제출 #405718

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
405718		ly20	Stations (IOI20_stations)	C++17	0 / 100	3056 ms	2097156 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1123;
int marc[MAXN], t;
vector <int> grafo[MAXN];
void dfs(int v, int p) {
    marc[v] = t;
    t++;
    for(int i = 0; i < grafo[v].size(); i++) {
        int viz = grafo[v][i];
        if(viz == p) continue;
        dfs(viz, v);
    }
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector<int> labels;
    for(int i = 0; i < n; i++) {
        grafo[u[i]].push_back(v[i]);
        grafo[v[i]].push_back(u[i]);
    }
    dfs(0, 0);
	for (int i = 0; i < n; i++) {
		labels.push_back(marc[i]);
	}
	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	int rs = -1;
	for(int i= 0; i < c.size(); i++) {
        int viz = c[i];
        if(viz <= t) rs = max(rs, viz);
	}
	return rs;
}

컴파일 시 표준 에러 (stderr) 메시지

stations.cpp: In function 'void dfs(int, int)':
stations.cpp:10:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for(int i = 0; i < grafo[v].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for(int i= 0; i < c.size(); i++) {
      |                ~~^~~~~~~~~~

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