double kth(vector<int>& nums1, int l1,
vector<int>& nums2, int l2, int n)
// n: Median position (zero-based index)
{
if (l1 >= nums1.size())return nums2[l2 + n];
if (l2 >= nums2.size())return nums1[l1 + n];
if (0 == n)return nums1[l1] < nums2[l2] ? nums1[l1] : nums2[l2];
if (1 == n)
{
if (nums1[l1] < nums2[l2]) l1++;
else l2++;
n--;
return kth(nums1, l1, nums2, l2, n);
}
int anchor1 = l1 + n / 2 < nums1.size() ? l1 + n / 2 : nums1.size();
int anchor2 = l2 + n / 2 < nums2.size() ? l2 + n / 2 : nums2.size();
if (nums1[anchor1-1] < nums2[anchor2-1])
{
n -= anchor1 - l1;
l1 = anchor1;
}
else
{
n -= anchor2 - l2;
l2 = anchor2;
}
return kth(nums1, l1, nums2, l2, n);
}
double findMedianSortedArrays(vector<int>& nums1, vector<int>& nums2) {
bool odd = (nums1.size() + nums2.size()) % 2;
int mid = (nums1.size() + nums2.size() - 1) / 2;
if (odd)return kth(nums1, 0, nums2, 0, mid);
else return (kth(nums1, 0, nums2, 0, mid) +
kth(nums1, 0, nums2, 0, mid + 1)) / 2.0;
}
int kth(node *t,int k) {
if(k<=t->l->size())
return kth(t->l,k) ;
else if(k>t->l->size()+1)
return kth(t->r,k-t->l->size()-1) ;
return t->v ;
}
int kth(Treap *&p, int k)
{
int Lsize = p -> left -> size;
if(k <= Lsize) return kth(p -> left, k);
else if(k == Lsize + 1) return p -> key;
else return kth(p -> right, k - Lsize - 1);
}
int kth(TreeNode *node, int &cur, int k) {
if (!node) return 0;
int val = kth(node->left, cur, k);
if (cur == k) return val;
cur++;
if (cur == k) return node->val;
return kth(node->right, cur, k);
}
double findMedianSortedArrays(int a[], int m, int b[], int n) {
int k = (m+n)/2;
int m1 = kth(a,m,b,n,k+1);
if ((m+n)%2==0) {
int m2 = kth(a,m,b,n,k);
return ((double)m1+m2)/2.0;
}
return m1;
}
int kth(int a[], int m, int b[], int n, int k) {
if (m < n) return kth(b,n,a,m,k);
if (n==0) return a[k-1];
if (k==1) return min(a[0],b[0]);
int j = min(n,k/2);
int i = k-j;
if (a[i-1] > b[j-1]) return kth(a,i,b+j,n-j,k-j);
return kth(a+i,m-i,b,j,k-i);
}
Node * kth(Node* root, int k) {
int leftsize = 0;
if (root->left != NULL)
leftsize = root->left->size;
if (k <= leftsize)
return kth(root->left, k);
if (k == leftsize + 1)
return root;
return kth(root->right, k - leftsize - 1);
}
int kth(Node* o,int k) { // ÕÒµ½µÚK´óµÄÔªËØ
if(o == NULL || k <= 0 || k > o->s)
return 0;
int s = (o->ch[1] == NULL ? 0 : o->ch[1]->s);
if(k == s+1)
return o->v;
else if(k <= s)
return kth(o->ch[1],k);
else
return kth(o->ch[0],k-s-1);
}
int kth(int s, int e, int k) {
int rn = s + rand() % (e - s), f, i;
swap(a + rn, a + s);
for(i = s + 1, f = s + 1; i < e; i++) {
if(a[i] < a[s]) {
swap(a + f, a + i);
f++;
}
}
f--;
swap(a + f, a + s);
if(f == k) return a[f];
else if(f < k) return kth(f + 1, e, k);
else return kth(s, f, k);
}
/*
* param k : description of k
* param nums : description of array and index 0 ~ n-1
* return: description of return
*/
int kthLargestElement(int k, vector<int> nums) {
// write your code here
int length = nums.size();
if(length == 0 || k > length)
return 0;
return kth(k, nums, 0, length-1);
}
int main()
{
//srand(time(0)); // Use it, and get "RE" at BZOJ
null = new Treap; root = null;
scanf("%d%d", &m, &Limit);
int delta = 0;
while(m--)
{
char op; int x;
scanf(" %c%d", &op, &x);
if(op == 'I')
{
if(x < Limit) continue;
insert(root, x - delta);
}
else if(op == 'A') delta += x;
else if(op == 'S')
{
delta -= x;
remove(root, Limit - delta);
}
else {
x = root -> size - x + 1;
if(x <= 0) puts("-1");
else printf("%d\n", kth(root, x) + delta);
}
}
printf("%d\n", leave);
return 0;
}
void main()
{
char k[30];
gets(k);
kth(k);
}
void main() {
int i, k;
srand(time(NULL));
scanf("%d", &n);
for(i = 0; i < n; i++)
scanf("%d", a + i);
scanf("%d", &k);
printf("%d\n", kth(0, n, k - 1));
}
int kth(vector<int>& nums, int left, int right, int k) {
if (left == right) {
return nums[left];
}
int pivot = nums[right];
int lp = left, rp = right;
while (lp < rp) {
while (lp < rp && nums[lp] <= pivot) ++lp;
if (lp == rp) break;
nums[rp] = nums[lp];
while (lp < rp && nums[rp] > pivot) --rp;
if (lp == rp) break;
nums[lp] = nums[rp];
}
nums[lp] = pivot;
if (k == lp - left + 1) return pivot;
else if (k < lp - left + 1) return kth(nums, left, lp - 1, k);
else return kth(nums, lp + 1, right, k - (lp - left + 1));
}
int kth(int k, vector<int> &nums, int s, int e) {
if(s == e)
return nums[s];
int p = s+1, q = s+1;
while(q <= e) {
if(nums[q] > nums[s]) {
swap(nums[q], nums[p]);
p++;
}
q++;
}
p--;
swap(nums[p], nums[s]);
if(p-s == k-1)
return nums[p];
else if(p-s > k-1)
return kth(k, nums, s, p);
else
return kth(k-p+s-1, nums, p+1, e);
}
int main() {
Node * root = insert(root, new Node(0));
for (int i = 1; i <= 10; ++i) {
root = insert(root, new Node(i));
}
Node * node = kth(root, 3);
printf("%d\n", node->key);
return 0;
}
ListNode<T>* kth(int k, int &i, ListNode<T> *cur) {
if (cur == nullptr) {
return nullptr;
}
ListNode<T> *res = kth(k, i, cur->prev);
i += 1;
if (i == k) { // Unwiding stack.
