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  1. #include <bits/stdc++.h>
  2. #include<cstring>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7. 	// your code goes here
  8. 	string s;
  9. 	cin>>s;
  10. 	bool only_digits=true;
  11. 	for(int i=0;i<s.length();i++){
  12. 		if(!isdigit(s[i])){
  13. 		      only_digits=false;
  14. 			break;
  15. 		}
  16. 		}
  17. 		if(only_digits)
  18. 		{
  19. 				cout<<"Yes"<<endl;
  20. 		}else{
  21. 			cout<<"No"<<endl;
  22. 		}
  23. 	return 0;
  24. }
Success #stdin #stdout 0.01s 5448KB
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SmartInterviews1234
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https://ideone.com/JCIUx2
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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