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Jan 18th, 2020
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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5. char a[1100],b;
  6. int n=0,i=0;
  7. while(1)
  8. {
  9. fflush(stdin);
  10. gets(a);
  11. strlwr(a);
  12. if(a[0]=='*')
  13. break;
  14. b=a[0];n=0;
  15. for(i=0;i<strlen(a);i++)
  16. {
  17. if(a[i]==' ')
  18. {
  19. if(a[i+1]==b)
  20. {
  21. i++;
  22. continue;
  23. }
  24. else
  25. {
  26. n=1;
  27. break;
  28. }
  29. }
  30. }
  31. if(n==0)
  32. cout<<"Y"<<endl;
  33. else
  34. cout<<"N"<<endl;
  35. }
  36. return 0;
  37. }
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