View Code of Problem 61

#include <iostream>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <cmath>
#include <algorithm>
#include <algorithm>
using namespace std;
#pragma warning(disable:4996)


int main() {
	int n;
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		int m;
		int x[100];
		scanf("%d", &m);
		for (int i = 0; i < m; i++) {
			scanf("%d", &x[i]);			
		}
		sort(x, x + m);
		int max = 0;
		int y;
		for (int i = m-1; i >=0; i--) {
			y = x[i] * (m - i);
			if (y > max) {
				max = y;
			}
		}
		printf("%d\n", max);
	}
	return 0;
}