Submission #947801

#	Time	Username	Problem	Language	Result	Execution time	Memory
947801		willychan	A Difficult(y) Choice (BOI21_books)	C++17	0 / 100	5 ms	344 KiB

books

#include <bits/stdc++.h>

#include "books.h"

using namespace std;
typedef long long ll;
//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
//     books.h books_sample.cpp sample_grader.cpp
// in a single folder and run:
//     g++ books_sample.cpp sample_grader.cpp
// in this folder.
//

void solve(int N, int K, long long A, int S) {
	if(K!=3) return;
	vector<ll> v(N);
	for(int i=1;i<=N;i++) v[i-1] = skim(i);
	for(int i=0;i<N;i++){
		for(int j=i+1;j<N;j++){
			ll g = v[i]+v[j];
			int l = lower_bound(v.begin()+j+1,v.end(),A-g)-v.begin();
			if(l>j && v[l]+g<=2*A){
				answer({i+1,j+1,l+1});
				return;
			}
		}
	}
	impossible();
	return ;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20