#include <bits/stdc++.h>   using namespace std;   char s[100050];   bool vis;   int main() {     scanf( %s , s + 1);     int len = strlen(s + 1);     if (len <= 2) {       printf( No n );       return 0;     }     for (int i = 1; i <= len - 2; i++) {       if (s[i] != s[i + 1] && s[i + 1] != s[i + 2] && s[i] != s[i + 2] &&           s[i] !=  .  && s[i + 1] !=  .  && s[i + 2] !=  . ) {         vis = 1;         break;       }     }     if (vis == 1)       printf( Yes n );     else       printf( No n );   }   