PAT 甲级 A1092 （2019/02/18）

#include<cstdio>
#include<cstring>
int change(char ch){
    if(ch >= '0' && ch <= '9') return ch - '0';
    if(ch >= 'a' && ch <= 'z') return ch - 'a' + 10; 
    if(ch >= 'A' && ch <= 'Z') return ch - 'A' + 36;
}
int main(){
    char whole[1001], target[1001];
    int HashTable[80] = {0}, miss = 0;
    scanf("%s", whole);
    scanf("%s", target);
    int len1 = strlen(whole);
    int len2 = strlen(target);
    for(int i = 0; i < len1; i++){
        int id = change(whole[i]);
        HashTable[id]++; 
    }
    for(int j = 0; j < len2; j++){
        int id = change(target[j]);
        HashTable[id]--;
        if(HashTable[id] < 0){
            miss++;
        }
    }
    if(miss > 0) printf("No %d\n", miss);
    else printf("Yes %d\n", len1-len2);
    return 0; 
}