int main()
{
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
typedef std::multiset<DefaultOnly> M;
typedef M::iterator R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace_hint(m.cend());
assert(r == m.begin());
assert(m.size() == 1);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace_hint(m.cbegin());
assert(r == m.begin());
assert(m.size() == 2);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 2);
}
assert(DefaultOnly::count == 0);
{
typedef std::multiset<Emplaceable> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend());
assert(r == m.begin());
assert(m.size() == 1);
assert(*m.begin() == Emplaceable());
r = m.emplace_hint(m.cend(), 2, 3.5);
assert(r == next(m.begin()));
assert(m.size() == 2);
assert(*r == Emplaceable(2, 3.5));
r = m.emplace_hint(m.cbegin(), 2, 3.5);
assert(r == next(m.begin()));
assert(m.size() == 3);
assert(*r == Emplaceable(2, 3.5));
}
{
typedef std::multiset<int> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), M::value_type(2));
assert(r == m.begin());
assert(m.size() == 1);
assert(*r == 2);
}
#if __cplusplus >= 201103L
{
typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), M::value_type(2));
assert(r == m.begin());
assert(m.size() == 1);
assert(*r == 2);
}
#endif
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
}
int main(int, char**)
{
{
typedef std::set<DefaultOnly> M;
typedef M::iterator R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace_hint(m.cend());
assert(r == m.begin());
assert(m.size() == 1);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace_hint(m.cbegin());
assert(r == m.begin());
assert(m.size() == 1);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 1);
}
assert(DefaultOnly::count == 0);
{
typedef std::set<Emplaceable> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend());
assert(r == m.begin());
assert(m.size() == 1);
assert(*m.begin() == Emplaceable());
r = m.emplace_hint(m.cend(), 2, 3.5);
assert(r == next(m.begin()));
assert(m.size() == 2);
assert(*r == Emplaceable(2, 3.5));
r = m.emplace_hint(m.cbegin(), 2, 3.5);
assert(r == next(m.begin()));
assert(m.size() == 2);
assert(*r == Emplaceable(2, 3.5));
}
{
typedef std::set<int> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), M::value_type(2));
assert(r == m.begin());
assert(m.size() == 1);
assert(*r == 2);
}
{
typedef std::set<int, std::less<int>, min_allocator<int>> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), M::value_type(2));
assert(r == m.begin());
assert(m.size() == 1);
assert(*r == 2);
}
return 0;
}
int main()
{
{
std::tuple<> t(std::allocator_arg, A1<int>());
}
{
std::tuple<int> t(std::allocator_arg, A1<int>());
assert(std::get<0>(t) == 0);
}
{
std::tuple<DefaultOnly> t(std::allocator_arg, A1<int>());
assert(std::get<0>(t) == DefaultOnly());
}
{
assert(!alloc_first::allocator_constructed);
std::tuple<alloc_first> t(std::allocator_arg, A1<int>(5));
assert(alloc_first::allocator_constructed);
assert(std::get<0>(t) == alloc_first());
}
{
assert(!alloc_last::allocator_constructed);
std::tuple<alloc_last> t(std::allocator_arg, A1<int>(5));
assert(alloc_last::allocator_constructed);
assert(std::get<0>(t) == alloc_last());
}
{
alloc_first::allocator_constructed = false;
std::tuple<DefaultOnly, alloc_first> t(std::allocator_arg, A1<int>(5));
assert(std::get<0>(t) == DefaultOnly());
assert(alloc_first::allocator_constructed);
assert(std::get<1>(t) == alloc_first());
}
{
alloc_first::allocator_constructed = false;
alloc_last::allocator_constructed = false;
std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
A1<int>(5));
assert(std::get<0>(t) == DefaultOnly());
assert(alloc_first::allocator_constructed);
assert(std::get<1>(t) == alloc_first());
assert(alloc_last::allocator_constructed);
assert(std::get<2>(t) == alloc_last());
}
{
alloc_first::allocator_constructed = false;
alloc_last::allocator_constructed = false;
std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
A2<int>(5));
