Submission #169948


Source Code Expand

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#include <iostream>
#include <vector>
#include <cstdio>
#include <algorithm>
using namespace std;

int main() {
  int N;
  while (cin >> N) {
    vector<int> C(N);
    for (int i = 0; i < N; ++i) {
      cin >> C[i];
    }
    
    double ans = 0.0;
    for (int i = 0; i < N; ++i) {
      int cnt = 0;
      for (int j = 0; j < N; ++j) {
        if (i == j) {
          continue;
        }
        if (C[i] % C[j] == 0) {
          ++cnt;
        }
      }

      if (cnt == 0) {
        ans += 1.0;
      } else if (cnt % 2 == 1) {
        ans += 0.5;
      } else {
        ans += (cnt / 2 + 1) / (cnt + 1.0);
      }
    }

    printf("%.8f\n", ans);
  }
  return 0;
}

Submission Info

Submission Time
Task C - コイン
User yuta1024
Language C++ (G++ 4.6.4)
Score 100
Code Size 712 Byte
Status AC
Exec Time 25 ms
Memory 932 KB

Judge Result

Set Name Sample Subtask1 Subtask2
Score / Max Score 0 / 0 99 / 99 1 / 1
Status
AC × 3
AC × 20
AC × 40
Set Name Test Cases
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 AC 21 ms 800 KB
sample_02.txt AC 21 ms 676 KB
sample_03.txt AC 21 ms 924 KB
subtask1_01.txt AC 21 ms 924 KB
subtask1_02.txt AC 21 ms 800 KB
subtask1_03.txt AC 20 ms 800 KB
subtask1_04.txt AC 22 ms 916 KB
subtask1_05.txt AC 20 ms 928 KB
subtask1_06.txt AC 20 ms 928 KB
subtask1_07.txt AC 20 ms 924 KB
subtask1_08.txt AC 20 ms 800 KB
subtask1_09.txt AC 21 ms 804 KB
subtask1_10.txt AC 22 ms 804 KB
subtask1_11.txt AC 20 ms 800 KB
subtask1_12.txt AC 21 ms 796 KB
subtask1_13.txt AC 21 ms 804 KB
subtask1_14.txt AC 21 ms 800 KB
subtask1_15.txt AC 21 ms 808 KB
subtask1_16.txt AC 22 ms 736 KB
subtask1_17.txt AC 21 ms 796 KB
subtask1_18.txt AC 22 ms 924 KB
subtask1_19.txt AC 25 ms 932 KB
subtask1_20.txt AC 21 ms 924 KB
subtask2_01.txt AC 21 ms 924 KB
subtask2_02.txt AC 21 ms 928 KB
subtask2_03.txt AC 20 ms 800 KB
subtask2_04.txt AC 21 ms 924 KB
subtask2_05.txt AC 20 ms 800 KB
subtask2_06.txt AC 20 ms 748 KB
subtask2_07.txt AC 22 ms 804 KB
subtask2_08.txt AC 20 ms 924 KB
subtask2_09.txt AC 22 ms 740 KB
subtask2_10.txt AC 23 ms 920 KB
subtask2_11.txt AC 21 ms 928 KB
subtask2_12.txt AC 22 ms 928 KB
subtask2_13.txt AC 21 ms 796 KB
subtask2_14.txt AC 23 ms 852 KB
subtask2_15.txt AC 22 ms 808 KB
subtask2_16.txt AC 22 ms 800 KB
subtask2_17.txt AC 21 ms 796 KB
subtask2_18.txt AC 21 ms 800 KB
subtask2_19.txt AC 20 ms 800 KB
subtask2_20.txt AC 21 ms 924 KB