#include<bits/stdc++.h>
using namespace std;
int main()
{
long l,n,m;
scanf("%ld",&l);
for(int i=1; i<=l; i++)
{
scanf("%ld %ld",&n,&m);
printf("%ld\n",(n/3)*(m/3));
}
return 0;
}
using namespace std;
int main()
{
long l,n,m;
scanf("%ld",&l);
for(int i=1; i<=l; i++)
{
scanf("%ld %ld",&n,&m);
printf("%ld\n",(n/3)*(m/3));
}
return 0;
}
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