纯模拟

大家好像都没有模拟解答，我来一波

#include<bits/stdc++.h>
using namespace std;
int a[1005];
bool cmp(int a,int b){return a > b;}
int main(){
    int n; cin >> n;
    for(int i = 1;i <= n;i++) cin >> a[i];
    sort(a + 1,a + n + 1,cmp);
    int h1 = 0,h2 = 0;
    for(int i = 1;i <= n;i++){
    	if(i % 2 == 1) h1 += a[i];
        else h2 += a[i];
    }
    cout << abs(h1 - h2);
    return 0;
}