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  1. #include<iostream>
  2. #include<sstream>
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.  
  8. int n,m=0;
  9.  
  10. char h='a';
  11. cin>>n;
  12. char s[n];
  13. for(int l=0;l<n;l++){
  14. 	cin>>s[l];
  15.  
  16.  
  17. }
  18. for(int j=0;j<n;j++){
  19. 	if(!(isalpha(s[j]))){
  20. 		cout<<"NO";
  21. 		return 0;}
  22.  
  23. }
  24.  
  25. for(int i=0;i<n;i++){
  26. 	if((int)s[i]<93)
  27. 		s[i]=(int)s[i]+32;
  28. }	
  29. for(int k=0;k<n;k++){
  30. 		if(s[k]==h){
  31.  
  32. 			m++;
  33. 			h++;
  34. 			k=0;}	
  35. }
  36. if(m>=26)
  37. 	cout<<"YES";
  38. else
  39. 	cout<<"NO";	
  40.  
  41. }
  42.  
Success #stdin #stdout 0s 4252KB
comments (?)
stdin
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Standard input is empty
stdout
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NO
https://ideone.com/Q1GYDl
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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