Submission #1033223

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033223		vjudge1	Colors (BOI20_colors)	C++17	0 / 100	1 ms	340 KiB

Colors

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

#define int long long
#define ll long long
#define ar array
#define ld long double

const int N = 3e5 + 20;
const int B = 400;
const int M = 200;
const int INF = 1e15;
const int LOG = 24;
const int MOD = 998244353;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,bmi,bmi2,lzcnt,popcnt")

bool query(int x){
	++x;
	int res;
	cout<<"P 1"<<endl;
	cin>>res;
	cout<<"P "<<x<<endl;
	cin>>res;
	return res;
}

signed main(){ios_base::sync_with_stdio(false);cin.tie(0);
	int n;
	cin>>n;
	int lo = 1;
	int hi = n - 1;
	int ans = 0;
	while(lo <= hi){
		int mid = (lo + hi) / 2;
		if(query(mid)){
			hi = mid - 1;
			ans = mid;
		}else lo = mid + 1;
	}
	cout<<"= "<<ans<<endl;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 33