#include<iostream> using namespace std; int main(){ int n; scanf("%d",&n); if(n/10000n%10&&n%10000/1000n%100/10){ printf("Yes"); }else{ printf("NO"); } return 0; }

#include"cstdio" int main(){ int n; scanf("%d",&n); printf(n/10000= =n%10&&(n%10000-n%1000)/1000= =(n%100-n%10)/10?"Yes":"No"); /* let n=12321 n%10000= =2321 n%1000= =321 n%100= =21 n%10= =1 n/10000= =1 n/1000= =12 n/100= =123 n/10= =1232 (n%10000-n%1000)/1000= =2 (n%100-n%10)/10= =2 */ }