求助

#include<iostream>
using namespace std;
int main()
{
    int d,b, max = -1, min = 1001;
    cin>>d>>b;
    for (int i = 0; i < b; i++)
    {
        int w;
        cin>>d;
        if (w > max)
            max = w;
        if (min > w)
            min = w;
    }
    cout<<d<<max - min;
    return 0;
}