oj.uz

Submission #577369

# Submission time Handle Problem Language Result Execution time Memory
577369 2022-06-14T15:48:05 Z handlename Game (APIO22_game) C++17
0 / 100
 8 ms 14288 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
const int MOD=1e9+7;
int n,k;
vector<int> adj[300001],rev[300001];
int l[300001],r[300001];
//leftmost special guy node i can reach
//rightmost special guy who can reach node i
//cycle iff exists l[i]<=r[i]
void init(int N,int K){
	n=N;
	k=K;
	for (int i=1;i<=k;i++){
		if (i<k){
			l[i]=i+1;
			adj[i].pb(i+1);
			rev[i+1].pb(i);
		}
		r[i]=i;
	}
	l[k]=n+1;
	for (int i=k+1;i<=n;i++){
		l[i]=n+1;
		r[i]=0;
	}
}
bool vis[300001];
void dfs0(int x,int val){
	if (vis[x]) return;
	vis[x]=true;
	l[x]=min(l[x],val);
	for (auto i:rev[x]) dfs0(i,val);
}
void dfs1(int x,int val){
	if (vis[x]) return;
	vis[x]=true;
	r[x]=max(r[x],val);
	for (auto i:adj[x]) dfs1(i,val);
}
int add_teleporter(int u,int v){
	u++;
	v++;
	adj[u].pb(v);
	rev[v].pb(u);
	if (l[u]>l[v]){
		for (int i=1;i<=n;i++) vis[i]=false;
		dfs0(u,l[v]);
		for (int i=1;i<=n;i++){
			if (l[i]<=r[i]) return 1;
		}
	}
	if (r[u]>r[v]){
		for (int i=1;i<=n;i++) vis[i]=false;
		dfs1(v,r[u]);
		for (int i=1;i<=n;i++){
			if (l[i]<=r[i]) return 1;
		}
	}
	return 0;
}
void runtc(){
	int N,M,K;
	cin>>N>>M>>K;
	init(N,K);
	while (M--){
		int u,v;
		cin>>u>>v;
		cout<<add_teleporter(u,v)<<'\n';
	}
}

Subtask #1
0.0 / 2.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 14288 KB Wrong Answer[1]
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 14288 KB Wrong Answer[1]
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 14288 KB Wrong Answer[1]
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 14288 KB Wrong Answer[1]
2 Halted 0 ms 0 KB -

Subtask #5
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 14288 KB Wrong Answer[1]
2 Halted 0 ms 0 KB -