Submission #3783445


Source Code Expand

#include <cstdio>
#include <numeric>
#include <algorithm>
#include <iostream>
using namespace std;
long long C(int n, int k) {
    long long ans = 1;
    for (int i = 0; i < k; i++) ans = ans * (n - i) / (i + 1);
    return ans;
}

int main(int argc, char** argv) {
    int n, a, b; cin >> n >> a >> b;
    long long v[n]; for (int i = 0; i < n; i++) cin >> v[i];
    sort(v, v+n);
    long long numer = 0, denom = 1, count = 0;
    for (int k = a; k <= b; k++) {
        long long x = v[k-1];
        int left = lower_bound(v, v+n, x) - v;
        int right = upper_bound(v, v+n, x) - v;
        long long sum = accumulate(v+n-k, v+n, 0LL);
        if (numer * k < sum * denom) {
            numer = sum; denom = k; count = C(right - left, right - k);
        }
        else if (numer * k == sum * denom) count += C(right - left, right - k);
    }
    printf("%.18f\n%lld\n", (double)numer/denom, count);
}

Submission Info

Submission Time
Task D - Maximum Average Sets
User kozima
Language C++14 (GCC 5.4.1)
Score 0
Code Size 936 Byte
Status WA
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 400
Status
AC × 4
AC × 11
WA × 8
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt
All sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, subtask_1_1.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_2.txt, subtask_1_3.txt, subtask_1_4.txt, subtask_1_5.txt, subtask_1_6.txt, subtask_1_7.txt, subtask_1_8.txt, subtask_1_9.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 256 KB
sample_02.txt AC 1 ms 256 KB
sample_03.txt AC 1 ms 256 KB
sample_04.txt AC 1 ms 256 KB
subtask_1_1.txt AC 1 ms 256 KB
subtask_1_10.txt WA 1 ms 256 KB
subtask_1_11.txt WA 1 ms 256 KB
subtask_1_12.txt WA 1 ms 256 KB
subtask_1_13.txt WA 1 ms 256 KB
subtask_1_14.txt WA 1 ms 256 KB
subtask_1_15.txt WA 1 ms 256 KB
subtask_1_2.txt AC 1 ms 256 KB
subtask_1_3.txt AC 1 ms 256 KB
subtask_1_4.txt AC 1 ms 256 KB
subtask_1_5.txt AC 1 ms 256 KB
subtask_1_6.txt WA 1 ms 256 KB
subtask_1_7.txt AC 1 ms 256 KB
subtask_1_8.txt AC 1 ms 256 KB
subtask_1_9.txt WA 1 ms 256 KB