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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4. bool snt( int n ){
  5. 	if(n < 2) return 0;
  6. 	for(int i=2 ; i<=sqrt(n) ; i++){
  7. 		if(n % i == 0) return 0;
  8. 	}
  9. 	return 1;
  10. }
  11.  
  12. bool tongChuSo ( int n ){
  13.     if(!snt(n)) return 0;
  14. 	int sum = 0;
  15. 	while( n>0){
  16. 		sum += n % 10;
  17. 		n /= 10;
  18. 	}
  19. 	if(!snt(sum)) return 0;
  20.     return 1;
  21. }
  22.  
  23.  
  24. int main() {
  25. 	int n;
  26. 	cin>>n;
  27. 	if(tongChuSo(n)) cout<<"YES."<<endl;
  28.     else cout<<"NO"<<endl;
  29. 	return 0;
  30. }
Success #stdin #stdout 0s 5284KB
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stdin
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Standard input is empty
stdout
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NO
https://ideone.com/WFT95R
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
secret

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