Submission #846159

#	Time	Username	Problem	Language	Result	Execution time	Memory
846159		vjudge1	KOVANICE (COI15_kovanice)	C++17	0 / 100	416 ms	43528 KiB

kovanice

#include<bits/stdc++.h>
#define int long long
#define MOD 1000000007
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

using namespace std;

vector<pair<int,int>>v[300005];
int vis[300005],ans[300005];

void dfs(int node,int x){
	vis[node]=1;
	ans[node]=x;
	for(auto i:v[node]){
		if(vis[i.ff])continue;
		dfs(i.ff,x^i.ss);
	}
	return;
}

int32_t main(){
	int n,m,k;
	cin>>n>>m>>k;
	for(int i=1;i<=m;i++)ans[i]=-1;
	vector<pair<int,int>>v2;
	for(int i=0;i<k;i++){
		string s;
		cin>>s;
		int a=s[0]-'0';
		int b=s[2]-'0';
		if(s[1]=='='){
			v[a].pb({b,0});
			v[b].pb({a,0});
		}
		else{
			v[a].pb({b,1});
			v[b].pb({a,1});
			v2.pb({a,0});
			v2.pb({b,1});
		}
	}
	for(auto i:v2){
		if(vis[i.ff])continue;
		dfs(i.ff,i.ss);
	}
	for(int i=1;i<=m;i++){
		if(ans[i]==-1)cout<<"?"<<endl;
		else cout<<"K"<<ans[i]+1<<endl;
	}
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 10
• Subtask 4: 0 / 40