HUST 1585 排队

2019-05-21

10:15:00

加油，加油 ！！！

 #include <bits/stdc++.h>
 using namespace std;
 int main()
 {
     int n, a, b;
     while(~scanf("%d %d %d", &n, &a, &b))
     {
         a = n - a;
         if(a >= b + )
         {
             cout << b + ;
         }
         else
         {
             cout << a;
         }
         cout << endl;
     }
     return ;
 }