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  1. #include<stdio.h>
  2. #include<string.h>
  3. #include<math.h>
  4.  
  5. #define max(a,b) a>=b?a:b
  6. #define min(a,b) a<=b?a:b
  7. #define LL long long
  8. #define MAX 200
  9. int main()
  10. {
  11.     int n,m,i,j;
  12.     scanf("%d %d",&n,&m); // names , length of names
  13.     char arr[MAX][MAX];
  14.     for(i=0;i<n;i++)
  15.     {
  16.         scanf("%s",arr[i]);
  17.     }
  18.  
  19.     LL prod=1;
  20.    for(j=0;j<m;j++)
  21.    { 
  22.        LL c=0;
  23.        int count[MAX]={0};
  24.       for(i = 0; i < n; i++)
  25.       {  
  26.         if(count[(int)arr[i][j]] == 1)
  27.            {
  28.                ;
  29.            }
  30.         else
  31.            {
  32.                count[(int)arr[i][j]]++;
  33.                c++; 
  34.              //  printf("Hello");
  35.            }
  36.       }
  37.      // printf("Bye");
  38.       prod=prod*c;
  39.  
  40.    }    
  41.    prod=prod%1000000007;
  42.    printf("%lld",prod);
  43.  
  44.  
  45.  
  46.  
  47.     return 0;
  48. }
Success #stdin #stdout 0s 2116KB
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https://ideone.com/i5CbE9
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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