Submission #652907

#	Time	Username	Problem	Language	Result	Execution time	Memory
652907		coding_snorlax	Stations (IOI20_stations)	C++14	5 / 100	1037 ms	636 KiB

stations

#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> G[1005];
int vis[1005]={0};
int tree_order[1005];
int now_order=0;
void dfs(int node){
    vis[node]=1;
    tree_order[node]=now_order;
    now_order++;
    for(int i:G[node]){
        if(!vis[i]){
            dfs(i);
        }
    }
    return;
}
void get_graph(vector<int> G1,vector<int> G2){
    for(int i=0;i<1005;i++){
 		G[i].clear();
    }
    for(int i=0;i<(int)G1.size();i++){
        G[G1[i]].push_back(G2[i]);
        G[G2[i]].push_back(G1[i]);
    }
    int start;
    for(int i=0;i<(int)G1.size()+1;i++){
        if((int)G[i].size()==1) start=i;
    }
    for(int i=0;i<1005;i++){
        vis[i]=0;
        now_order=0;
    }
    dfs(start);
    return;
}
vector<int> label(int n,int k,vector<int> u,vector<int> v){
    vector<int> Answer;
    get_graph(u,v);
    for(int i=0;i<n;i++){
        Answer.push_back(tree_order[i]);
    }
    return Answer;
}
//s/1000 is node, s%1000 is connect place
int find_next_station(int s,int t,vector<int> c){
    if ((int)c.size()==1) return c[0];
    else{
        if(s<t) return c[1];
        else return c[0];
    }
}

Compilation message (stderr)

stations.cpp: In function 'void get_graph(std::vector<int>, std::vector<int>)':
stations.cpp:35:8: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
   35 |     dfs(start);
      |     ~~~^~~~~~~

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