int main() {
freopen("b.in", "r", stdin);
while (~scanf("%d %lld", &n, &p)) {
s.clear();
long long x;
for (int i = 0; i < n; i++) {
scanf("%lld", &x);
arr[i] = x;
s.insert(x);
}
long long ans = 0;
for (int i = 0; i < n; i++) {
long long now = arr[i];
set<long long>::iterator it = s.lower_bound(now);
s.erase(it);
it = s.lower_bound(p - now);
if (it != s.begin()) it--;
ans = max(ans, (now + *it) % p);
it = s.lower_bound(p + p - now);
if (it != s.begin()) it--;
ans = max(ans, (now + *it) % p);
s.insert(now);
}
cout << ans << endl;
}
return 0;
}
main()
{
int n,m,Q ; scanf("%d%d%d",&m,&n,&Q) ;
s1.insert(0) ; s1.insert(n) ;
s2.insert(0) ; s2.insert(m) ;
d1.insert(n) ; d2.insert(m) ;
while(Q--)
{
char s[6] ; int x ;
scanf("%s%d",s,&x) ;
if(s[0]=='H')
{
auto it=s1.lower_bound(x) ;
int x2=*it ; it-- ; int x1=*it ;
d1.erase(d1.find(x2-x1)) ;
d1.insert(x2-x) ;
d1.insert(x-x1) ;
s1.insert(x) ;
}
else
{
auto it=s2.lower_bound(x) ;
int x2=*it ; it-- ; int x1=*it ;
d2.erase(d2.find(x2-x1)) ;
d2.insert(x2-x) ;
d2.insert(x-x1) ;
s2.insert(x) ;
}
printf("%I64d\n",(LL)(*d1.begin())*(*d2.begin())) ;
}
}
int main() {
int idx, x;
while(~scanf("%d%d", &n, &m)) {
se.clear();
se2.clear();
mn = INF;
for(int i=1; i<=n; i++) {
scanf("%d", a+i);
se.insert(a[i]);
b[i] = a[i];
}
for(int i=2; i<=n; i++)
se2.insert(myabs(a[i]-a[i-1]));
for(multiset<int>::iterator it = se.begin(); ; ) {
multiset<int>::iterator it2 = it;
it++;
if(it == se.end())
break;
mn = min(mn, myabs((*it) - (*it2)));
}
//show_se();
//cout << "Min: " << mn << endl;
while(m--) {
scanf("%s", com);
if(com[0] == 'I') {
scanf("%d%d", &idx, &x);
multiset<int>::iterator it = se.lower_bound(x);
mn = min(mn, myabs((*it) - x));
if(it!=se.begin()) {
it--;
mn = min(mn, myabs(x - (*it)));
}
se.insert(x);
if(idx!=n) {
it = se2.lower_bound(myabs(b[idx] - a[idx+1]));
//se2.erase(myabs(b[i] - a[i+1]));
se2.erase(it);
se2.insert(myabs(x - a[idx+1]));
}
se2.insert(myabs(b[idx] - x));
b[idx] = x;
//show_se();
} else if(com[1] == 'i') {
printf("%d\n", mn);
} else {
multiset<int>::iterator it = se2.end();
it--;
printf("%d\b", *it);
}
}
}
return 0;
}
int main(){
#ifndef ONLINE_JUDGE
freopen("in","r",stdin);
#endif
scanf("%d",&n);
int maxScore=0,minScore=2*n;
For(i,n)scanf("%d",&a[i]);
For(i,n)scanf("%d",&b[i]);
sort(b+1,b+n+1);
For(i,n)st.insert(a[i]);
for(int i=n; i; i--){
it=st.upper_bound(b[i]);
if(it!=st.end()){
maxScore+=2;
st.erase(it);
mark[i]=1;
}
}
For(i,n)if(!mark[i]){
it=st.lower_bound(b[i]);
if(it!=st.end()){
maxScore++;
st.erase(it);
}
}
st.clear();
memset(mark,0,sizeof(mark));
sort(a+1,a+n+1);
For(i,n)st.insert(b[i]);
for(int i=n; i; i--){
it=st.upper_bound(a[i]);
if(it!=st.end()){
minScore-=2;
st.erase(it);
mark[i]=1;
}
}
For(i,n)if(!mark[i]){
it=st.lower_bound(a[i]);
if(it!=st.end()){
minScore--;
st.erase(it);
}
}
printf("%d %d\n",maxScore,minScore);
return 0;
}
void solve() {
