Gym101473A Gym101473E Gym101473F-前缀和

代码：

 #include<iostream>
 #include<cstring>
 #include<cstdio>
 #include<cmath>
 #include<algorithm>
 using namespace std;
 int main(){
     int a,b,c;
     int sum;
     while(~scanf("%d%d%d",&a,&b,&c)){
         sum=;
         if(a==)sum++;
         if(b==)sum++;
         if(c==)sum++;
         if(sum==||sum==)printf("*\n");
         if(sum==){
             if(a==)printf("A\n");
             else if(b==)printf("B\n");
             else if(c==)printf("C\n");
         }
         if(sum==){
             if(a==)printf("A\n");
             else if(b==)printf("B\n");
             else if(c==)printf("C\n");
         }
     }
     return ;
 }