제출 #1042527

#제출 시각아이디문제언어결과실행 시간메모리
1042527yanb수천개의 섬 (IOI22_islands)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; //#define int long long #define pii pair<int, int> variant<bool, vector<int>> n2(int n, int M, vector<int> U, vector<int> V) { vector<int> u0, u1; for (int i = 0; i < M; i++) { if (U[i]) u1.push_back(i); else u0.push_back(i); } if (u1.size() > 0 && u0.size() > 1) { vector<int> ans = {u0[0], u1[0], u0[1], u0[0], u1[0], u0[1]}; return ans; } else { return false; } } void dfs(int n, int v, int p, vector<vector<vector<int>>> &g, vector<bool> &uu, vector<int> &ps) { if (uu[v]) return; uu[v] = 1; ps[v] = p; for (int u = 0; u < n; u++) { if (!g[v][u].empty()) { dfs(n, u, v, g, uu, ps); } } } variant<bool, vector<int>> undirected(int n, int M, vector<int> U, vector<int> V) { vector<vector<vector<int>>> g(n, vector<vector<int>>(n)); for (int i = 0; i < M; i++) { g[U[i]][V[i]].push_back(i); } if (g[0].size() > 1) { /*int u = g[0][0].first, v = g[0][1].first; if (u == v) { vector<int> ans = {g[0][0].second, g[u][0].second, g[0][1].second, g[0][0].second, g[u][0].second, g[0][1].second}; return ans; } vector<int> ans = {g[0][0].second, g[u][0].second, g[0][1].second, g[v][0].second, g[u][0].second, g[0][0].second, g[v][0].second, g[0][1].second}; return ans;*/ return true; } vector<bool> uu(n); vector<int> p(n); dfs(n, 0, 0, g, uu, p); for (int i = 0; i < n; i++) { if (g[i].size() > 2 && uu[i]) { /*vector<int> ans, path; int v = i; while (v != 0) { path.push_back(v); v = p[v]; } path.push_back(0); reverse(path.begin(), path.end()); for (int i = 0; i < (int) path.size() - 1; i++) { ans.push_back(g[path[i]]); }*/ return true; } } return false; } variant<bool, vector<int>> find_journey(int n, int M, vector<int> U, vector<int> V) { if (n == 2) return n2(n, M, U, V); return undirected(n, M, U, V); } #ifndef ONLINE_JUDGE signed main() { variant<bool, vector<int>> ans = find_journey(5, 8, {0, 1, 1, 1, 2, 3, 4, 4}, {4, 4, 2, 3, 1, 1, 1, 0}); cout << get<bool>(ans) << "\n"; //cout << get<vector<int>>(ans).size() << "\n"; } #endif

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cc4pJ5ZS.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccTnqgqS.o:islands.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status