#include "teams.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int len = 5e5+5;
vector<int> stud[len];
int team[len], n, dp[len]; //pref[len], extra[len], every[len];
struct node{
int sum;
node *left, *right;
node(int s = 0, node *l = NULL, node *r = NULL){
sum = s;
left = l;
right = r;
}
};
typedef node* pnode;
pnode null = new node(), root[len];
pnode update(pnode t, int l, int r, int i){
if (l == r)
return new node(t->sum+1, null, null);
int mid = (l+r)/2;
if (i <= mid)
return new node(t->sum+1, update(t->left, l, mid, i), t->right);
return new node(t->sum+1, t->left, update(t->right, mid+1, r, i));
}
int ask(pnode a, pnode b, int l, int r, int i, int j){
if (r < i || j < l || i > j)
return 0;
if (i <= l && r <= j)
return (a->sum-b->sum);
int mid = (l+r)/2;
return ask(a->left, b->left, l, mid, i, j) + ask(a->right, b->right, mid+1, r, i, j);
}
void init(int N, int A[], int B[]){
n = N;
for (int i = 0; i < n; i++)
stud[A[i]].pb(B[i]);
root[0] = null->left = null->right = null;
for (int i = 1; i <= n; i++){
root[i] = root[i-1];
for (int j = 0; j < stud[i].size(); j++)
root[i] = update(root[i], 1, n, stud[i][j]);
}
}
int can(int m, int K[]){
for (int i = 1; i <= m; i++)
team[i] = K[i-1];
sort(team+1, team+m+1);
int sum = 0;
for (int i = 1; i <= m; i++)
sum = min(n+1, team[i]+sum);
if (sum > n)
return 0;
/*printf("team =\n");
for (int i = 1; i <= m; i++)
printf("%d ", team[i]);
printf("\n");*/
int ans = 1;
for (int i = 1, j = 0; i <= m; i++){
if (dp[i-1]+ask(root[team[i]], root[team[i-1]], 1, n, team[i], n) < dp[j]+ask(root[team[i]], root[team[j]], 1, n, team[i], n))
j = i-1;
dp[i] = dp[j]+ask(root[team[i]], root[team[j]], 1, n, team[i], n)-team[i];
//printf("i = %d, j = %d, dp = %d\n", i, j, dp[i]);
if (dp[i] < 0)
ans = 0;
}
//printf("ans = %d\n", ans);
return ans;
}
