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 |
|
|
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 |