Lang:G++
Edit1234567891011121314151617181920212223242526272829#include <bits/stdc++.h>using namespace std;typedef long long ll;typedef pair<int, int> pii;#define INF 0x3f3f3f3f#define FI first#define SE secondint mod = 1000000007;const int N = 200010;int rec[N];int main(){// freopen("in.txt", "r", stdin);int n;while (~scanf("%d", &n)){int m = n<<1;for (int i = 0; i < m; i++)scanf("%d", rec + i);sort(rec, rec + m);ll sum = 0;swap(rec[0], rec[m-1]);for (int i = 0; i < n; i++)sum += rec[i];printf("%lld\n", sum);}return 0;}