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  1. //786/92
  2. //786/92
  3. #include <stdio.h>
  4. #include <string.h>
  5. int main()
  6. {
  7. 	int n,p,i,j,k,l,valid,hf=0,tf=0;
  8. 	char arr[501];
  9. 	k=0,l=0;
  10. 	for(i=1;i<=n;i++)
  11. 	{
  12. 	    valid=1;
  13. 		scanf("%d",&p);
  14. 		scanf("%s",arr);
  15. 		arr[p]='\0';
  16. 		for(j=0;j<p;j++)
  17. 		{
  18. 			if(arr[j]=='H')
  19. 			{
  20. 				k=j;
  21. 				hf++;
  22. 			}
  23. 			if(arr[j]=='T')
  24. 			{
  25. 				l=j;
  26. 				tf++;
  27. 			}
  28. 			if((k<l)||(k==0)&&(l==0))
  29. 			;
  30. 			else
  31. 			{
  32.  
  33. 				valid=0;
  34. 				printf("Invalid\n");
  35. 				break;
  36. 			}
  37. 			if((hf-tf)>=2)
  38. 			{
  39. 				valid=0;
  40. 				printf("Invalid\n");
  41. 				break;
  42.  
  43. 			}
  44. 		}
  45. 		if(valid==1)
  46. 		printf("Valid\n");
  47. 	}	
  48.  
  49.     return 0;
  50. }
  51.  
Success #stdin #stdout 0s 9280KB
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https://ideone.com/MJv6lb
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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