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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5.     long long int n;
  6.     long long int t = 1;
  7.     int c = 1;
  8.  
  9.     scanf("%lld", &n);
  10.  
  11.     for(long long int i = 10; t%n!=0; i*=10)
  12.     {
  13.         t = t + i;
  14.         c++;
  15.         if(t<0){return 0;}
  16.     }
  17.  
  18.     printf("%d\n", c);
  19. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/dlFGIS
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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