HDU 1474 HDU1580 UVA570 Always On the Run

题意都理解了半天，，做了好久，唉好困，半夜了 来不及写解析了，先睡了，放一晚让自己想清楚，明天写，有一些城市，每一行都是第几个城市到其它城市的航班，跟花费，0代表没有，问最小花费

#include<iostream>
#include<cstdio>
#include<list>
#include<algorithm>
#include<cstring>
#include<string>
#include<queue>
#include<stack>
#include<map>
#include<vector>
#include<cmath>
#include<memory.h>
#include<set>

#define ll long long

#define eps 1e-7

#define inf 0xfffffff
const ll INF = 1ll<<61;

using namespace std;

//vector<pair<int,int> > G;
//typedef pair<int,int > P;
//vector<pair<int,int> > ::iterator iter;
//
//map<ll,int >mp;
//map<ll,int >::iterator p;
//


int n,k;

int dp[10 + 5][1000 + 5];
int travel[10 + 5][1000 + 5];
int cost[10 + 5][10 + 5][1000 + 5];

void clear() {
	memset(dp,-1,sizeof(dp));
	memset(travel,0,sizeof(travel));
	memset(cost,0,sizeof(cost));
}

int main() {
	int Case = 0;
	while(scanf("%d %d",&n,&k),n + k) {
		clear();
		for(int i=1;i<=n;i++) {
			for(int j=1;j<=n;j++) {
				if(i != j) {

					scanf("%d",&travel[i][j]);
					for(int l=0;l<travel[i][j];l++)
						scanf("%d",&cost[i][j][l]);
				}
			}
		}
		dp[1][0] = 0;
		int minn;
		for(int j=1;j<=k;j++) {
			for(int i=1;i<=n;i++) {
				minn = -1;
				for(int l=1;l<=n;l++) {
					if(i == l || dp[l][j - 1] < 0)continue;
					int tmp = (j - 1)%travel[l][i];
					if(cost[l][i][tmp] == 0)continue;
					if(minn < 0)
						minn = dp[l][j - 1] + cost[l][i][tmp];
					else if(minn > dp[l][j - 1] + cost[l][i][tmp])
						minn = dp[l][j - 1] + cost[l][i][tmp];
				}
				dp[i][j] = minn;
			}
		}
		printf("Scenario #%d\n",++Case);
		if(dp[n][k] < 0)
			printf("No flight possible.\n\n");  
		else
			printf("The best flight costs %d.\n\n",dp[n][k]);  
	}
	return EXIT_SUCCESS;
}

HDU 1474 HDU1580 UVA570 Always On the Run

原文：http://blog.csdn.net/yitiaodacaidog/article/details/18575655