1 #include <cstdio>
 2 #include <cstring>
 3 #include <algorithm>
 4 #include <iostream>
 5 #include <sstream>
 6 using namespace std;
 7 typedef long long ll;
 8 const int maxn = 1e6 + 6;
 9 int nxt[maxn];
10 char pat[maxn];
11 char maz[maxn];
12 
13 bool solve(){
14     int cnt = 0;
15     for(int i = 0;maz[i];i++){
16         if(maz[i] == pat[cnt])cnt++;
17         if(pat[cnt] == 0)return true;
18     }
19     return false;
20 }
21 
22 int main(){
23 #ifdef LOCAL
24     freopen("input.txt","r",stdin);
25 #endif // LOCAL
26     for(int i = 0;scanf("%s%s",pat,maz)==2;i++){
27         bool ans = solve();
28         if(ans){
29             puts("Yes");
30         }else{
31             puts("No");
32         }
33     }
34 
35     return 0;
36 }