int rez = 0;
multiset <int> :: iterator it;
for (int i = 1; i <= n; ++i) {
it = s.lower_bound(v[i].first);
if (it != s.end() && *it == v[i].first) {
s.erase(it);
s.insert(v[i].second);
++rez;
} else {
if (it == s.begin())
continue;
--it;
s.erase(it);
s.insert(v[i].second);
++rez;
}
}
printf("%d\n", rez);
}
int main(){
int t,n;
scanf("%d",&t);
while(t--){
scanf("%d",&n);
for(int i=0;i<n;i++){
int h,w;
scanf("%d%d",&h,&w);
v[i].get(h,w,0);
}
for(int i=0;i<n;i++){
int h,w;
scanf("%d%d",&h,&w);
v[i+n].get(h,w,1);
}
sort(v,v+2*n,cmp);
m.clear();
int ans=0;
for(int i=0;i<2*n;i++){
// cout<<v[i].id<<" "<<v[i].h<<" "<<v[i].w<<endl;
if(v[i].id==0) m.insert(v[i].w);
else{
it=m.lower_bound(v[i].w);
if(it!=m.end()){
m.erase(it);
ans++;
}
}
}
printf("%d\n",ans);
}
return 0;
}
int main() {
#ifdef HOME
freopen("input.txt", "r", stdin);
#endif
scanf("%d%d", &n, &k);
i64 s = 0;
forn(i, n) scanf("%d", &b[i]), s += b[i];
forn(i, n) scanf("%d", &a[i]);
sort(a, a+n);
f.insert(b, b+n);
ford(i, n) {
auto it = f.lower_bound(a[i]);
if (it == f.end()) {
if (k == 0) {
printf("NIE\n");
return 0;
}
add += a[i];
--k;
a[i] = 0;
} else {
a[i] = *it - a[i];
f.erase(it);
}
}
int main(int argc, char const *argv[])
{
scanf("%d", &n);
for (int i = 0; i < n; ++i) {
scanf("%I64d", A + i);
s += A[i];
ps[i + 1] = ps[i] + A[i];
}
sum.insert(s);
qu.insert(Pii(n, 0));
for (int i = 0, p; i < n; ++i) {
scanf("%d", &p); --p;
auto it = qu.upper_bound(Pii(p, 0));
// cout << it->second << " " << it->first << endl;
ll tmp = ps[it->first] - ps[it->second];
// cout << "tmp " << tmp << endl;
sum.erase(sum.lower_bound(tmp));
tmp = ps[p] - ps[it->second];
// cout << "tmp " << tmp << endl;
sum.insert(tmp); qu.insert(Pii(p, it->second));
tmp = ps[it->first] - ps[p + 1];
// cout << "tmp " << tmp << endl;
sum.insert(tmp); qu.insert(Pii(it->first, p + 1));
qu.erase(it);
printf("%I64d\n", *sum.rbegin());
}
return 0;
}
int main() {
scanf( "%d %d", &C, &G );
for ( i = 0; i < C + G; i++ ) {
scanf( "%d %d", &j, &k );
ls.push_back( make_pair( k, ( i < C ) ? -j : j ) );
}
sort( ls.rbegin(), ls.rend() );
for ( i = 0; i < C + G; i++ )
if ( ls[i].second > 0 )
S.insert( ls[i].second );
else { /* It's a cow */
set< int >::iterator it = S.lower_bound( -ls[i].second );
if ( it != S.end() ) {
sol += *it;
S.erase( it );
} else {
sol = -1;
break;
}
}
printf( "%lld\n", sol );
return 0;
}
int main()
{
int T;
scanf("%d",&T);
for(int kase=1; kase<=T; kase++)
{
st.clear();
int n;
scanf("%d",&n);
printf("Case #%d:\n",kase);
while(n--)
{
P t;
scanf("%d%d",&t.x,&t.y);
it=st.lower_bound(t);
if(it==st.begin()||(--it)->y>t.y)
{
//printf("OK");
st.insert(t);
it=st.upper_bound(t);
while(it!=st.end()&&it->y>=t.y)
{
//printf("%d %d\n",it->x,it->y);
st.erase(it++);
}
}
printf("%d\n",st.size());
}
if(kase!=T)
printf("\n");
}
return 0;
}
int main()
{
int n,d,r;
while(scanf("%d%d%d",&n,&d,&r)!=EOF&&n||d||r)
