hdu2873 Bomb Game-----sg

Bomb GameTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 353    Accepted Submission(s): 165


Problem DescriptionInputOutputSample InputSample OutputSourceRecommend#include<iostream>#include<cstdlib>#include<stdio.h>#include<memory.h>using namespace std;int sg[60][60];char str[60][60];int num[600];int dfs(int x,int y){ memset(num,-1,sizeof(num)); for(int i=0;i<x;i++) for(int j=0;j<y;j++) { num[sg[i][y]^sg[x][j]]=1; } for(int i=0;;i++) if(num[i]==-1) return i;}int main(){ for(int i=0;i<=50;i++) sg[0][i]=sg[i][0]=i; for(int i=1;i<=50;i++) for(int j=1;j<=50;j++) sg[i][j]=dfs(i,j); int n,m; while(scanf("%d%d",&n,&m)!=EOF) { if(n==0&&m==0) break; int ans=0; for(int i=0;i<n;i++) { scanf("%s",str[i]); for(int j=0;j<m;j++) { if(str[i][j]=='#') { ans^=sg[i][j]; } } } if(ans) puts("John"); else puts("Jack"); }}