题意: 给定N个位置,把C头牛分别放入,求相邻两头牛的最大距离. 分析: 即为求两头牛之间最小距离的最大值.二分搜索答案. 代码: #include<iostream> #include<algorithm> #include<cstdio> using namespace std; const int maxn = 100005, INF =0x3fffffff; typedef long long ll; int x[maxn]; int N, C; int jud…
Cows Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 16546 Accepted: 5531 Description Farmer John's cows have discovered that the clover growing along the ridge of the hill (which we can think of as a one-dimensional number line) in hi…
Cows Time Limit: 3000MS Memory Limit: 65536K Description Farmer John's cows have discovered that the clover growing along the ridge of the hill (which we can think of as a one-dimensional number line) in his field is particularly good. Farmer John ha…
Cows 题目:http://poj.org/problem?id=2481 题意:有N头牛,每仅仅牛有一个值[S,E],假设对于牛i和牛j来说,它们的值满足以下的条件则证明牛i比牛j强壮:Si <=Sjand Ej <= Ei and Ei - Si > Ej - Sj. 如今已知每一头牛的測验值,要求输出每头牛有几头牛比其强壮. 思路:将牛依照S从小到大排序.S同样依照E从大到小排序,这就保证了排在后面的牛一定不比前面的牛强壮. 再依照E值(离散化后)建立一颗线段树(这里最值仅仅有1…
Cows Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 17626 Accepted: 5940 Description Farmer John's cows have discovered that the clover growing along the ridge of the h…
Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 9851 Accepted: 3375 Description Farmer John has decided to reward his cows for their hard work by taking them on a tour of the big city! The cows must decide how best to spend their free…
Cows Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 9022 Accepted: 3992 Description Your friend to the south is interested in building fences and turning plowshares into swords. In order to help with his overseas adventure, they are f…
Description Farmer John's cows have discovered that the clover growing along the ridge of the hill (which we can think of as a one-dimensional number line) in his field is particularly good. Farmer John has N cows (we number the cows from 1 to N). Ea…
Cows Time Limit: 2000MS Memory Limit: 65536K Description Your friend to the south is interested in building fences and turning plowshares into swords. In order to help with his overseas adventure, they are forced to save money on buying fence posts b…
Cows Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 6199 Accepted: 2822 Description Your friend to the south is interested in building fences and turning plowshares into swords. In order to help with his overseas adventure, they are f…
Cows Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 7038 Accepted: 3242 Description Your friend to the south is interested in building fences and turning plowshares into swords. In order to help with his overseas adventure, they are f…
Description Your friend to the south is interested in building fences and turning plowshares into swords. In order to help with his overseas adventure, they are forced to save money on buying fence posts by using trees as fence posts wherever possibl…
Description Your friend to the south is interested in building fences and turning plowshares into swords. In order to help with his overseas adventure, they are forced to save money on buying fence posts by using trees as fence posts wherever possibl…
题意:对于两个区间,[si,ei] 和 [sj,ej],若 si <= sj and ei >= ej and ei - si > ej - sj 则说明区间 [si,ei] 比 [sj,ej] 强.对于每个区间,求出比它强的区间的个数. 解题思路:先将每个区间按 e 降序排列,在按 s 升序排列.则对于每个区间而言,比它强的区间的区间一定位于它的前面. 利用数状数组求每个区间[si,ei]前面 满足条件的区间[sj,ej]个数(条件:ej<=ei),再减去前面的和它相同的区间的个…
