제출 #1294662

#제출 시각아이디문제언어결과실행 시간메모리
1294662theiulius세계 지도 (IOI25_worldmap)C++17
컴파일 에러
0 ms0 KiB
// #include "worldmap.h" #include <bits/stdc++.h> #define pb push_back using namespace std; vector<int> v[102]; const int K = 102; int j = 0; vector<std::vector<int>> ans(K, vector<int> (K, 1)); void dfs(int x, int last){ ans[0][j] = x; for (auto h : v[x]){ if (last != h){ j++; dfs(h, x); } } ans[0][j] = x; if (j >= K){ j--; return; } j++; } std::vector<std::vector<int>> create_map(int N, int M, std::vector<int> a, std::vector<int> b) { for (int k = 0; k < M; k++){ v[a[k]].pb(b[k]); v[b[k]].pb(a[k]); } dfs(1, 0); for (int k = 1; k < K; k++){ for (int j = 0; j < K; j++){ ans[k][j] = ans[0][j]; } } return ans; } main(){ auto v = create_map(4, 3, {1, 1, 3}, {2, 3, 4}); cout << v[0].size() << endl; for (auto h : v){ for (auto g : h){ cout << g << " "; } cout << endl; } }

컴파일 시 표준 에러 (stderr) 메시지

worldmap.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main(){
      | ^~~~
/usr/bin/ld: /tmp/cctVddQH.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccOSbDPr.o:worldmap.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status