{
int k;
for(int i=1;i<=n;i++)
{
scanf("%d",&k);
s1.insert(k);
}
for(int i=1;i<=n;i++)
{
scanf("%d",&k);
s2.insert(k);
}
int ans=0;
for(int i=1;i<=n;i++)
{
int num=*s1.begin();
int index=d-num;
__typeof(s2.begin()) it=s2.lower_bound(index);
if(it==s2.end())it--;
ans+=r*max(0,num+*it-d);
s1.erase(s1.begin());
s2.erase(it);
}
printf("%d\n",ans);
}
return 0;
}
int main() {
int n, m, p, b; scanf("%d%d", &n, &m);
for (int i = 0; i < n; ++i) {
scanf("%d%lld", &A[i].x, &A[i].t);
++A[i].t;
A[i].idx = i;
}
sort(A, A + n, [&] (Frog A, Frog B) {return A.x > B.x;});
for (int i = 0; i < n; ++i) root -> set(A[i].x, min(A[i].x + A[i].t, (LL)INF), i);
while (m--) {
scanf("%d%d", &p, &b);
int frog = root -> at(p);
if (frog == -1) mos.insert({p, b});
else {
A[frog].t += b;
++A[frog].mos_count;
auto it = mos.lower_bound({A[frog].x, 0});
while (it != mos.end() and it -> first < A[frog].x + A[frog].t) {
A[frog].t += it-> second;
++A[frog].mos_count;
mos.erase(it);
it = mos.upper_bound({A[frog].x, 0});
}
root -> set(A[frog].x, min(A[frog].x + A[frog].t,(LL) INF), frog);
}
}
sort(A, A + n, [&] (Frog A, Frog B) {return A.idx < B.idx;});
for (int i = 0; i < n; ++i) printf("%d %lld\n", A[i].mos_count, A[i].t - 1);
}
void solve(int idx)
{
if(flag)
puts("");
flag=1;
scanf("%d",&N);
printf("Case #%d:\n", idx);
Ms.clear();
while(N--)
{
int L,R;
scanf("%d %d",&L,&R);
Point tmp;
tmp.L=L;tmp.R=R;
it=Ms.lower_bound(tmp);
if(it==Ms.begin()||(--it)->R>R)
{
Ms.insert(tmp);
it=Ms.upper_bound(tmp);
while(it!=Ms.end()&&it->R>=tmp.R)
{
Ms.erase(it++);
}
}
printf("%d\n",Ms.size());
}
}
int main() {
#ifndef ONLINE_JUDGE
freopen("528a.in", "r", stdin);
freopen("528a.out", "w", stdout);
#endif
cin >> w >> h >> n;
rx.insert(0);
rx.insert(w);
ry.insert(0);
ry.insert(h);
distx.insert(-w);
disty.insert(-h);
for(int i = 1 ; i <= n ; ++ i) {
char op; int x;
cin >> op >> x;
if(op == 'V') {
auto p1 = rx.lower_bound(x);
auto p2 = rx.lower_bound(x);
if(p1 != rx.begin())
-- p1;
// cout << "x \n";
// cout << *p1 << ' ' << *p2 << '\n';
rx.insert(x);
distx.erase(distx.find(-(*p2 - *p1)));
distx.insert(-(x - *p1));
distx.insert(-(*p2 - x));
cout << 1LL * (*distx.begin()) * (*disty.begin()) << '\n';
}
else {
auto p1 = ry.lower_bound(x);
auto p2 = ry.lower_bound(x);
if(p1 != ry.begin())
-- p1;
// cout << "y \n";
// cout << *p1 << ' ' << *p2 << '\n';
ry.insert(x);
disty.erase(disty.find(-(*p2 - *p1)));
disty.insert(-(x - *p1));
disty.insert(-(*p2 - x));
cout << 1LL * (*distx.begin()) * (*disty.begin()) << '\n';
}
}
}
int main()
{
//freopen("I.in","r",stdin);
//freopen("I.out","w",stdout);
int T;
scanf("%d", &T);
for(int cas=1;cas<=T;cas++)
{
mst.clear();
int n, m, k, cnt = 0;
long long num;
scanf("%d%d%d", &n, &m, &k);
for(int i = 0; i < n; ++i)
{
scanf("%lld", &num);
if(num <= k)
{
mst.insert(num);
}
}
while(true)
{
int sz = mst.size();
if(sz < 2)
break;
it1 = mst.end();
