Submission #298569

#	Time	Username	Problem	Language	Result	Execution time	Memory
298569		medk	The Big Prize (IOI17_prize)	C++14	20 / 100	74 ms	504 KiB

prize

#include <bits/stdc++.h>
#include "prize.h"

#define ll long long
#define pb push_back
#define x first
#define y second
#define sz(u) (int)(u.size())
#define all(u) u.begin(),u.end()

using namespace std;

vector<int> tmp;

int find_best(int N){
    int ptr=0;
    int curL=1, curR=1, cnt=0;
    while(1){
        assert(ptr<N && cnt<=9500);
        tmp=ask(ptr);
        cnt++;
        if(tmp[0]+tmp[1]==0) break;
        curL=tmp[0];
        curR=tmp[1];
        int l=ptr,r=N-1;
        while(l<r){
            int md=(l+r+1)/2;
            tmp=ask(md);
            cnt++;
            if(tmp[0]!=curL || tmp[1]!=curR) r=md-1;
            else l=md;
        }
        ptr=l+1;
    }
    return ptr;
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 80