Uva 10340 - All in All

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
#define lson l,m,rt<<1
#define rson m+1,r,rt<<1|1
int main()
{
char ch[210005],s[210005];
while(~scanf("%s%s",ch,s)) {
int j=0,k=0;
for(int i=0;i<strlen(ch);i++) {
while(s[j]!=ch[i]&&j<strlen(s)) j++;
if(s[j]==ch[i]) k++,j++;
}
if(k==strlen(ch))
cout<<"Yes"<<endl;
else
cout<<"No"<<endl;
}
return 0;
}