assert(std::get<0>(t) == DefaultOnly());
assert(!alloc_first::allocator_constructed);
assert(std::get<1>(t) == alloc_first());
assert(!alloc_last::allocator_constructed);
assert(std::get<2>(t) == alloc_last());
}
}
int main()
{
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
typedef std::set<DefaultOnly> M;
typedef std::pair<M::iterator, bool> R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace();
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace();
assert(!r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 1);
}
assert(DefaultOnly::count == 0);
{
typedef std::set<Emplaceable> M;
typedef std::pair<M::iterator, bool> R;
M m;
R r = m.emplace();
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*m.begin() == Emplaceable());
r = m.emplace(2, 3.5);
assert(r.second);
assert(r.first == next(m.begin()));
assert(m.size() == 2);
assert(*r.first == Emplaceable(2, 3.5));
r = m.emplace(2, 3.5);
assert(!r.second);
assert(r.first == next(m.begin()));
assert(m.size() == 2);
assert(*r.first == Emplaceable(2, 3.5));
}
{
typedef std::set<int> M;
typedef std::pair<M::iterator, bool> R;
M m;
R r = m.emplace(M::value_type(2));
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*r.first == 2);
}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
}
int main()
{
{
std::tuple<> t;
}
{
std::tuple<int> t;
assert(std::get<0>(t) == 0);
}
{
std::tuple<int, char*> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
}
{
std::tuple<int, char*, std::string> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
assert(std::get<2>(t) == "");
}
{
std::tuple<int, char*, std::string, DefaultOnly> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
assert(std::get<2>(t) == "");
assert(std::get<3>(t) == DefaultOnly());
}
}
int main()
{
{
std::tuple<> t;
}
{
std::tuple<int> t;
assert(std::get<0>(t) == 0);
}
{
std::tuple<int, char*> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
}
{
std::tuple<int, char*, std::string> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
assert(std::get<2>(t) == "");
}
{
std::tuple<int, char*, std::string, DefaultOnly> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
assert(std::get<2>(t) == "");
assert(std::get<3>(t) == DefaultOnly());
}
#ifndef _LIBCPP_HAS_NO_CONSTEXPR
{
constexpr std::tuple<> t;
}
{
constexpr std::tuple<int> t;
assert(std::get<0>(t) == 0);
}
{
constexpr std::tuple<int, char*> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
}
#endif
}
int main(int, char**)
{
{
std::tuple<> t;
(void)t;
}
{
std::tuple<int> t;
assert(std::get<0>(t) == 0);
}
{
std::tuple<int, char*> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
}
{
std::tuple<int, char*, std::string> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
assert(std::get<2>(t) == "");
}
{
std::tuple<int, char*, std::string, DefaultOnly> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
assert(std::get<2>(t) == "");
assert(std::get<3>(t) == DefaultOnly());
}
{
// See bug #21157.
static_assert(!std::is_default_constructible<std::tuple<NoDefault>>(), "");
static_assert(!std::is_default_constructible<std::tuple<DefaultOnly, NoDefault>>(), "");
static_assert(!std::is_default_constructible<std::tuple<NoDefault, DefaultOnly, NoDefault>>(), "");
}
{
static_assert(noexcept(std::tuple<NoExceptDefault>()), "");
static_assert(noexcept(std::tuple<NoExceptDefault, NoExceptDefault>()), "");
static_assert(!noexcept(std::tuple<ThrowingDefault, NoExceptDefault>()), "");
static_assert(!noexcept(std::tuple<NoExceptDefault, ThrowingDefault>()), "");
static_assert(!noexcept(std::tuple<ThrowingDefault, ThrowingDefault>()), "");
}
{
constexpr std::tuple<> t;
(void)t;
}
{
constexpr std::tuple<int> t;
assert(std::get<0>(t) == 0);
}
{
constexpr std::tuple<int, char*> t;
assert(std::get<0>(t) == 0);
assert(std::get<1>(t) == nullptr);
}
{
// Check that the SFINAE on the default constructor is not evaluated when
// it isn't needed. If the default constructor is evaluated then this test
// should fail to compile.
