【codeforces 510A】Fox And Snake

【题目链接】:http://codeforces.com/contest/510/problem/A

【题意】

让你画一条蛇。。

【题解】

煞笔提

【Number Of WA】

0

【完整代码】

#include <bits/stdc++.h>
using namespace std;
#define lson l,m,rt<<1
#define rson m+1,r,rt<<1|1
#define LL long long
#define rep1(i,a,b) for (int i = a;i <= b;i++)
#define rep2(i,a,b) for (int i = a;i >= b;i--)
#define mp make_pair
#define ps push_back
#define fi first
#define se second
#define rei(x) cin >> x
#define pri(x) cout << x
#define ms(x,y) memset(x,y,sizeof x)

typedef pair<int,int> pii;
typedef pair<LL,LL> pll;

const int dx[9] = {0,1,-1,0,0,-1,-1,1,1};
const int dy[9] = {0,0,0,-1,1,-1,1,-1,1};
const double pi = acos(-1.0);
const int N = 110;

char a[N][N];
int n,m;

int main()
{
    //freopen("F:\\rush.txt","r",stdin);
    ios::sync_with_stdio(false);
    rei(n),rei(m);
    rep1(i,1,n)
        rep1(j,1,m)
            a[i][j]='.';
    rep1(i,1,n)
        if (i&1)
            rep1(j,1,m)
                a[i][j]='#';
    rep1(i,1,n)
        if(!(i&1))
        {
            int d = i/2;
            if (d&1)
            {
                a[i][m]='#';
            }
            else
                a[i][1]='#';
        }
    rep1(i,1,n)
    {
        rep1(j,1,m)
            putchar(a[i][j]);
        puts("");
    }
    //printf("\n%.2lf sec \n", (double)clock() / CLOCKS_PER_SEC);
    return 0;
}