poj1936 All in All

 1 #include<stdio.h>

 2 char str[100001],sub[100001];

 3 int main()

 4 {

 5     int i,k;

 6     while(~scanf("%s%s",sub,str))

 7     {

 8         for(k=i=0;str[i];i++)

 9             if(str[i]==sub[k]&&sub[k])

10                 k++;

11         if(sub[k]) printf("No\n");

12         else printf("Yes\n");

13     }

14     return 0;

15 }