题解

#include<bits/stdc++.h>
using namespace std;
int n,a[1001],maxn,minn;
double num;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++)cin>>a[i];
    maxn=a[1];
    minn=a[1];
    for(int i=1;i<=n;i++){
         if(a[i]>maxn)maxn=a[i];
         if(a[i]<minn)minn=a[i];
    }
    cout<<maxn-minn;
    return 0;
}