//PAT-1-1039
#include <stdio.h>
#include <string.h>
int main() {
char s1[2000]={0};
char s2[2000]={0};
scanf("%s",s1);
scanf("%s",s2);
int l1 = strlen(s1);
int l2 = strlen(s2);
int count=0;
for (int i=0; i<l2; i++) {
for (int j=0; j<l1; j++) {
if (s2[i]==s1[j]) {
count++;
s1[j]=1;
break;
}
}
}
if (count==l2) {
printf("Yes %d",l1-count);
}else printf("No %d",l2-count);
return 0;
}