Submission #432811

#	Time	Username	Problem	Language	Result	Execution time	Memory
432811		A_D	Stations (IOI20_stations)	C++14	5 / 100	993 ms	616 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> ret;
vector<vector<int>> g;
int timer;
void dfs(int u,int p)
{
    ret[u]=timer++;
    for(auto x:g[u]){
        if(x==p)continue;
        dfs(x,u);
    }
}
vector<int> label(int n, int k,vector<int> u,vector<int> v){
    timer=0;
    g.clear();
    ret.clear();
    g.resize(n);
    ret.resize(n);
    for(int i=0;i<u.size();i++){
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
    }
    for(int i=0;i<n;i++){
        if(g[i].size()==1){
            dfs(i,i);
            break;
        }
    }
    return ret;
}

int find_next_station(int s, int t,vector<int> c){
    int mx=0,mn=1e9;
    for(auto x:c){
        mn=min(mn,x);
        mx=max(mx,x);
    }
    if(s<t)return mx;
    else return mn;
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int i=0;i<u.size();i++){
      |                 ~^~~~~~~~~

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