Square Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5443    Accepted Submission(s): 1732 Problem Description Given a set of sticks of various lengths, is it possible to join them end-to-end…

题意:给出n个(不同长度的)棍子,问能不能将他们构成一个正方形. 策略:深搜. hdoj 1455的简化版 代码: #include <stdio.h> #include <string.h> #include <algorithm> #define M 25 using namespace std; int s[M], n, ans;//ans就是答案 bool vis[M]; int dfs(int cou, int cur, int pos){ //cou是已分配…

DFS+剪枝.与HDOJ 1455如出一辙. #include <stdio.h> #include <stdlib.h> #include <string.h> #define MAXN 25 int nums[MAXN], n, len, cnt; char visit[MAXN]; int comp(const void *a, const void *b) { return *(int *)b - *(int *)a; } int dfs(int cnt, in…

HDOJ1518 Square Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11375    Accepted Submission(s): 3660 Problem Description Given a set of sticks of various lengths, is it possible to join them e…

Square Coins Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6416    Accepted Submission(s): 4336 Problem Description People in Silverland use square coins. Not only they have square shapes but…

Problem Description Given a set of sticks of various lengths, is it possible to join them end-to-end to form a square?   Input The first line of input contains N, the number of test cases. Each test case begins with an integer 4 <= M <= 20, the numb…

Problem Description Given a set of sticks of various lengths, is it possible to join them end-to-end to form a square? Input The first line of input contains N, the number of test cases. Each test case begins with an integer 4 <= M <= 20, the number…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1518 题目大意:根据题目所给的几条边,来判断是否能构成正方形,一个很好的深搜应用,注意剪枝,以防超时! #include <iostream> #include <cstdio> #include<algorithm> #include <cstring> using namespace std; ],visit[]; int l,n; int dfs(int…

Square Coins Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11690    Accepted Submission(s): 8007 Problem Description People in Silverland use square coins. Not only they have square shapes but…

Square Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 9588    Accepted Submission(s): 3127 Problem Description Given a set of sticks of various lengths, is it possible to join them end-to-end…