杭电hdu 2614 Beat

	C++代码

	/* THE PROGRAM IS MADE BY PYY */ 

	/*----------------------------------------------------------------------------//

	Copyright (c) 2011 panyanyany All rights reserved.

	 

	URL   : http://acm.hdu.edu.cn/showproblem.php?pid=2614

	Name  : 2614 Beat

	 

	Date  : Saturday, August 13, 2011

	Time Stage : 1 hours around

	 

	Result:

	4404951 2011-08-13 14:52:37 Accepted 2614 31MS 192K 1185 B C++ pyy

	 

	 

	Test Data:

	 

	Review:

	一开始没用used标记已做完的工作，结果超时了……

	//----------------------------------------------------------------------------*/ 

	 

	#include <stdio.h> 

	#include <string.h> 

	 

	#define max(a, b) (((a) > (b)) ? (a) : (b)) 

	#define min(a, b) (((a) < (b)) ? (a) : (b)) 

	 

	#define infinity    0x7f7f7f7f 

	#define minus_inf   0x80808080 

	 

	#define MAXSIZE 16 

	 

	int n, most ; 

	int time[MAXSIZE][MAXSIZE], used[MAXSIZE] ; 

	 

	void dfs (int cur, int t, int cnt) 

	{ 

	    most = max (most, cnt) ; // 这里的比较要随时进行

	    if (cnt == n) 

	        return ; 

	 

	    int i ; 

	    for (i = 1 ; i < n ; ++i) 

	    { 

	        if (!used[i] && time[cur][i] >= t) 

	        { 

	            used[i] = 1 ; 

	            dfs (i, time[cur][i], cnt + 1) ; 

	            used[i] = 0 ; 

	        } 

	    } 

	} 

	 

	int main () 

	{ 

	    int i, j ; 

	    while (scanf ("%d", &n) != EOF) 

	    { 

	        most = 0 ; 

	        memset (used, 0, sizeof (used)) ; 

	        for (i = 0 ; i < n ; ++i) 

	        { 

	            for (j = 0 ; j < n ; ++j) 

	                scanf ("%d", &time[i][j]) ; 

	        } 

	        used[0] = 1 ; 

	        dfs (0, 0, 1) ; 

	        printf ("%d\n", most) ; 

	    } 

	    return 0 ; 

	}   

补充：软件开发 , C语言 ,

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