Submission #334104

#	Time	Username	Problem	Language	Result	Execution time	Memory
334104		rocks03	Stations (IOI20_stations)	C++14	0 / 100	933 ms	1012 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 t;
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] = t++;
}

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

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

Compilation message (stderr)

stations.cpp:3: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    3 | #pragma GCC optimization("O3")
      | 
stations.cpp:4: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    4 | #pragma GCC optimization("unroll-loops")
      |

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