제출 #1272478

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1272478		nerrrmin	A Difficult(y) Choice (BOI21_books)	C++20	10 / 100	2 ms	400 KiB

books

#include <bits/stdc++.h>

#include "books.h"
#define pb push_back
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.
//
int n, k, s;
long long a;
long long check(int from, int to)
{
    long long sum = 0;
    for (int i = from; i <= to; ++ i)
    {
        sum += skim(i);
        if(sum > 2*a)return sum;
    }
    return sum;
}
void solve(int N, int K, long long A, int S)
{

    n = N;
    k = K;
    a = A;
    int l = 1, r = n-k+1, mid, ans = -1;
    while(l <= r)
    {
        mid = (l + r)/2;
        long long feedback = check(mid, mid+k-1);
        if(feedback < a)
        {
            l = mid + 1;
        }
        else if(feedback > 2*a)
        {
            r = mid - 1;
        }
        else
        {
            vector < int > v;
            for (int i = mid; i < mid+k; ++ i)
                v.pb(i);
            answer(v);
            return;
        }
    }
    impossible();
}

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