Submission #810718

#	Time	Username	Problem	Language	Result	Execution time	Memory
810718		MyCode	A Difficult(y) Choice (BOI21_books)	C++17	0 / 100	1 ms	208 KiB

books

#include <bits/stdc++.h>

#include "books.h"

using namespace std;

void solve(int n, int k, long long A, int S) {
    int l = 1, r = n - k + 1;
    while (r - l > 1) {
        int m = (l + r) / 2;
        if (skim(m + k - 1) >= A)
            r = m;
        else
            l = m;
    }
    int ind = -1;
    if (skim(l + k - 1) >= A) {
        ind = l;
    } else if (skim(r + k - 1) >= A) {
        ind = r;
    }
    long long sum = 0;
    for (int j = ind; j < ind + k; j++)
        sum += skim(j);
    if (ind != -1 && sum >= A && sum <= 2 * A) {
        vector<int> ans;
        for (int i = ind; i < ind + k; i++) ans.emplace_back(i);
        answer(ans);
    } else {
        impossible();
    }
}

• 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