제출 #413202

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
413202		losmi247	기지국 (IOI20_stations)	C++14	0 / 100	3133 ms	1644980 KiB

stations

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1005;

int deg[N];
vector <int> g[N];



vector <int> label(int n,int k,vector <int> u,vector <int> v){
    for(int i = 0; i < n-1; i++){
        deg[u[i]]++, deg[v[i]]++;
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
    }


    bool prvi = 1;
    for(int i = 0; i < n; i++) if(deg[i] > 2) prvi = 0;
    if(prvi){
        int cnt = 0;
        vector <int> l(n);
        queue <pair<int,int>> q;
        for(int i = 0; i < n; i++){
            if(deg[i] == 1){
                q.push({i,0});
                break;
            }
        }
        while(!q.empty()){
            int u = q.front().first,par = q.front().second;
            l[u] = cnt++;
            q.pop();
            for(auto v : g[u]){
                if(v == par) continue;
                q.push({v,u});
            }
        }
        return l;
    }
}

int find_next_station(int s,int t,vector <int> c){
    if(s < t){
        return s+1;
    }
    else{
        return s-1;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type]
   42 | }
      | ^

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