CodeForce 460A :Vasya and Socks

A. Vasya and Sockstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputVasya has n pairs of socks. In the morning of each day Vasya has to put on a pair of socks before he goes to school. When he comes home in the evening, Vasya takes off the used socks and throws them away. Every m-th day (at days with numbers m, 2m, 3m, ...) mom buys a pair of socks to Vasya. She does it late in the evening, so that Vasya cannot put on a new pair of socks before the next day. How many consecutive days pass until Vasya runs out of socks?InputThe single line contains two integers n and m (1 ≤ n ≤ 100; 2 ≤ m ≤ 100), separated by a space.OutputPrint a single integer — the answer to the problem.Examplesinput

2 2

output

3

input

9 3

output

13

NoteIn the first sample Vasya spends the first two days wearing the socks that he had initially. Then on day three he puts on the socks that were bought on day two.In the second sample Vasya spends the first nine days wearing the socks that he had initially. Then he spends three days wearing the socks that were bought on the third, sixth and ninth days. Than he spends another day wearing the socks that were bought on the twelfth day.简单的模拟即可：#include<bits/stdc++.h>//万能头文件
using namespace std;
int main()
{
int n,m,day=0;
scanf("%d %d",&n,&m);
while(n)//只要是袜子数不为0
{
day++;
n--;
if(day%m==0)//当天数是m的倍数
{
n++;袜子数增加
}
}
printf("%d\n",day);
return 0;
}