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  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4. int main (){
  5.     int n, m, arr[100][100];
  6.     cin >> n >> m;
  7.     for(int i = 0; i < n; i++){
  8.         for(int j = 0; j < m; j++){
  9.             cin >> arr[i][j];
  10.         }
  11.     }
  12.     for(int i = 0; i < n; i++){
  13.         for(int j = 0; j < m; j++){
  14.             bool primenum = true;
  15.             if(arr[i][j] <= 1)primenum = false;
  16.             for(int d = 2; d < arr[i][j]; d++){
  17.                 if(arr[i][j] % d == 0){
  18.                     primenum = false;
  19.                     break;
  20.                 }
  21.             }
  22.             if(primenum == true){
  23.                 cout << arr[i][j] << " ";
  24.             }
  25.         }
  26.         cout << endl;
  27.     }
  28. }
  29.  
Success #stdin #stdout 0s 5272KB
comments (?)
stdin
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3 4
1 2 3 4
5 6 7 8 
9 10 11 12
stdout
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2 3 
5 7 
11
https://ideone.com/N5V5Ge
language:
C++14 (gcc 8.3)
created:
37 days ago
visibility:
public

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