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 ;

 }