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
-
3
4 3
10 3
100 5 - 样例输出
-
5
14
124
# include<stdio.h>
int main()
{
int n,a,b,k;
scanf("%d",&n);
while(n--)
{
scanf("%d %d",&a,&k);
b = a;
while(b/k!=0)
{
a = a + b/k;
b = b/k + b%k;
}
printf("%d\n",a);
}
return 0;
}