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  1. #include <iostream>
  2. #include <math.h>
  3. #include <stdio.h>
  4. using namespace std;
  5.  
  6. int main() {
  7. int n;
  8. cin>>n;
  9. if(n/1000==n%10 && n%1000/100==n%100/10){
  10. cout<<"YES";
  11. }
  12. else{
  13. cout<<"NO";
  14. }
  15. return 0;
  16. }
Success #stdin #stdout 0s 4548KB
stdin
1234
stdout
NO