cigarettes

时间限制：

3000 ms  |  内存限制：

65535 KB

难度：

2

 

描述

Tom has many cigarettes. We hypothesized that he has n cigarettes and smokes them

one by one keeping all the butts. Out of k > 1 butts he can roll a new cigarette. 

Now，do you know how many cigarettes can Tom has?

 

输入

First input is a single line,it's n and stands for there are n testdata.then there are n lines ,each line contains two integer numbers giving the values of n and k.

输出

For each line of input, output one integer number on a separate line giving the maximum number of cigarettes that Peter can have.

样例输入

34 310 3100 5

#include
       
        int main(){    int n,a,b;    int t1,t2,t3,k;    scanf("%d",&n);    while(n--)    {       scanf("%d%d",&a,&b);        t2=0;        k=a;      while(a/b>0)      {          t1=a/b;          t3=a%b;          t2+=t1;          //printf("t2==%d",t2);//          a=t1+t3;      }       printf("%d\n",k+t2);    }   return 0;}