it1--;
long long fst = *it1;
mst.erase(it1);
it2 = mst.lower_bound(min(fst, k - fst));
if(it2 == mst.end())
it2--;
if(it2 == mst.begin() && *it2 > (k - fst))
continue;
if(*it2 <= k - fst)
{
ans[cnt++] = fst * ( *it2);
mst.erase(it2);
}
else
{
it2 --;
ans[cnt++] = fst * (*it2);
mst.erase(it2);
}
}
sort(ans, ans + cnt, cmp);
long long res = 0;
for(int i = 0; i < min(m, cnt); ++i)
{
res += ans[i];
}
printf("CASE #%d: %lld\n",cas,res);
}
return 0;
}
inline void modify(int u) {
col[u] ^= true;
sum += col[u] ? -1 : 1;
while(u) {
d[u] = getD(u);
if(!col[u]) d[u] = make_pair(max(0, d[u].first), max(0, d[u].second));
int val = tree[root[pathR[u]]].opt;ans.erase(ans.lower_bound(-val));
modify(root[pathR[u]], pos[pathR[u]], pos[pathR[u]]+csz[pathR[u]]-1, u);
adjust(pathR[u]), ans.insert(-tree[root[pathR[u]]].opt), u = fa[pathR[u]];
}
}
void erase_interval(int x, int y){
x = *(apples.lower_bound(x));
multiset<int>::iterator it = apples.upper_bound(x);
vector<int> res;
while(y && it != apples.end()){
if(*it > x + b)break;
add_apple(max(*it - b, 0), *it, root, -1);
res.push_back(*it);
apples.erase(it++);
y--;
}
it = apples.lower_bound(x);
while(y--){
add_apple(max(*it - b, 0), *it, root, -1);
cout << *it << ' ';
apples.erase(it++);
}
vector<int>::iterator vit = res.begin();
while(vit != res.end())
cout << *vit++ << ' ';
cout << endl;
}
int two_array(multiset<int> &a, multiset<int> &b, int k)
{
for(int i : a)
{
multiset<int>::iterator it = b.lower_bound(k-i);
if(it == b.end())
return 0;
b.erase(it);
}
return 1;
}
int main(){
// freopen("input.txt","r",stdin);
int T,n,v;
scanf("%d",&T);
while(T--){
scanf("%d",&n);
mys.clear();
for(int i=0; i<n; ++i){
scanf("%d",&v);
multiset<int>::iterator it = mys.lower_bound(v+1);
if(it!=mys.end()) mys.erase(it);
mys.insert(v);
}
printf("%d",sz(mys));
for(multiset<int>::iterator it=mys.begin(); it!=mys.end(); ++it) printf(" %d",*it);
puts("");
}
}
int main()
{
#ifdef fn
freopen(fn ".in", "r", stdin);
freopen(fn ".out", "w", stdout);
#endif
scanf("%d", &n);
for (int i = 1; i <= n; i++) {
scanf("%d", &x);
se.insert(x);
}
for (int i = 1; i <= n + 1; i++) {
auto it = se.lower_bound(i);
if (it == se.end()) {
printf("%d ", i);
return 0;
}
se.erase(it);
}
}
int main()
{
scanf("%d",&T);
multiset<int>::iterator iter;
int tmph,tmpw;
int sum;
while(T--)
{
scanf("%d",&N);
myMs.clear();
sum=0;
for(int i=0;i<N;++i)
{
scanf("%d%d",&tmph,&tmpw);
cs[i].setValue(tmph,tmpw,P_A);
}
for(int i=0;i<N;++i)
{
scanf("%d%d",&tmph,&tmpw);
cs[i+N].setValue(tmph,tmpw,P_B);
}
sort(cs,cs+N+N,comp);
for(int i=0;i<N+N;++i)
{
if(cs[i].b==P_A)
myMs.insert(cs[i].w);
else
{
iter=myMs.lower_bound(cs[i].w);
if(iter!=myMs.end())
{
++sum;
myMs.erase(iter);
}
}
}
printf("%d\n",sum);
}
return 0;
}
void change(int x){
int t;
typeof(S.begin()) it;
if(col[x])er(S,mp(x,0));else S.insert(mp(x,0));
for(col[x]^=1;x;x=jump[x]){
n=bel[x];
