Submission #1157622

#	Time	Username	Problem	Language	Result	Execution time	Memory
1157622		zhasyn	Stations (IOI20_stations)	C++20	0 / 100	3082 ms	584 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
#define pb push_back
#define pf push_front
using namespace std;
#define F first
#define S second
typedef long long ll;
#define pii pair <int, int>
#define pll pair <ll, ll>
typedef long double ld;
const ll N = 2000 + 100, M = 4096 + 10, len = 21, inf = 1e18;
const ll mod = 1e9 + 7;
ll um(ll a, ll b){
	return (1LL * a * b) % mod;
}
ll subr(ll a, ll b){
	return ((1LL * a - b) % mod + mod) % mod;
}
int pos[N];
vector <int> q[N];
void dfs1(int v, int pred, int cnt){
	pos[v] = cnt;
	for(int i = 0; i < (int)q[v].size(); i++){
		if(q[v][i] == pred) continue;
		dfs1(q[v][i], v, cnt + 1);
	}
}
void dfs2(int v, int pred, int cur){
	if(cur == -1){
		pos[v] = 0;
		cur = 1;
		for(int i = 0; i < (int)q[v].size(); i++){
			dfs2(q[v][i], v, cur);
			cur += 1000;
		}
		return;
	}
	
	pos[v] = cur;
	for(int i = 0; i < (int)q[v].size(); i++){
		if(q[v][i] == pred) continue;
		dfs2(q[v][i], v, cur + 1);
	}
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector <int> labels(n);
	for(int i = 0; i < (int)u.size(); i++){
		q[u[i]].pb(v[i]);
		q[v[i]].pb(u[i]);
	}
	for(int i = 0; i < n; i++){
		labels[i] = i;
	}
	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	int tt = t, last=-1;
	while(tt != s){
		last = tt;
		tt = (tt - 1) / 2;
	}
	if(tt == s) return last;
	return (s - 1) / 2;
}

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