Submission #1088700

#	Time	Username	Problem	Language	Result	Execution time	Memory
1088700		Math4Life2020	Game (APIO22_game)	C++17	60 / 100	4096 ms	18124 KiB

game

#include <bits/stdc++.h>
using namespace std;
using ll = int; using pii = pair<ll,ll>;
ll N,K;
const ll INF = 1e9;
vector<vector<ll>> f; //forward edges
vector<ll> mc; //min color
 
void init(int N1, int K1) {
	N=N1; K=K1;
	f.clear(); mc.clear();
	vector<int> vb;
	for (ll i=0;i<N;i++) {
		f.push_back(vb);
		mc.push_back(-INF);
	}
	for (ll k=0;k<K;k++){
		mc[k]=k;
	}
}
 
int add_teleporter(int u, int v) {
	if (u<K && v<K) {
		if (v<=u) {
			return 1;
		} else {
			return 0;
		}
	}
	if (u==v) {
		return 0;
	}
	if (v<K && mc[u]>=v) {
		return 1;
	}
	//cout << "updating u,v="<<u<<","<<v<<"\n";
	f[u].push_back(v);
	if (mc[u]<=mc[v]) {
		return 0;
	}
	stack<int> s;
	ll val = mc[u];
	s.push(v);
	while (!s.empty()) {
		ll x = s.top(); s.pop();
		if (x<K) {
			if (x<=val) {
				return 1;
			}
		} else {
			if (mc[x]<val) {
				//cout << "processD: x="<<x<<"\n";
				mc[x]=val;
				for (ll y: f[x]) {
					s.push(y);
				}
			}
		}
	}
	return 0;
}

• Subtask 1: 2 / 2
• Subtask 2: 10 / 10
• Subtask 3: 18 / 18
• Subtask 4: 30 / 30
• Subtask 5: 0 / 40