IllFormedDefault v(0);
std::tuple<IllFormedDefault> t(v);
}
return 0;
}
int main()
{
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
{
typedef std::multimap<int, DefaultOnly> M;
typedef M::iterator R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace();
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 0);
assert(m.begin()->second == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin()));
assert(m.size() == 2);
assert(next(m.begin())->first == 1);
assert(next(m.begin())->second == DefaultOnly());
assert(DefaultOnly::count == 2);
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin(), 2));
assert(m.size() == 3);
assert(next(m.begin(), 2)->first == 1);
assert(next(m.begin(), 2)->second == DefaultOnly());
assert(DefaultOnly::count == 3);
}
assert(DefaultOnly::count == 0);
{
typedef std::multimap<int, Emplaceable> M;
typedef M::iterator R;
M m;
R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2),
std::forward_as_tuple());
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == Emplaceable());
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple(2, 3.5));
assert(r == m.begin());
assert(m.size() == 2);
assert(m.begin()->first == 1);
assert(m.begin()->second == Emplaceable(2, 3.5));
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple(3, 3.5));
assert(r == next(m.begin()));
assert(m.size() == 3);
assert(r->first == 1);
assert(r->second == Emplaceable(3, 3.5));
}
{
typedef std::multimap<int, double> M;
typedef M::iterator R;
M m;
R r = m.emplace(M::value_type(2, 3.5));
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == 3.5);
}
#if __cplusplus >= 201103L || defined(_LIBCPP_MSVC)
{
typedef std::multimap<int, DefaultOnly, std::less<int>, min_allocator<std::pair<const int, DefaultOnly>>> M;
typedef M::iterator R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace();
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 0);
assert(m.begin()->second == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin()));
assert(m.size() == 2);
assert(next(m.begin())->first == 1);
assert(next(m.begin())->second == DefaultOnly());
assert(DefaultOnly::count == 2);
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin(), 2));
assert(m.size() == 3);
assert(next(m.begin(), 2)->first == 1);
assert(next(m.begin(), 2)->second == DefaultOnly());
assert(DefaultOnly::count == 3);
}
assert(DefaultOnly::count == 0);
{
typedef std::multimap<int, Emplaceable, std::less<int>, min_allocator<std::pair<const int, Emplaceable>>> M;
typedef M::iterator R;
M m;
R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2),
std::forward_as_tuple());
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == Emplaceable());
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple(2, 3.5));
assert(r == m.begin());
assert(m.size() == 2);
assert(m.begin()->first == 1);
assert(m.begin()->second == Emplaceable(2, 3.5));
r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
std::forward_as_tuple(3, 3.5));
assert(r == next(m.begin()));
assert(m.size() == 3);
assert(r->first == 1);
assert(r->second == Emplaceable(3, 3.5));
}
{
typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
typedef M::iterator R;
M m;
R r = m.emplace(M::value_type(2, 3.5));
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == 3.5);
}
#endif
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
}
int main()
{
{
typedef std::multimap<int, DefaultOnly> M;
typedef M::iterator R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace_hint(m.cend());
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 0);
assert(m.begin()->second == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace_hint(m.cend(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin()));
assert(m.size() == 2);
assert(next(m.begin())->first == 1);
assert(next(m.begin())->second == DefaultOnly());
assert(DefaultOnly::count == 2);
r = m.emplace_hint(m.cend(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin(), 2));
assert(m.size() == 3);
assert(next(m.begin(), 2)->first == 1);
assert(next(m.begin(), 2)->second == DefaultOnly());
assert(DefaultOnly::count == 3);
}
assert(DefaultOnly::count == 0);
{
typedef std::multimap<int, Emplaceable> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), std::piecewise_construct,
std::forward_as_tuple(2),
std::forward_as_tuple());
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == Emplaceable());
r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple(2, 3.5));
assert(r == m.begin());
assert(m.size() == 2);
assert(m.begin()->first == 1);
assert(m.begin()->second == Emplaceable(2, 3.5));
r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple(3, 3.5));
assert(r == m.begin());
assert(m.size() == 3);
assert(r->first == 1);
assert(r->second == Emplaceable(3, 3.5));
}
{
typedef std::multimap<int, double> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), M::value_type(2, 3.5));
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == 3.5);
}
{
typedef std::multimap<int, DefaultOnly, std::less<int>, min_allocator<std::pair<const int, DefaultOnly>>> M;
