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

样例输出

514124

#include<stdio.h>

int main()

{

 int n;

 scanf("%d",&n);

 while(n--)

 {

  int m,t,sum=0;

  scanf("%d %d",&m,&t);

  sum+=m;

  while(m>=t)

  {

   sum+=m/t;

   m=m/t+m%t;

  }

  printf("%d\n",sum);

 }

 return 0;

}

代码很简单，就是累加问题。做好循环的问题就能解决它了。