> #include <stdio.h>
> int main() {
> 	char a[100100],b[100100];
> 	int i,j;
> 	while(scanf("%s%s",a,b) != EOF) {
> 		for(i=j=0;b[j];j++)
> 			if(a[i] == b[j]) i++;
> 		printf("%s\n",a[i] ? "No":"Yes");
> 	}
> 	return 0;
> }