typedef M::iterator R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace_hint(m.cend());
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 0);
assert(m.begin()->second == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace_hint(m.cend(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin()));
assert(m.size() == 2);
assert(next(m.begin())->first == 1);
assert(next(m.begin())->second == DefaultOnly());
assert(DefaultOnly::count == 2);
r = m.emplace_hint(m.cend(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple());
assert(r == next(m.begin(), 2));
assert(m.size() == 3);
assert(next(m.begin(), 2)->first == 1);
assert(next(m.begin(), 2)->second == DefaultOnly());
assert(DefaultOnly::count == 3);
}
assert(DefaultOnly::count == 0);
{
typedef std::multimap<int, Emplaceable, std::less<int>, min_allocator<std::pair<const int, Emplaceable>>> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), std::piecewise_construct,
std::forward_as_tuple(2),
std::forward_as_tuple());
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == Emplaceable());
r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple(2, 3.5));
assert(r == m.begin());
assert(m.size() == 2);
assert(m.begin()->first == 1);
assert(m.begin()->second == Emplaceable(2, 3.5));
r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
std::forward_as_tuple(1),
std::forward_as_tuple(3, 3.5));
assert(r == m.begin());
assert(m.size() == 3);
assert(r->first == 1);
assert(r->second == Emplaceable(3, 3.5));
}
{
typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
typedef M::iterator R;
M m;
R r = m.emplace_hint(m.cend(), M::value_type(2, 3.5));
assert(r == m.begin());
assert(m.size() == 1);
assert(m.begin()->first == 2);
assert(m.begin()->second == 3.5);
}
}
int main()
{
{
std::tuple<> t(std::allocator_arg, A1<int>());
}
{
std::tuple<int> t(std::allocator_arg, A1<int>());
assert(std::get<0>(t) == 0);
}
{
std::tuple<DefaultOnly> t(std::allocator_arg, A1<int>());
assert(std::get<0>(t) == DefaultOnly());
}
{
assert(!alloc_first::allocator_constructed);
std::tuple<alloc_first> t(std::allocator_arg, A1<int>(5));
assert(alloc_first::allocator_constructed);
assert(std::get<0>(t) == alloc_first());
}
{
assert(!alloc_last::allocator_constructed);
std::tuple<alloc_last> t(std::allocator_arg, A1<int>(5));
assert(alloc_last::allocator_constructed);
assert(std::get<0>(t) == alloc_last());
}
{
alloc_first::allocator_constructed = false;
std::tuple<DefaultOnly, alloc_first> t(std::allocator_arg, A1<int>(5));
assert(std::get<0>(t) == DefaultOnly());
assert(alloc_first::allocator_constructed);
assert(std::get<1>(t) == alloc_first());
}
{
alloc_first::allocator_constructed = false;
alloc_last::allocator_constructed = false;
std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
A1<int>(5));
assert(std::get<0>(t) == DefaultOnly());
assert(alloc_first::allocator_constructed);
assert(std::get<1>(t) == alloc_first());
assert(alloc_last::allocator_constructed);
assert(std::get<2>(t) == alloc_last());
}
{
alloc_first::allocator_constructed = false;
alloc_last::allocator_constructed = false;
std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
A2<int>(5));
assert(std::get<0>(t) == DefaultOnly());
assert(!alloc_first::allocator_constructed);
assert(std::get<1>(t) == alloc_first());
assert(!alloc_last::allocator_constructed);
assert(std::get<2>(t) == alloc_last());
}
{
// Test that the uses-allocator default constructor does not evaluate
// its SFINAE when it otherwise shouldn't be selected. Do this by
// using 'NonDefaultConstructible' which will cause a compile error
// if std::is_default_constructible is evaluated on it.
using T = NonDefaultConstructible<>;
T v(42);
std::tuple<T, T> t(v, v);
(void)t;
std::tuple<T, T> t2(42, 42);
(void)t2;
}
}
int main(int, char**)
{
{
typedef std::set<DefaultOnly> M;
typedef std::pair<M::iterator, bool> R;
M m;
assert(DefaultOnly::count == 0);
R r = m.emplace();
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 1);
r = m.emplace();
assert(!r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*m.begin() == DefaultOnly());
assert(DefaultOnly::count == 1);
}
assert(DefaultOnly::count == 0);
{
typedef std::set<Emplaceable> M;
typedef std::pair<M::iterator, bool> R;
M m;
R r = m.emplace();
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*m.begin() == Emplaceable());
r = m.emplace(2, 3.5);
assert(r.second);
assert(r.first == next(m.begin()));
assert(m.size() == 2);
assert(*r.first == Emplaceable(2, 3.5));
r = m.emplace(2, 3.5);
assert(!r.second);
assert(r.first == next(m.begin()));
assert(m.size() == 2);
assert(*r.first == Emplaceable(2, 3.5));
}
{
typedef std::set<int> M;
typedef std::pair<M::iterator, bool> R;
M m;
R r = m.emplace(M::value_type(2));
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*r.first == 2);
}
{
typedef std::set<int, std::less<int>, min_allocator<int>> M;
typedef std::pair<M::iterator, bool> R;
M m;
R r = m.emplace(M::value_type(2));
assert(r.second);
assert(r.first == m.begin());
assert(m.size() == 1);
assert(*r.first == 2);
}
return 0;
}
