#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<cmath>
#include<algorithm>
#include<cstdlib>
using namespace std;
int tt,n,m;
int main()
{
      int ans;
      scanf("%d",&tt);
      while(tt--)
      {
            ans=0;
            scanf("%d%d",&n,&m);
            int ret;
            for(int i=0;i<=m/5;i++)
            {
                  ret=m-5*i;
                  if(ret>=(n-i)&&ret<=2*(n-i))
                        ans++;
            }
            printf("%d\n",ans);
      }
      return 0;
}