1. 程式人生 > >AOJ 0189 Convenient Location (Floyd)

AOJ 0189 Convenient Location (Floyd)

cstring for sci end turn ans max red none

題意:

求某一個辦公室 到其他所有辦公室的 總距離最短 辦公室數 不超過10

輸入:多組輸入,每組第一行為n (1 ≤ n ≤ 45),接下來n行是 (x, y, d),x到y的距離是d
輸出:辦公室號 和 最短距離

#include <iostream>
#include <stdio.h>
#include <algorithm> 
#include <cstring>
#include <string>
using namespace std;
const int INF = 0x3f3f3f3f;

int n, dp[15][15];

int main()
{
	while (cin >> n && n) 
	{
		int V = 0;
		memset(dp, INF, sizeof dp);
		for (int i = 1; i <= n; ++i) 
		{
			int x, y, v; cin >> x >> y >> v;
			dp[x][y] = dp[y][x] = v;
			V = max(V, max(x, y));
		}
		for (int k = 0; k <= V; ++k)
			for (int i = 0; i <= V; ++i)
				for (int j = 0; j <= V; ++j)
					dp[i][j] = min(dp[i][j], dp[i][k] + dp[k][j]);

		int ans = INF, loc;
		for (int i = 0; i <= V; ++i) 
		{
			int t = 0;
			for (int j = 0; j <= V; ++j) 
			{
				if (i == j) continue;
				t += dp[i][j];
			}
			if (t < ans) ans = t, loc = i;
		}
		cout << loc << ‘ ‘ << ans << endl;
	}
	return 0;
}

AOJ 0189 Convenient Location (Floyd)