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  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4.  
  5. bool primeNumber(int num) {
  6.     float root = sqrt(num);
  7.     if (num <= 1) {
  8.         return false;
  9.     }
  10.     else if (num == 2 || num == 3) {
  11.         return true;
  12.     }
  13.     else {
  14.         for (int i = 2; i <= root; i++) {
  15.             if (num % i == 0) {
  16.                 return false;
  17.             }  
  18.         }
  19.         return true;
  20.     }
  21.  
  22. }
  23.  
  24.  
  25. int main() {
  26.  
  27.     int num, inputNum, count = 0;
  28.     cin >> num;
  29.  
  30.     for (int i = 0; i < num; i++) {
  31.         cin >> inputNum;
  32.         if (primeNumber(inputNum)) {
  33.             count++;
  34.         }
  35.     }
  36.     cout << count;
  37. }
Time limit exceeded #stdin #stdout 5s 5388KB
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https://ideone.com/A13GBi
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
secret

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