Submission #298460

#	Time	Username	Problem	Language	Result	Execution time	Memory
298460		medk	The Big Prize (IOI17_prize)	C++14	20 / 100	71 ms	416 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=N-1;
    int curall=1, curR=1;
    while(1){
        tmp=ask(ptr);
        curall=tmp[0]+tmp[1];
        if(curall==0) break;
        curR=tmp[1];
        int l=-1,r=ptr;
        while(l<r){
            int md=(l+r+1)/2;
            tmp=ask(md);
            if(tmp[0]+tmp[1]!=curall || tmp[1]!=curR) l=md;
            else r=md-1;
        }
        tmp=ask(l+1);
        if(tmp[0]+tmp[1]==0){
            ptr=l+1;
            break;
        }
        ptr=l;
    }
    return ptr;
}

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