SORT 8
#include <stdio.h>
void sort(int a[],int n)
{}
int main() {
int a,i,b,j;
scanf("%d",&a);
int q[a][100];
int first=0,second=0,third,product;
for(i=0;i<a;i++)
{
scanf("%d",&b);
for(j=0;j<b;j++)
{
scanf("%d",&q[i][j]);
}
for(j=0;j<b;j++)
{
if (q[i][j] > first)
{
third = second;
second = first;
first = q[i][j];
}
else if (q[i][j] > second)
{
third = second;
second = q[i][j];
}
}product=first*second;
printf("%d\n",product);
}
return 0;
}
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