uva12545

 #include<iostream>  

 using namespace std; 

 const int maxn =+;  

 char s[maxn],t[maxn];  

 int  main(){
     //freopen("10.in", "r", stdin);
     //freopen("10.out", "w", stdout);
     int n;
     cin >> n;
     for(int i = ; i <= n; i ++){
         cin >> s >> t;
         cout << "Case " << i << ": ";
         int s1 = , t1 = , q1 = , num = ;
         int len = strlen(s);
         for(int j = ; j < len; j ++){
             if(t[j] == '') t1 ++;
             if(s[j] == '') s1 ++;
             if(s[j] == '?'){
                 q1 ++;
                 num ++;
             }
             if(s[j] == '?' && t[j] == ''){
                 s[j] = '';
                 s1 ++;
                 q1 --;
             }
         }
         if(s1 + q1 < t1){
             cout << "-1" << endl;
             continue;
         }
         int sum = t1 - s1;
         int s0 = , s2 = ;
         for(int k = ; k < len; k ++){
             if(s[k] == '' && t[k] == '') s0++;
         }
         if(sum > ){
             s0 += sum;
         }
         num += s0;
         cout << num << endl;
     }
     return ;
 }  

有本事打开啊！！！