A. Fox And Snake
题目连接：
http://codeforces.com/contest/510/problem/A
Description
Fox Ciel starts to learn programming. The first task is drawing a fox! However, that turns out to be too hard for a beginner, so she decides to draw a snake instead.
A snake is a pattern on a n by m table. Denote c-th cell of r-th row as (r, c). The tail of the snake is located at (1, 1), then it's body extends to (1, m), then goes down 2 rows to (3, m), then goes left to (3, 1) and so on.
Your task is to draw this snake for Fox Ciel: the empty cells should be represented as dot characters ('.') and the snake cells should be filled with number signs ('#').
Consider sample tests in order to understand the snake pattern.
Input
The only line contains two integers: n and m (3 ≤ n, m ≤ 50).
n is an odd number.
Output
Output n lines. Each line should contain a string consisting of m characters. Do not output spaces.
Sample Input
3 3
Sample Output
..#
Hint
题意
让你画出n*m的弯道，一直转弯的那种
题解：
水题，模拟一下就好了
代码
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,m;scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
if(i%2==1)
printf("#");
else if(i%4==2&&j==m)
printf("#");
else if(i%4==0&&j==1)
printf("#");
else printf(".");
}
printf("
");
}
}