zoj 3600

#include<iostream>#include<stdio.h>#include<string>using namespace std;int t;double a,b;double run1(){return a*2+b*3+t*2.0/5.0;}double run2(){return a*2.5+3.75*b+t*2.5/4.0;}int sw(double a){if((a-(int)a)>=0.5){return (int)a+1;}else{return (int)a;}}int main(){int T,d,Tax1,Tax2;scanf("%d",&T);while(T--){scanf("%d%d",&d,&t);a=0,b=0;if(d>10){b=d-10;a=7;}else if(d>3){a=d-3;}Tax1=sw(run1());Tax2=sw(run2());printf("%d\n",Tax2-Tax1);}return 0;}