Unidirectional TSP Problem Description Problems that require minimum paths through some domain appear in many different areas of computer science. For example, one of the constraints in VLSI routing problems is minimizing wire length. The Traveling S…
分阶段的DAG,注意字典序的处理和路径的保存. 定义状态d[i][j]为从i,j 出发到最后一列的最小花费,转移的时候只有三种,向上,向下,或平移. #include<bits/stdc++.h> using namespace std; ; ; int G[maxm][maxn]; const int INF = 1e9; int d[maxm][maxn]; int path[maxn][maxn]; int main() { //freopen("in.txt",&q…
HDU 6311 Cover (无向图最小路径覆盖) Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1967 Accepted Submission(s): 442 Special Judge Problem Description The Wall has down and the King in the north has to sen…