#include<bits/stdc++.h> using namespace std; #define max 101 /*1 2 4 1 10 15 5 7 1 6 9 10 若将n根绳子扭在一起来吊起一个重量为w的物体,那每根绳子所承受的重量为w/n */ bool cmp (int a,int b); int main(){ int n,m,a[100] = { },max1,max2; cin>>n; for(int u = 0; u<n;u++){ cin>>m; for(int i = 0;i<m;i++)cin>>a[i]; sort(a,a+m,cmp); max2 = a[1]; cout<<max2*2<<endl; } return 0; } bool cmp(int a,int b){ return a>b; } |
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