Submission #1055606

#	Time	Username	Problem	Language	Result	Execution time	Memory
1055606		Trent	Stations (IOI20_stations)	C++17	5 / 100	974 ms	1844 KiB

stations

#include "stations.h"
#include "bits/stdc++.h"
using namespace std;
#define forR(i, x) for(int i = 0; i < (x); ++i)
#define REP(i, a, b) for(int i = (a); i < (b); ++i)
#define all(x) x.begin(), x.end()
typedef vector<int> vi;
typedef vector<bool> vb;
typedef long long ll;
typedef vector<ll> vll;
typedef set<int> si;
typedef vector<vi> vvi;

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	vvi adj(n);
	forR(i, n-1) {
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	vi to(n);
	forR(i, n-1) {
		if(adj[i].size() == 1) {
			int pre=-1, cur=i, ci = 0;
			do {
				int nex = adj[cur][0] == pre ? adj[cur][1] : adj[cur][0];
				to[cur] = ci++;
				pre = cur;
				cur = nex;
			} while(adj[cur].size() != 1);
			to[cur] = ci++;
		}
	}
	return to;
}

int find_next_station(int s, int t, std::vector<int> c) {
	cerr << s << ' ' << t << '\n';
	if(t > s) return c[0] > s ? c[0] : c[1];
	return c[0] < s ? c[0] : c[1];
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61