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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5. 	int n,i;
  6. 	int count=0;
  7. 	unsigned int ans=0;
  8. 	char buffer[128];
  9. 	scanf("%d",&n);
  10. 	n--;
  11. 	scanf("%s",buffer);
  12. 	for(i=0;buffer[i]!='\0';i++) {
  13. 		ans|=(1u<<(buffer[i]-'a'));
  14. 	}
  15. 	while(n--) {
  16. 		scanf("%s",buffer);
  17. 		unsigned int curr=0;
  18. 		for(i=0;buffer[i]!='\0';i++) {
  19. 			curr|=(1u<<(buffer[i]-'a'));
  20. 		}
  21. 		ans&=curr;
  22. 	}
  23. 	for(i=0;i<26;i++) {
  24. 		if(ans&(1u<<i)) {
  25. 			count++;
  26. 		}
  27. 	}
  28. 	printf("%d\n",count);
  29. 	return 0;
  30. }
Success #stdin #stdout 0s 4568KB
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https://ideone.com/8cvSvY
language:
C (gcc 8.3)
created:
6 years ago
visibility:
secret

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