if(jump[x]&&!S.empty()){
it=S.find(mp(jump[x],Gm(D1,sl[n],sl[n+1]-1)-sl[n]+1));
if(it!=S.end())S.erase(it);
}
if(!S.empty()){
it=S.lower_bound(mp(x,-INF));
t=(it!=S.end()&&it->first==x)?it->second:INF;
}else t=INF;
D0[pos[x]+tn-1]=t-pos[x],D1[pos[x]+tn-1]=t+pos[x];
for(t=(pos[x]+tn-1)>>1;t;t>>=1)
D0[t]=max(D0[L(t)],D0[R(t)]),D1[t]=max(D1[L(t)],D1[R(t)]);
if(jump[x])
S.insert(mp(jump[x],Gm(D1,sl[n],sl[n+1]-1)-sl[n]+1));
}
}
int main()
{
ifstream in("planificare.in");
ofstream out("planificare.out");
in >> N >> K;
for ( int i = 1; i <= N; ++i )
in >> v[i].x >> v[i].y;
sort(v + 1, v + N + 1);
for ( int i = 1; i <= K; ++i )
MS.insert(0);
for ( int i = 1; i <= N; ++i )
{
auto it = MS.lower_bound(v[i].x);
if ( it != MS.end() && *it == v[i].x )
{
sol++;
MS.erase(it);
MS.insert(v[i].y);
continue;
}
if ( it == MS.begin() )
continue;
it--;
sol++;
MS.erase(it);
MS.insert(v[i].y);
}
out << sol << "\n";
return 0;
}
void putsegment(const int id, const vector<seg> &a)
{
pdd tmpp;
set<seg>::iterator
nxt = s.lower_bound (a[id]),
prv = prev (nxt);
if (nxt != s.end() && abs(nxt->theta-a[id].theta) > EPS)
{
tmpp = inspoint(*nxt, a[id]);
//debug("pushing3", nxt->id, id, tmpp.first, nxt->p.x, nxt->q.x);
if(inrange(*nxt, a[id], tmpp.first) && tmpp.first > cur_x+EPS)
e.push(event(tmpp.first, tmpp.second, 0, nxt->id, id));
}
if (prv != s.end() && abs(prv->theta-a[id].theta) > EPS)
{
tmpp = inspoint(*prv, a[id]);
//debug("pushing2", id, prv->id, tmpp.first, prv->p.x, prv->q.x);
if(inrange(*prv, a[id], tmpp.first) && tmpp.first > cur_x+EPS)
e.push(event(tmpp.first, tmpp.second, 0, prv->id, id));
}
//debug("pushin", id);
where[id] = s.insert (nxt, a[id]);
}
int main()
{
lg i,s1[99],s2[99],j,x,sm,cn,y;
scanf("%lld%lld%lld",&n,&a,&b);
n1=n/2;//pahle array ko hi likh lelete hai n1 pahle array me members ki count hai
n2=n-n1;
for(i=0;i<n1;i++)
scanf("%lld",&s1[i]);
for(i=0;i<n2;i++)
scanf("%lld",&s2[i]);//chalo dusra aarya inputees
//For first array
//chalo cool hai
x1=pow(2,n1);
for(i=0;i<x1;i++)
{
sm=0;
for(j=0;j<n1;j++)
if((i&(1<<j))>0)
sm+=s1[j];
os.insert(sm);
}
/*cout<<"Printtign first array\n";
for(i=0;i<x1;i++)
cout<<a1[i]<<" ";
cout<<endl;
*///pahla arra complete
//for second array
x2=pow(2,n2);
sm=0;
for(i=0;i<x2;i++)
{
sm=0;
for(j=0;j<n2;j++)//bhai second array n1 se suru hokar n tak jaega
if((i&(1<<j))>0)
sm+=s2[j];
ts.insert(sm);
}
//chalo dusra bhi insert hoke stored ho gae
cn=0;
p=os.begin();
for(i=0;i<x1;i++)
{
y=*p;
p++;
lb=ts.lower_bound(a-y);
up=ts.upper_bound(b-y);
up--;
if( lb!=os.end() && up!=os.end() )
{
pi=up;
pi++;
while(lb!=pi)
{lb++;cn++;}
}
else if(lb==os.end() && up!=os.end() )
{
while(up!=os.begin() )
{up--;cn++;}
cn++;//bcz ek valye chhut rahi hai
}
else if(lb!=os.end() && up==os.end() )
{
while(lb!=os.end() )
{lb++;cn++;}
}
}
printf("%lld\n",cn);
return 0;
}
/** Return the number of hits in the past 5 minutes.
