#include <iostream> #include <algorithm> #include <vector> using namespace std; int main(){ int n; cin >> n; vector<int> a(n); ; i < n; ++ i) cin >> a[i]; ; ) maxlen = ; ) maxlen = ; else{ maxlen = ; , r =; ; i <…

#include <iostream> #include <vector> using namespace std; int main(){ ; cin >> n >>k; ; i < n ; ++ i ){ int a; vector<,); cin >> a; while(a){ <=k) goodNum[a%]++; a/=; } ; ; j < k+; ++ j) if(!goodNum[j]) break; )…

B - Free Market 思路:这个题怎么说呢,迷惑性很大,题目里说了交换了两个集合的时候如果有相同元素不能交换,感觉如果没 这句话能很快写出来, 其实当交换的两个集合有重复元素的时候只要交换那些不重复的就好啦,这样就相当于能 交换两个有交的集合,那么对于两个集合S1, S2我们不需要去考虑有没有交只需要考虑sumS1 + d >= sumS2是否 满足条件.所以求个背包从前往后贪心就好啦. #include<bits/stdc++.h> #define LL long long…

题目链接:http://codeforces.com/problemset/problem/242/E 给你n个数,m个操作,操作1是查询l到r之间的和,操作2是将l到r之间的每个数xor与x. 这题是线段树成段更新,但是不能直接更新,不然只能一个数一个数更新.这样只能把每个数存到一个数组中,长度大概是20吧,然后模拟二进制的位操作.仔细一点就行了. #include <iostream> #include <cstdio> #include <cmath> #incl…

Codeforces Round #366 (Div. 2) A I hate that I love that I hate it水题 #I hate that I love that I hate it n = int(raw_input()) s = "" a = ["I hate that ","I love that ", "I hate it","I love it"] for i in ran…

Codeforces Round #354 (Div. 2) Problems     # Name     A Nicholas and Permutation standard input/output 1 s, 256 MB    x3384 B Pyramid of Glasses standard input/output 1 s, 256 MB    x1462 C Vasya and String standard input/output 1 s, 256 MB    x1393…

直达–>Codeforces Round #368 (Div. 2) A Brain’s Photos 给你一个NxM的矩阵,一个字母代表一种颜色,如果有”C”,”M”,”Y”三种中任意一种就输出”#Color”,如果只有”G”,”B”,”W”就输出”#Black&White”. #include <cstdio> #include <cstring> using namespace std; const int maxn = 200; const int INF =…

 cf之路,1,Codeforces Round #345 (Div. 2) ps:昨天第一次参加cf比赛,比赛之前为了熟悉下cf比赛题目的难度.所以做了round#345连试试水的深浅.....       其实这个应该是昨天就写完的,不过没时间了,就留到了今天.. 地址:http://codeforces.com/contest/651/problem/A A. Joysticks time limit per test 1 second memory limit per test 256…

Codeforces Round #279 (Div. 2) 做得我都变绿了! Problems     # Name     A Team Olympiad standard input/output 1 s, 256 MB  x2377 B Queue standard input/output 2 s, 256 MB  x1250 C Hacking Cypher standard input/output 1 s, 256 MB  x740 D Chocolate standard in…

Codeforces Round #262 (Div. 2) 1003 C. Present time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Little beaver is a beginner programmer, so informatics is his favorite subject. Soon his info…