贪心

这个题目我吐了,居然用long long才能过,简单排序+贪心,我们按照从小到大排序就行,这样下一步操作只是将当前最小的数去掉,这样就能保持最大数了

很简单的题目啦~

#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e6 + 10;
typedef long long ll;
ll a[maxn];
int main()
{
    ll n, sum, ans;
    while (~scanf("%d", &n))
    {
        sum = 0, ans = 0;
        for (int i = 1; i <= n; ++i)
        {
            scanf("%lld", &a[i]);
            ans += a[i];
        }
        sort(a + 1, a + n + 1);
        for (int i = 1; i <= n - 1; ++i)
        {
            sum += ans;
            ans -= a[i];
        }
        printf("%lld\n", sum);
    }
}