제출 #206418

#제출 시각아이디문제언어결과실행 시간메모리
206418anonymous커다란 상품 (IOI17_prize)C++14
20 / 100
107 ms1192 KiB
#include "prize.h"
#include<vector>
#include<map>
#include<utility>
using namespace std;
int slv(int l, int r) {
    if (l == r) {return(l);}
    int mid = (l + r) >> 1;
    vector<int> res = ask(mid);
    if (res[0] + res[1] == 0) {return(mid);}
    int r1 = res[0] ? slv(l, mid-1) : -1, r2 = res[1] ? slv(mid+1, r) : -1;
    return(r1 != -1 ? r1 : r2);
}

int find_best(int n) {
	return(slv(0, n-1));
}
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