题面在这里! 比较显而易见的暴力,O(2^(2n) + 2^n * 100) 就可以直接做了 #include<bits/stdc++.h> #define ll long long using namespace std; const int N=4105; #define pb push_back inline int getint(){ int x=0; char ch=getchar(); for(;!isdigit(ch);ch=getchar()); for(;isdigit(ch…
题目描述: A Simple Task time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Given a simple graph, output the number of simple cycles in it. A simple cycle is a cycle with no repeated vertices or…
B. Preparing Olympiad You have n problems. You have estimated the difficulty of the i-th one as integer ci. Now you want to prepare a problemset for a contest, using some of the problems you've made. A problemset for the contest must consist of at le…
题目链接: A. Sonya and Queries time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Today Sonya learned about long integers and invited all her friends to share the fun. Sonya has an initially empty…