随笔—邀请赛前训—Codeforces Round #328 (Div. 2) A. PawnChess

题意：给你一个8×8的棋盘分布，红黑棋子，双方只能朝上下其中一个方向移动，不可跨越对方或自己的棋子，最先到对面底部的人赢。问谁赢？

思路：上下2排同时开始扫，先扫到谁都棋，谁就赢（前提是没有对方的人挡路。。）

#include<cstdio>
#include<cstring>
#include<iostream>

using namespace std;

#define  MAX(x,y) (((x)>(y)) ? (x) : (y))
#define  MIN(x,y) (((x) < (y)) ? (x) : (y))
#define ABS(x) ((x)>0?(x):-(x))

const int inf = 0x7fffffff;

int occupied_by_black[10];
int occupied_by_white[10];
char mp[10][10];

int main()
{
    char winer=‘*‘;
    for(int i=1; i<=8; i++){
        scanf("%s",mp[i]+1);
    }
    for(int i=1; i<=8; i++){
        int p_for_white=i;
        int p_for_black=8-i+1;
        for(int j=1;j<=8;j++){
            if(mp[p_for_white][j] == ‘B‘)
                occupied_by_black[j]=1;
            if(mp[p_for_white][j] == ‘W‘ && occupied_by_black [j] == 0){
                occupied_by_white[j]=1;
                winer=‘A‘;
                    break;
            }
        }
        if(winer != ‘*‘)
            break;
        for(int j=1; j<=8; j++){
            if(mp[p_for_black][j] == ‘W‘)
                occupied_by_white[j]=1;
            if(mp[p_for_black][j] == ‘B‘ && occupied_by_white [j] == 0){
                occupied_by_black[j]=1;
                winer=‘B‘;
                break;

            }
        }
        if(winer != ‘*‘)
            break;
    }
    cout<<winer<<endl;
    return 0;
}