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  1. #include<stdio.h>
  2. int main()
  3. {
  4.     int t;
  5.     scanf("%d",&t);
  6.     while(t>0)
  7.     {
  8.         char st[4];
  9.         int ch,rep[100],count=0,i;
  10.         scanf("%s",&st);
  11.         for(i=0; i<4; i++)
  12.         {
  13.             ch=st[i];
  14.             count=rep[ch];
  15.             rep[ch]++;
  16.  
  17.         }
  18.         if(count==3)
  19.             printf("-1\n");
  20.         else if(count==2)
  21.             printf("6\n");
  22.         else if(count==1)
  23.             printf("4\n");
  24.         t--;
  25.     }
  26. }
Success #stdin #stdout 0s 5316KB
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stdin
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3
0000
9876
3313
stdout
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Standard output is empty
https://ideone.com/u9fYpm
language:
C (gcc 8.3)
created:
13 hours ago
visibility:
public

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