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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int i,a,sen,hyaku,zyu,ichi,count=0;
  5. 	for(i=1;i<10001;i++){
  6. 		sen=i/10;
  7. 		hyaku=(i%10)/10;
  8. 		zyu=(i%100)/10;
  9. 		ichi=(i%1000)/10;
  10. 		a=sen+zyu+ichi+hyaku;
  11. 		if(a%7==3){
  12. 			count++;
  13. 		}
  14.  
  15. 	}
  16. 	 printf("個数は%dである",count);
  17. 	return 0;
  18. }
  19.  
Success #stdin #stdout 0.01s 5288KB
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Standard input is empty
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個数は1430である
https://ideone.com/98ieNw
language:
C99 (gcc 8.3)
created:
9 days ago
visibility:
public

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