제출 #800538

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
800538		Liudas	기지국 (IOI20_stations)	C++17	0 / 100	28 ms	356 KiB

stations

#include <bits/stdc++.h>
#define endl "\n"
using namespace std;
void dfs(int head, int par, vector<vector<int>> &tree, int &col, vector<int> &labels){
    for(int i : tree[head]){
        if(i != par){
            dfs(i, head, tree, col, labels);
        }
    }
    labels[head] = col ++;
}
int find_next_station(int s, int t, vector<int> labels){
    sort(labels.begin(), labels.end());
    for(int i : labels){

    }
    if(t >= labels.back()){
        return labels.back();
    }
    for(int i : labels){
        if(t <= i){
            return i;
        }
    }
}
vector<int> label(int N, int K, vector<int> U, vector<int> V){
    vector<vector<int>> tree(N);
    for(int i = 0; i < N-1; i ++){
        tree[U[i]].push_back(V[i]);
        tree[V[i]].push_back(U[i]);
    }
    vector<int> labels(N);
    int col = 0;
    for(int i = 0; i < N; i ++)if(tree[i].size() > 2)
    dfs(i, -1, tree, col, labels);
    //for(int i : labels)cout << i << endl;
    return labels;
}

컴파일 시 표준 에러 (stderr) 메시지

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:14:13: warning: unused variable 'i' [-Wunused-variable]
   14 |     for(int i : labels){
      |             ^
stations.cpp:25:1: warning: control reaches end of non-void function [-Wreturn-type]
   25 | }
      | ^

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