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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. bool ispalindrome(long long int x)
  4. {
  5.  long long int temp=x,rev=0;
  6.  while(temp!=0)
  7.  {
  8.   rev=rev*10+temp%10;
  9.   temp=temp/10;
  10.  }
  11. if(rev==x)
  12. return 1;
  13. else
  14. return 0;
  15. }
  16.  
  17. bool isprime(long long int num)
  18. {
  19.  int flag=0;
  20.  for(int i=2;i<=sqrt(num);i++)
  21.  {
  22.    if(num%i==0)
  23.    {
  24.      flag=1;
  25.      return 0;
  26.    }
  27.  }
  28.  return 1;
  29. }
  30. int main() {
  31. 	// your code goes here
  32. 	long long int n;
  33. 	scanf("%lld",&n);
  34. 	for(long long int i=n;;i++)
  35. 	{
  36. 	  if((isprime(i))&&(ispalindrome(i)))
  37. 	  {
  38. 	  cout<<i;
  39. 	  exit(0);
  40. 	  }
  41. 	}
  42. 	//cout<<n<<endl;
  43. 	return 0;
  44. }
Success #stdin #stdout 0.01s 2732KB
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https://ideone.com/jtf1Lm
language:
C++ 4.3.2 (gcc-4.3.2)
created:
10 years ago
visibility:
secret

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