Submission #944055

#	Time	Username	Problem	Language	Result	Execution time	Memory
944055		thelegendary08	A Difficult(y) Choice (BOI21_books)	C++17	5 / 100	109 ms	1228 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) {
    vector<long long int>v(N);
    for(int i = 1;i<=N;i++){
        v[i-1] = skim(i);
    }
    for(int i = 0;i<N-2;i++){
        for(int j = i+1;j<N-1;j++){
            int l = j+1;
            int r = N-1;
            while(l <= r){
                ll k = (l+r)/2;
                if(v[i] + v[j] + v[k] <= 2*A && v[i] + v[j] + v[k] >= A){
                    answer({i+1, j+1, k+1});
                }
                if(v[i] + v[j] + v[k] > 2*A)r = k-1;
                else l = k+1;
            }
        }
    }
    impossible();
}

Compilation message (stderr)

books.cpp: In function 'void solve(int, int, long long int, int)':
books.cpp:29:40: warning: narrowing conversion of '(k + 1)' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   29 |                     answer({i+1, j+1, k+1});
      |                                       ~^~
books.cpp:29:40: warning: narrowing conversion of '(k + 1)' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]

• Subtask 1: 5 / 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