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poj 1201(查分约束之spfa)
Intervals Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 21758   Accepted: 8191 Description You are given n closed, integer intervals [ai, bi] and n integer...
分类:其他好文   时间:2014-08-23 17:49:31    阅读次数:177
POJ 1201 && HDU 1384 Intervals(差分约束系统)
题目地址:POJ 1201   HDU 1384 根据题目意思,可以列出不等式如下: Sj-Si>=c; Si-S(i-1)>=0; S(i-1)-Si>=-1; 然后用最短路spfa来解决这个不等式。用max来当源点,0为终点。最终的-d[0]就是答案。 代码如下: #include #include #include #include #include #include...
分类:其他好文   时间:2014-08-23 11:22:20    阅读次数:191
POJ训练计划1201_Intervals(差分约束)
解题报告 题目传送门 思路: 解方程组: (a-1)-b 0 Max-Min>=m 源点为Max,求出dis[Max]-dis[Min] #include #include #include #include #include #define N 100001 #define M 550000 #define inf 0x3f3f3f3f using namespace ...
分类:其他好文   时间:2014-08-22 22:38:21    阅读次数:179
Poj3225Help with Intervals区间线段树
这题不说了,都是泪。这题也是拆点。#include #include #include #include #include #include #include #include #include #include #include #include #include#includeusing n.....
分类:其他好文   时间:2014-08-22 00:04:55    阅读次数:178
HDU 3333 Turing Tree (离散化+离线处理+树状数组)
Problem Description After inventing Turing Tree, 3xian always felt boring when solving problems about intervals, because Turing Tree could easily have the solution. As well, wily 3xian made lots of n...
分类:其他好文   时间:2014-08-20 12:36:32    阅读次数:382
[LeetCode] Insert Interval
Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were initial...
分类:其他好文   时间:2014-08-19 10:52:14    阅读次数:307
[LeetCode] Merge Intervals
Given a collection of intervals, merge all overlapping intervals.For example, Given [1,3],[2,6],[8,10],[15,18], return [1,6],[8,10],[15,18].在LeetCode“...
分类:其他好文   时间:2014-08-19 10:50:54    阅读次数:247
HDU1384 Intervals 【差分约束系统】
Intervals Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 2880    Accepted Submission(s): 1048 Problem Description You are given n...
分类:其他好文   时间:2014-08-17 09:12:22    阅读次数:233
POJ1201 Intervals 【差分约束系统】
Intervals Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 21591   Accepted: 8122 Description You are given n closed, integer intervals [ai, bi] and n integ...
分类:其他好文   时间:2014-08-16 11:11:46    阅读次数:323
leetcode -- Merge Intervals
关键不是怎么想,而是怎么做[问题描述]Given a collection of intervals, merge all overlapping intervals.For example,Given[1,3],[2,6],[8,10],[15,18],return[1,6],[8,10],[15...
分类:其他好文   时间:2014-08-15 21:04:39    阅读次数:235
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