HDOJ 4584/2013年杭州邀请赛I题 Building bridges 水题

不解释 

Program:

#include<iostream>
#include<stdio.h>
#include<cmath>
#include<queue>
#include<stack>
#include<string.h>
#include<map>
#include<set>
#include<algorithm>
#define oo 100007
#define MAXN 100005
using namespace std; 
char s[50][50];
int main()
{
       int n,m,i,j,x1,x2,y1,y2,ax1,ay1,ax2,ay2,ans;
       freopen("input.txt","r",stdin);
       freopen("output.txt","w",stdout);
       while (~scanf("%d%d",&n,&m) && n && m)
       {
               ans=oo;
               for (i=0;i<n;i++) scanf("%s",s[i]);
               for (y1=0;y1<n;y1++)
                  for (x1=0;x1<m;x1++)
                     if (s[y1][x1]=='H')
                        for (y2=0;y2<n;y2++)
                           for (x2=0;x2<m;x2++)
                              if (s[y2][x2]=='C')
                                 if (abs(x1-x2)+abs(y1-y2)<ans)
                                 {
                                        ans=abs(x1-x2)+abs(y1-y2);
                                        ax1=x1,ax2=x2,ay1=y1,ay2=y2;
                                 }
               printf("%d %d %d %d\n",ay1,ax1,ay2,ax2);
       }
       return 0;
}