Submission #711587

#	Time	Username	Problem	Language	Result	Execution time	Memory
711587		penguinman	Toy Train (IOI17_train)	C++17	11 / 100	549 ms	1100 KiB

train

#include "train.h"
#include <bits/stdc++.h>

using std::cin;
using std::cout;
using std::vector;
using ll = int;
using vi = vector<ll>;
using vii = vector<vi>;
using std::string;
using pii = std::pair<ll,ll>;

#define rep(i,j,k) for(ll i=ll(j); i<ll(k); i++)
#define REP(i,j,k) for(ll i=ll(j); i<=ll(k); i++)
#define per(i,j,k) for(ll i=ll(j); i>=ll(k); i--)
#define ln "\n"
#define all(a) a.begin(), a.end()
#define mp std::make_pair
#define pb emplace_back

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
	ll N = a.size();
	vii edge(N);
	rep(i,0,u.size()) edge[u[i]].pb(v[i]);
	vi dp = r;
	REP(t,0,N+100){
		rep(i,0,N){
			if(a[i] == 1){
				for(auto next: edge[i]){
					dp[i] |= dp[next];
				}
			}
			else{
				int val = 1;
				for(auto next: edge[i]){
					val &= dp[next];
				}
				dp[i] |= val;
			}
		}
	}
	rep(i,0,N) dp[i] = 1-dp[i];
	REP(t,0,N+100){
		rep(i,0,N){
			if(a[i] == 0){
				for(auto next: edge[i]){
					dp[i] |= dp[next];
				}
			}
			else{
				int val = 1;
				for(auto next: edge[i]){
					val &= dp[next];
				}
				dp[i] |= val;
			}
		}
	}
	rep(i,0,N) dp[i] = 1-dp[i];
	return dp;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 11 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51