Submission #1088690

#	Time	Username	Problem	Language	Result	Execution time	Memory
1088690		Math4Life2020	Game (APIO22_game)	C++17	2 / 100	0 ms	344 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();
	for (ll i=0;i<N;i++) {
		f.push_back(vector<int>(0,0));
		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;
		}
	}
	f[u].push_back(v);
	if (mc[u]>=mc[v]) {
		return 0;
	}
	stack<pii> s;
	s.push({v,mc[u]});
	while (!s.empty()) {
		ll x = s.top().first; ll val = s.top().second; s.pop();
		if (x<K) {
			if (x<=val) {
				return 1;
			}
		} else if (mc[x]>val) {
			mc[x]=val;
			for (ll y: f[x]) {
				s.push({y,val});
			}
		}
	}
	return 0;
}

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