POJ 1936

#include<iostream>
#include<string>
using namespace std;

int main()
{
//freopen("acm.acm","r",stdin);
string s1;
string s2;
int len_1;
int len_2;
int i;
int j;
int index;
while(cin>>s1>>s2)
{
//    cout<<s1<<endl;
//    cout<<s2<<endl;
len_1 = s1.length();
len_2 = s2.length();
index = 0;
for(i = 0; i < len_1; ++ i)
{
for(j = index; j < len_2; ++ j)
{
if(s1[i] == s2[j])
{
index = j+1;
break;
}
}
if(j == len_2)
{
break;
}
}
if(i == len_1)
{
cout<<"Yes"<<endl;
}
else
{
cout<<"No"<<endl;
}
}
}