题目链接:http://poj.org/problem?id=1041 题目: 题意:给你n条街道,m个路口,每次输入以0 0结束,给你的u v t分别表示路口u和v由t这条街道连接,要输出从起点出发又回到起点的字典序最小的路径,如果达不到输出Round trip does not exist. 思路:首先得判断是否存在欧拉回路,如果不存在则输出“Round trip does not exist.”.记录每个路口的度,如果存在度为奇数得路口则是不存在欧拉回路得图,否则用mp[u][t]=v来表…
题目链接: http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=995 Problem D: The Necklace My little sister had a beautiful necklace made of colorful beads. Two successive beads in the necklace shared a c…
#include<stdio.h> #include<string.h> #include<stdlib.h> #include<ctype.h> #include<algorithm> #define N 1010 using namespace std; int dp[N], path[N][N], w[N]; int main() { int v, n; while(~scanf("%d", &v)) { sca…
Scandinavians often make vacation during the Easter holidays in the largest ski resort Are. Are provides fantastic ski conditions, many ski lifts and slopes of various difficulty profiles. However, some lifts go faster than others, and some are so po…