Submission #603947

#	Time	Username	Problem	Language	Result	Execution time	Memory
603947		inksamurai	Geppetto (COCI15_geppetto)	C++17	80 / 80	23 ms	4436 KiB

geppetto

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,c,n) for(int i=(c);i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3aFGabX ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e

signed main(){
_3aFGabX;
	int n,m;
	cin>>n>>m;
	vi dp(1<<n);
	rep(i,m){
		int u,v;
		cin>>u>>v;
		u-=1,v-=1;
		dp[(1<<u)|(1<<v)]=1;
	}
	rep(j,n){
		rep(msk,(1<<n)){
			if(msk>>j&1){
				dp[msk]+=dp[msk^(1<<j)];
			}
		}
	}
	int res=0;
	rep(msk,(1<<n)){
		res+=(dp[msk]==0);
	}
	print(res);
}

• Subtask 1: 80 / 80