@param timestamp - The current timestamp (in seconds granularity). */
int getHits(int timestamp) {
auto begin = ss.lower_bound(timestamp-300+1>0? timestamp-300+1:0);
auto end = ss.upper_bound(timestamp);
return distance(begin, end);
}
int main () {
scanf(" %d %d %d", &n, &s, &t);
for (int i = 0; i < n; i++) {
scanf(" %d", &v[i]);
st.insert(v[i]);
}
ll _min = inf, _max = 0, aver = 0;
for (auto i = st.begin(); i != st.end(); i++) {
int from = *i;
for (int j = 0; j < n; j++)
ms.insert(v[j]);
int cur = from;
ll cont = 0;
while (!ms.empty()) {
if (ms.find(cur) != ms.end()) {
ms.erase(ms.find(cur));
cur = (cur + t) % s;
cont += ll(t);
} else {
auto it = ms.lower_bound(cur);
if (it == ms.end())
it = ms.begin();
int nx = *it;
if (nx > cur)
cont += ll(nx - cur);
else
cont += ll(s - cur + nx);
cur = nx;
}
}
cost[from] = cont;
_min = min(_min, cont);
_max = max(_max, cont);
aver += cont;
}
for (int i = 0; i < n; i++)
ms.insert(v[i]);
for (int i = 0; i < s; i++) {
if (ms.find(i) != ms.end())
continue;
auto it = ms.lower_bound(i);
if (it == ms.end())
it = ms.begin();
int nx = *it;
ll cont = 0;
if (nx > i)
cont = ll(nx - i + cost[nx]);
else
cont = ll(s - i + nx + cost[nx]);
_min = min(_min, cont);
_max = max(_max, cont);
aver += cont;
}
ll d = gcd(aver, s);
printf("%lld %lld %lld/%lld\n", _min, _max, aver / d, s / d);
}
int main(){
powB[0] = powB2[0] = 1;
for(int i = 1;i < MAXL;++i){
powB[i] = B * powB[i - 1];
powB2[i] = B * powB2[i - 1] % MOD;
}
int T,L;
scanf("%d",&T);
while(T--){
scanf("%s",s);
L = strlen(s);
H[L] = H3[L] = 0;
for(int i = L - 1;i >= 0;--i){
H[i] = ((s[i] >= 'a' && s[i] <= 'z')? s[i] - 'a' : s[i] - 'A' + 26) + B * H[i + 1];
H3[i] = (((s[i] >= 'a' && s[i] <= 'z')? s[i] - 'a' : s[i] - 'A' + 26) + B * H3[i + 1]) % MOD;
}
H2[0] = H4[0] = 0;
for(int i = 0;i < L;++i){
H2[i + 1] = ((s[i] >= 'a' && s[i] <= 'z')? s[i] - 'a' : s[i] - 'A' + 26) + B * H2[i];
H4[i + 1] = (((s[i] >= 'a' && s[i] <= 'z')? s[i] - 'a' : s[i] - 'A' + 26) + B * H4[i]) % MOD;
}
for(int i = 0;i < L;++i){
int lo = 0,hi = min(i + 1,L - i - 1),mi;
while(lo < hi){
mi = (lo + hi + 1) >> 1;
if(get_hash3(i - mi + 1,i) != get_hash4(i + 1,i + mi)) hi = mi - 1;
else lo = mi;
}
r[i] = lo;
}
int Q = 0;
vq.clear();
in.clear();
out.clear();
for(int i = 0;i < L;++i){
if(r[i]){
int r2 = r[i] / 2;
vq.push_back(make_pair(i,i + 1 - r2));
in.push_back(make_pair(i + 1,i));
out.push_back(make_pair(i + r[i] + 1,i));
++Q;
}
}
sort(vq.begin(),vq.end());
sort(in.begin(),in.end());
sort(out.begin(),out.end());
S.clear();
int ans = 0;
for(int i = 0,p1 = 0,p2 = 0,p3 = 0;i < L;++i){
while(p3 < Q && out[p3].first == i){
it = S.find(out[p3].first - r[ out[p3].second ]);
S.erase(it);
++p3;
}
while(p2 < Q && in[p2].first == i){
S.insert(in[p2].first);
++p2;
}
while(p1 < Q && vq[p1].first == i){
it = S.lower_bound( vq[p1].second );
if(it != S.end()) ans = max(ans,i - *it + 1);
++p1;
}
}
printf("%d\n",ans * 4);
}
return 0;
}