#include <iostream>#include <cstdio>using namespace std;int main(){ int T; cin>>T;while(T--){ int d,t; cin>>d>>t; double wait1=1.0*t*2.5/4.0; double road1; if(d<=3) { road1=11; } else if(d>3&&d<=10) { road1=11+(d-3)*2.5; } else if(d>10) { road1=11+7*2.5+(d-10)*3.75; } double ans1=road1+wait1; double wait2=1.0*t*2/5.0; double road2; if(d<=3) { road2=10; } else if(d>3&&d<=10) { road2=10+(d-3)*2; } else if(d>10) { road2=10+7*2+(d-10)*3; } double ans2=road2+wait2+1; ans1=(int)(ans1+0.5); ans2=(int)(ans2+0.5); cout<<ans1-ans2<<endl;} return 0;}
