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  1. #include<stdio.h>
  2. int main(void)
  3. {
  4. int n=100;
  5. int i=0;
  6. int sum;
  7. while(n<=999)
  8. {
  9.   sum=n/100+(n/10)%10+n%10;
  10.  
  11.  if(sum%7==0)
  12. {
  13.    i++;
  14. }
  15. n++;
  16. }
  17.  
  18. printf("%d",i);
  19. return 0;
  20. }
  21.  
  22.  
  23.  
Success #stdin #stdout 0s 5316KB
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126
https://ideone.com/6YfEAq
language:
C (gcc 8.3)
created:
6 hours ago
visibility:
public

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