题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1394 Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 10…
Description For sequence i1, i2, i3, … , iN, we set aj to be the number of members in the sequence which are prior to j and greater to j at the same time. The sequence a1, a2, a3, … , aN is referred to as the inversion sequence of the original sequen…
Inversion 题目链接: http://acm.hust.edu.cn/vjudge/contest/121349#problem/A Description bobo has a sequence a 1,a 2,-,a n. He is allowed to swap two adjacent numbers for no more than k times. Find the minimum number of inversions after his swaps. Note: Th…
SwapSort 题目链接: http://acm.hust.edu.cn/vjudge/contest/121332#problem/A Description In this problem your goal is to sort an array consisting of n integers in at most n swaps. For the given array find the sequence of swaps that makes the array sorted in…
``Dynamic'' Inversion Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=3141 Description You are given a permutation f1,2,3,. . . ,ng. Remove m of them…
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11788 Accepted Submission(s): 7235 Problem Description The inversion number of a given number sequence a1, a2, ..., an…
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 14952 Accepted Submission(s): 9140 Problem Description The inversion number of a given number sequence a1, a2, ..., an…
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 15517 Accepted Submission(s): 9467 Problem Description The inversion number of a given number sequence a1, a2, ..., a…
A - Poisonous Cookies 题意 有\(A\)个能解毒的普通饼干,\(B\)个能解毒的美味饼干,\(C\)个有毒的美味饼干,求最多能吃多少个美味饼干,每次吃完有毒的饼干后要解毒后才能继续吃. 题解 输出\(\text{min(A + B + 1, C) + B}\)即可. 代码 #include <bits/stdc++.h> using namespace std; int main() { int a, b, c; cin >> a >> b >…
Minimum Inversion Number Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1394 Description The inversion number of a given number sequence a1, a2, ..., an is the number of pairs (ai, aj) that satisfy i < j and ai…
Codeforces Global Round 2 题目链接:https://codeforces.com/contest/1119 A. Ilya and a Colorful Walk 题意: 给出n个数,问从一个数到另外一个不同数的最长距离是多少. 题解: 从前往后,从后往前扫两遍即可.证明可用反证法,这里略去. #include <bits/stdc++.h> using namespace std; typedef long long ll; ; int n; int c[N]; i…
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25092 Accepted Submission(s): 14816 Problem Description The inversion number of a given number sequence a1, a2, ..., a…
Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 24067 Accepted Submission(s): 14252 Problem Description The inversion number of a given number sequence a1, a2, ..., a…
题目总链接:https://codeforces.com/contest/1096 A. Find Divisible 题意: 给出l,r,在[l,r]里面找两个数x,y,使得y%x==0,保证有解. 题解: 直接输出l,2*l就好啦,但我还是写了个循环... 代码如下: #include <bits/stdc++.h> using namespace std; typedef long long ll; ; int T; ll l,r; int main(){ cin>>T; w…
明知道是线段树,却写不出来,搞了半天,戳,没办法,最后还是得去看题解(有待于提高啊啊),想做道题还是难啊. 还是先贴题吧 HDU-1394 Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8324 Accepted Submission(s): 5115 Problem Descri…
Another Version of Inversion 题意:只有2种走路方式,往右或者往下,求先走到一个大的数,在走到小的数的这种方式有多少.也就是说求出关于这个2维矩阵的逆序数. 题解:二维数组+逆序数就完事了. 代码: #include<bits/stdc++.h> using namespace std; #define Fopen freopen("_in.txt","r",stdin); freopen("_out.txt&quo…
题目传送门 Minimum Inversion Number Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25116 Accepted Submission(s): 14827 Problem Description The inversion number of a given number sequence a1, a2,…
我要举报本次校赛出题人的消极出题!!! 官方题解请戳:http://3.scnuacm2015.sinaapp.com/?p=89(其实就是一堆代码没有题解) A. 树链剖分数据结构板题 题目大意:我没看,看不懂. 基本思路:我不会. 参考代码:找Oyk老师和Czj老师去. B. The background of water problem 题目大意(大写加粗的水题):给定$N$个学生和他们$K$个科目的成绩$S_i$,再给出各科目$K_i$的权重顺序$Q_i$,求排名之后,拥有id为$X$的…
Problems # Name A Infinite Sequence standard input/output 1 s, 256 MB x3509 B Restoring Painting standard input/output 1 s, 256 MB x2519 C Money Transfers standard input/output 1 s, 256 MB x724 D Tree Construction standard input/outp…
