Submission #307440

#	Time	Username	Problem	Language	Result	Execution time	Memory
307440		syy	Stations (IOI20_stations)	C++17	0 / 100	3047 ms	2097156 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define FOR(i, a, b) for(int i = (int)a; i <= (int)b; i++)
#define DEC(i, a, b) for(int i = (int)a; i >= (int)b; i--)
typedef pair<int, int> pi;
typedef pair<pi, int> pii;
typedef pair<pi, pi> pipi;
#define f first
#define s second
typedef vector<int> vi;
typedef vector<pi> vpi;
typedef vector<pii> vpii;
#define pb push_back
#define pf push_front
#define all(v) v.begin(), v.end()
#define disc(v) sort(all(v)); v.resize(unique(all(v)) - v.begin());
#define INF (int) 1e9 + 100
#define LLINF (ll) 1e18
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define sandybridge __attribute__((optimize("Ofast"), target("arch=sandybridge")))
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());    //can be used by calling rng() or shuffle(A, A+n, rng)
inline ll rand(ll x, ll y) { ++y; return (rng() % (y-x)) + x; } //inclusivesss

int n;
vi adj[1005], res;

void dfs(int x, int p, int c) {
	res[x] = c;
	for (auto it:adj[x]) if (it != p) dfs(it, x, c+1);
}

vector<int> label(int N, int k, vector<int> u, vector<int> v) {
	n = N; res.resize(n);
	FOR(i, 0, n-2) adj[u[i]].pb(v[i]), adj[v[i]].pb(u[i]);
	int st = 0; FOR(i, 0, n-1) if (adj[i].size() == 1) st = i;
	dfs(st, -1, 0);
	return res;
}

int find_next_station(int s, int t, std::vector<int> c) {
	return (t > s ? s+1 : s-1);
}

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