제출 #430720

#제출 시각아이디문제언어결과실행 시간메모리
430720JUANDI321Stations (IOI20_stations)C++17
컴파일 에러
0 ms0 KiB
#include "stations.h" #include <vector> #include <iostream> using namespace std; vector<vector<int>> g(1010); vector<int> l(1010); bool ch[1010]; void dfs(int node, int i) { //if(ch[node])return; ch[node]=true; l[i] = node; //cout<<node<<endl; for(int y : g[node]) { if(!ch[y]) { dfs(y, i+1); } } } vector<int> label(int n, int k, vector<int> u, vector<int> v) { vector<int> labels(n); for(int i = 0; i < n-1; i++) { g[u[i]].push_back(v[i]); g[v[i]].push_back(u[i]); } int spn = 0; for(int i = 0; i < n; i++) { if(g[i].size() == 1) { spn = i; break; } } //dfs(spn, 0);//cout<<"hola"<<endl; for (int i = 0; i < n; i++) { labels[/*l[*/i/*]*/] = i; //cout<<"l[i] "<<l[i]<<" i "<<i<<endl; } return labels; } int find_next_station(int s, int t, vector<int> c) { if(t>s)return s+1; return s-1; } int main() { vector<int> u = {4, 9, 2, 5, 8, 1, 8, 6, 3}; vector<int> v = {5, 0, 6, 2, 3, 4, 1, 0, 7}; vector<int> labell(10); labell = label(10, 10, u, v); cout<<"hello"<<endl; cout<<find_next_station(1, 3, {0, 2})<<endl; }

컴파일 시 표준 에러 (stderr) 메시지

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:32:6: warning: variable 'spn' set but not used [-Wunused-but-set-variable]
   32 |  int spn = 0;
      |      ^~~
/usr/bin/ld: /tmp/ccQkQbpb.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccRv84m8.o:stations.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status