Submission #968963

#	Time	Username	Problem	Language	Result	Execution time	Memory
968963		NotLinux	A Difficult(y) Choice (BOI21_books)	C++17	0 / 100	1 ms	344 KiB

books

#include <bits/stdc++.h>
#include "books.h"
using namespace std;
//
// --- 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) {
    int l = 1 , r = N , sayac = 0;
    while(l < r){
        int mid = (l + r) >> 1;
        sayac++;
        if(skim(mid) <= A * 2){
            l = mid + 1;            
        }
        else{
            r = mid;
        }
    }
    long long sum;
    vector < int > v;
    for(int i = 1;i <= S - sayac;i++){
        if((l - i) <= 0)break;
        long long res = skim(l - i);
        v.push_back(l - i);
        sum += res;
        if(sum >= A and sum <= A * 2){
            answer(v);
        }
        if((int)v.size() == K)break;
    }
    impossible();
}

Compilation message (stderr)

books.cpp: In function 'void solve(int, int, long long int, int)':
books.cpp:32:13: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized]
   32 |         sum += res;
      |         ~~~~^~~~~~

• 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