Submission #334092

#	Time	Username	Problem	Language	Result	Execution time	Memory
334092		rocks03	Stations (IOI20_stations)	C++14	0 / 100	3043 ms	2097156 KiB

stations

#include "stations.h"
//#pragma GCC target("avx2")
//#pragma GCC optimization("O3")
//#pragma GCC optimization("unroll-loops")
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first
#define ss second
#define pb push_back
#define SZ(x) ((int)(x).size())
#define all(x) x.begin(), x.end()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int ti;
vector<vector<int>> g;

void dfs(int v, int p, vector<int>& labels){
    for(auto u : g[v]){
        if(u == p)
            continue;
        dfs(u, v, labels);
    }
    labels[v] = ti++;
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v){
	g.resize(n);
	for(int i = 0; i < n-1; i++){
	    g[u[i]].pb(v[i]);
	    g[v[i]].pb(u[i]);
	}
	vector<int> labels(n);
	dfs(0, -1, labels);
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	for(auto v : c){
	    if(v >= t)
	        return v;
	}
	for(auto v : c){
	    if(v >= s){
	        return v;
	    }
	}
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:50:1: warning: control reaches end of non-void function [-Wreturn-type]
   50 | }
      | ^

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