제출 #427051

#제출 시각아이디문제언어결과실행 시간메모리
427051Rouge_Hugo커다란 상품 (IOI17_prize)C++14
0 / 100
1 ms320 KiB
#include<bits/stdc++.h>
#include "prize.h"
#define ll long long
#define fi first
#define se second
using namespace std;
int find_best(int n) {
    int l=0,r=n-1;
    vector<int>w=ask(0);
    if(n<=2){
    if(w[0]+w[1]==0)
    {
        return 0;
    }
    else return 1;
    }
    while(l<r)
    {
        int m=(l+r)/2;
        vector<int>v=ask(m);
        if(v[0]==0)
            l=m+1;
        else r=m;
    }return l-1;
}
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