Submission #566528

#	Time	Username	Problem	Language	Result	Execution time	Memory
566528		sofapuden	The Big Prize (IOI17_prize)	C++14	20 / 100	672 ms	1048576 KiB

prize

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

using namespace std;

vector<vector<int>> M;

vector<int> que(int x){
	if(M[x].size())return M[x];
	return M[x] = ask(x);
}

int f(int l, int r){
	int m = (l+r)/2;
	vector<int> v = que(m);
	if(v[0] == 0 && v[1] == 0)return m;
	if(l == r)return -1;
	if(v[1] > v[0]){
		int x = f(m+1,r);
		if(x != -1)return x;
	}
	return f(l,m-1);
}

int find_best(int n) {
	M.resize(n);
	return f(0,n-1);
}

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