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 + 1)
        {
            cout << b + 1;
        }
        else
        {
            cout << a;
        }
        cout << endl;
    }
    return 0;
}