05:最大值和最小值的差

5
2 5 7 4 2

5

#include<iostream>
#include<cstring>
#include<cstdio>
#include<cstdlib>
#include<cmath>
using namespace std;
int a[100001];
int main()
{
    int max=-1;
    int min=10000;
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        if(a[i]>max)max=a[i];
         if(a[i]<min)
        min=a[i];
    }
    cout<<max-min;    
    return 0;
}