Submission #3968369
Source Code Expand
#include <bits/stdc++.h> using namespace std; long long calcPermutation(long long x, long long y) { long long ans = 1; for (long long i = 0; i < y; i++) { ans *= (x - i); } return ans; } float calcCombination(long long x, long long y) { if (x < y) { return 0; } if ((x - y) < y) { y = x - y; } long long ans = calcPermutation(x, y); while (y > 0) { ans /= y; y--; } return (float)ans; } int main() { long long N; cin >> N; long long C[N]; for (long long i = 0; i < N; i++) { cin >> C[i]; } long long D[N] = {}; for (long long i = 0; i < N; i++) { for (long long j = 0; j < N; j++) { if (C[i] % C[j] == 0 && i != j) { D[i]++; } } } cout << endl; float ans; for (long long i = 0; i < N; i++) { for (long long j = 0; j < N; j++) { int count = 0; for (long long k = 0; k <= D[i] && k <= j; k += 2) { count += calcCombination(D[i], k) * calcCombination(N - 1 - D[i], j - k); } ans += count / calcCombination(N - 1, j); } } cout << ans / N << endl; }
Submission Info
Submission Time | |
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Task | C - コイン |
User | dhgrs |
Language | C++14 (GCC 5.4.1) |
Score | 100 |
Code Size | 1374 Byte |
Status | WA |
Exec Time | 62 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | Subtask1 | Subtask2 | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 99 / 99 | 1 / 1 | ||||||||
Status |
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Set Name | Test Cases |
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Sample | sample_01.txt, sample_02.txt, sample_03.txt |
Subtask1 | subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt |
Subtask2 | subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt, subtask2_12.txt, subtask2_13.txt, subtask2_14.txt, subtask2_15.txt, subtask2_16.txt, subtask2_17.txt, subtask2_18.txt, subtask2_19.txt, subtask2_20.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | WA | 1 ms | 256 KB |
sample_02.txt | AC | 1 ms | 256 KB |
sample_03.txt | AC | 1 ms | 256 KB |
subtask1_01.txt | AC | 1 ms | 256 KB |
subtask1_02.txt | AC | 1 ms | 256 KB |
subtask1_03.txt | AC | 1 ms | 256 KB |
subtask1_04.txt | AC | 1 ms | 256 KB |
subtask1_05.txt | AC | 1 ms | 256 KB |
subtask1_06.txt | AC | 1 ms | 256 KB |
subtask1_07.txt | AC | 1 ms | 256 KB |
subtask1_08.txt | AC | 1 ms | 256 KB |
subtask1_09.txt | AC | 1 ms | 256 KB |
subtask1_10.txt | AC | 1 ms | 256 KB |
subtask1_11.txt | AC | 1 ms | 256 KB |
subtask1_12.txt | AC | 1 ms | 256 KB |
subtask1_13.txt | AC | 1 ms | 256 KB |
subtask1_14.txt | AC | 1 ms | 256 KB |
subtask1_15.txt | AC | 1 ms | 256 KB |
subtask1_16.txt | AC | 1 ms | 256 KB |
subtask1_17.txt | AC | 1 ms | 256 KB |
subtask1_18.txt | AC | 1 ms | 256 KB |
subtask1_19.txt | AC | 1 ms | 256 KB |
subtask1_20.txt | AC | 1 ms | 256 KB |
subtask2_01.txt | AC | 1 ms | 256 KB |
subtask2_02.txt | AC | 1 ms | 256 KB |
subtask2_03.txt | AC | 2 ms | 256 KB |
subtask2_04.txt | AC | 5 ms | 256 KB |
subtask2_05.txt | AC | 14 ms | 256 KB |
subtask2_06.txt | AC | 5 ms | 256 KB |
subtask2_07.txt | AC | 4 ms | 256 KB |
subtask2_08.txt | AC | 62 ms | 256 KB |
subtask2_09.txt | AC | 62 ms | 256 KB |
subtask2_10.txt | AC | 60 ms | 256 KB |
subtask2_11.txt | AC | 43 ms | 256 KB |
subtask2_12.txt | AC | 43 ms | 256 KB |
subtask2_13.txt | AC | 8 ms | 256 KB |
subtask2_14.txt | AC | 46 ms | 256 KB |
subtask2_15.txt | AC | 44 ms | 256 KB |
subtask2_16.txt | AC | 9 ms | 256 KB |
subtask2_17.txt | AC | 60 ms | 256 KB |
subtask2_18.txt | AC | 3 ms | 256 KB |
subtask2_19.txt | AC | 9 ms | 256 KB |
subtask2_20.txt | AC | 62 ms | 256 KB |