Submission #56560182

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#ifdef DEBUG
#include "E:/OI/normal/templates/debug.h"
#else
#define dbg(...) (void)0
#define msg(...) (void)0
#endif
#define ll long long
#define endl '\n'
#define PB emplace_back
#define PPB pop_back
#define MP make_pair
#define ALL(Name) Name.begin(),Name.end()
#define PII pair<int,int>
#define VI vector<int>
#define GI greater<int>
#define fi first
#define se second

const int N=60;
int n,m;
ll adj[N],eqn[N],ans[N];bool s[N],sol[N];
bool gauss()
{
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)
			if(eqn[j]&&__builtin_ctzll(eqn[j])==i){swap(eqn[i],eqn[j]),swap(s[i],s[j]);break;}
		if(!((eqn[i]>>i)&1))continue;
		for(int j=0;j<n;j++)
			if(j!=i&&((eqn[j]>>i)&1))eqn[j]^=eqn[i],s[j]^=s[i];
	}
	for(int i=0;i<n;i++)dbg(eqn[i],s[i]);
	for(int i=n-1;~i;i--)
		if(!eqn[i])
		{
			if(s[i])return 0;
			sol[i]=1;
		}
		else
		{
			sol[i]=s[i];
			for(int j=i+1;j<n;j++)sol[i]^=sol[j]&&((eqn[i]>>j)&1);
		}
	return 1;
}

int main()
{
	ios::sync_with_stdio(false),cin.tie(nullptr);
//	int _;cin>>_;while(_--)

	cin>>n>>m;
	for(int i=1,u,v;i<=m;i++)cin>>u>>v,--u,--v,adj[u]|=1ll<<v,adj[v]|=1ll<<u;
	for(int i=0;i<n;i++)
	{
		for(int j=0;j<n;j++)s[j]=(adj[j]>>i)&1,eqn[j]=adj[j]&~(1ull<<i);
		if(!gauss())return cout<<"No",0;
		for(int j=0;j<n;j++)ans[j]|=(ll)(sol[j])<<i;
	}
	cout<<"Yes\n";
	for(int i=0;i<n;i++)cout<<ans[i]<<" ";
	
	return 0;
}

Submission Info

Judge Result