return cur;
}
return res;
}
void solve() {
char ch[10];
int a,b;
cnt_query = 0;
int sum = 0;
while(scanf("%s",ch),'E' != ch[0]) {
if('Q' == ch[0]) {
scanf("%d%d",&a,&b);
op[sum] = Command(0,a,b);
}
else if('D' == ch[0]) {
scanf("%d",&a);
op[sum] = Command(1,a,0);
exist[a] = false;
}
else {
scanf("%d%d",&a,&b);
op[sum] = Command(2,a,wei[a]);
wei[a] = b;
}
sum ++;
}
init();
long long ret = 0;
for(int i = sum - 1;i >= 0; i--) {
if(0 == op[i].type) {
int x = op[i].a;
int k = op[i].b;
x = find(x);
cnt_query ++;
ret += (long long)kth(root[x],k);
}
else if(1 == op[i].type) {
int x = op[i].a;
add_edge(edge[x].first,edge[x].second);
}
else {
int x = op[i].a;
int v = op[i].b;
int rt = find(x);
remove(root[rt],wei[x]);
insert(root[rt],v);
wei[x] = v;
}
}
printf("%.6lf\n",(double) ret / (double)cnt_query);
}
void solve ()
{
scanf ("%ld", &n);
for (logn = 1; (1 << logn) <= n; logn++);
logn--;
for (int i = 0; i < n; i++)
for (int j = 0; j <= logn; j++)
d[i][j] = -1;
for (long i = 1, f, t; i < n; i++)
{
scanf ("%ld%ld", &f, &t);
--f;
--t;
scanf ("%ld", &g[f][t]);
g[t][f] = g[f][t];
}
dfs(0);
while (true)
{
scanf ("%s", s);
k = 0;
if (!strcmp("DONE", s))
break;
if (!strcmp("KTH", s))
{
scanf ("%ld %ld %ld ", &A, &B, &k);
printf("%ld\n", kth(A - 1, B - 1, k) + 1);
}
else
{
scanf ("%ld%ld", &A, &B);
lca(A - 1,B - 1);
printf ("%ld\n", res);
}
}
puts("");
for (int i = 0; i < n; i++)
for (int j = 0; j < n; j++)
g[i][j] = 0;
for (int i = 0; i < n; i++)
dist[i] = u[i] = h[i] = 0;
}
inline const T&operator[](int k){
return kth(k);
}
struct elem * kth(struct elem *const e, const unsigned int k) {
unsigned int ls;
return ls = size(e->left), k < ls ? kth(e->left, k) : k == ls ? e : kth(e->right, k - ls - 1);
}
Node* kth(Node* n, int k) {
int leftsz = n->child[0].size;
if (k == leftsz) return n;
if (k < leftsz) return kth(n->child[0], k);
else return kth(n->child[1], k - leftsz - 1);
}
int findKthLargest(vector<int>& nums, int k) {
int len = nums.size();
k = len - k + 1;
return kth(nums, 0, len - 1, k);
}
int kthSmallest(TreeNode* root, int k) {
int cur = 0;
return kth(root, cur, k);
}
T DoublyLinkedList<T>::kthToLastElement(int k) {
int i = 0;
return kth(k, i, this->_front)->getVal();
}
node* kth(node *&t,int k)
{
if (k<=t->chsize(0)) return kth(t->ch[0],k);
else if(k>t->chsize(0)+1) return kth(t->ch[1],k-(t->chsize(0)+1));
else return t;
}
node_type *kth(node_type *p, size_t k) const {
if(k >= size(p)){ return nullptr; }
if(k < size(p->children[0])){ return kth(p->children[0], k); }
if(k == size(p->children[0])){ return p; }
return kth(p->children[1], k - 1 - size(p->children[0]));
}
void select(int left, int right) {
splay(kth(right + 2));
splay(kth(left), root);
}