Submission #428052

#	Time	Username	Problem	Language	Result	Execution time	Memory
428052		jeqcho	The Big Prize (IOI17_prize)	C++17	20 / 100	1 ms	300 KiB

prize

#include "prize.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pii> vpi;

#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define F0R(i,b) FOR(i,0,b)
#define ROF(i,a,b) for(int i=(b)-1;i>=(a);--i)
#define R0F(i,b) ROF(i,0,b)
#define all(x) begin(x),end(x)
#define push_back pb;
#define trav(a,x) for(auto&a:x)
#define sz(x) int(x.size())

bool check(int mid)
{
	vi res = ask(mid);
	int lcnt = res[0];
	return lcnt==0;
}

int find_best(int n) {
	int lef=0;
	int rig=n-1;
	int ans=-1;
	while(lef<=rig)
	{
		int mid=(lef+rig)/2;
		if(check(mid))
		{
			lef=mid+1;
			ans=mid;
		}
		else
		{
			rig=mid-1;
		}
	}
	return ans;
}

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