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【图论之二分图匹配问题】总结
1.求解两组人最多可以匹配几对,经典的例题,红线代表互有好感,问最多能搓成几对情侣2.例题:【HDU2063】过山车(二分图匹配,模板题)3.模板:匈牙利算法bool find(int x){ for(int i=1;i<=m;i++) { if(!vis[i] && G[x][i])//如果可以匹配,且未被匹配过 ...原创 2019-03-21 17:56:29 · 492 阅读 · 0 评论 -
【POJ - 2253 】Frogger(dijkstra,变形最短路,求最大值最小)
FroggerPOJ - 2253改一下松弛写法:dis[j] = min(dis[j],max(dis[k],get_dis(p[k],p[j])));//dis[j]为从一号石头到第j号石头所有通路中最长边中的最小边看评论提醒要么输出写%.3f,要么编译环境选C++,不然写%.3lf就卡,我也不知道为什么...#include <iostream>...原创 2019-04-03 20:59:47 · 182 阅读 · 0 评论 -
【POJ - 1797】Heavy Transportation(图论,最短路,dijkstra变形,求最小值最大)
BackgroundHugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand business. But he needs a clever man who tells him whether there really is a way from the place his...原创 2019-04-09 14:19:08 · 235 阅读 · 0 评论 -
【HDUOJ】 2544 最短路 (dijkstra,模板题,简单)
最短路Time Limit: 5000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 98133Accepted Submission(s): 42371Problem Description在每年的校赛里,所有进入决赛的同学都会获得一件很漂亮的t...原创 2019-03-14 11:57:00 · 258 阅读 · 0 评论 -
【POJ - 2387 】最短路(dijkstra,简单,模板题)
Til the Cows Come HomePOJ - 2387#include <iostream>#include <algorithm>#include <vector>#include <cstring>#include <set>#include <map>#include <q...原创 2019-04-03 20:08:50 · 241 阅读 · 0 评论 -
【图论之最短路】dijkstra入门
例题【HDUOJ】 2544 最短路 (dijkstra,模板题,简单)【POJ - 2387 】最短路(dijkstra,简单,模板题)【zcmuoj】1624: 最短路(dijkstra,别忘记重复边呀)【HDU2066】一个人的旅行(dijkstra,再也不会忘mem(vis)放置在dijkstra里)【POJ - 2253】Frogger(dijkstra,变形最短路...原创 2019-04-09 22:14:23 · 656 阅读 · 0 评论 -
【POJ - 3268 】Silver Cow Party (dijkstra变形,两次dijkstra)
One cow from each ofNfarms (1 ≤N≤ 1000) conveniently numbered 1..Nis going to attend the big cow party to be held at farm #X(1 ≤X≤N). A total ofM(1 ≤M≤ 100,000) unidirectional (one-way r...原创 2019-04-09 23:23:50 · 139 阅读 · 0 评论