View Code of Problem 61

#include <iostream>
#include <algorithm>
using namespace std;
int n,t;
int main(){
	cin>>t;
	while(t--){
		cin>>n;
		int a[n+10],res=0;
		for(int i=0;i<n;i++)
			cin>>a[i];
		sort(a,a+n);
		for(int i=0;i<n;i++)
			res=max(res,(n-i)*a[i]);
		cout<<res<<endl;
	}
	return 0;
}

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