제출 #963845

#제출 시각아이디문제언어결과실행 시간메모리
963845nguyentunglam슈퍼트리 잇기 (IOI20_supertrees)C++17
컴파일 에러
0 ms0 KiB
#include "supertrees.h" #include "grader.cpp" #include <vector> #include<bits/stdc++.h> using namespace std; int construct(std::vector<std::vector<int>> p) { int n = p.size(); auto valid = [&] (vector<int> a, vector<int> b, int c) { for(int &j : a) for(int &k : b) if (p[j][k] != c) return false; return true; }; vector<int> vis(n), arr; auto dfs = [&] (auto self, int u) -> void { vis[u] = 1; arr.push_back(u); for(int v = 0; v < n; v++) if (!vis[v] && p[u][v] == 1) self(self, v); }; std::vector<std::vector<int>> answer(n, vector<int> (n)); auto add = [&] (int u, int v) { answer[u][v] = answer[v][u] = 1; }; vector<vector<int> > connected; for(int i = 0; i < n; i++) if (!vis[i]) { arr.clear(); dfs(dfs, i); if (!valid(arr, arr, 1)) return 0; connected.push_back(arr); for(int j = 1; j < arr.size(); j++) { answer[arr[j]][arr[j - 1]] = answer[arr[j - 1]][arr[j]] = 1; } } for(int i = 0; i < n; i++) vis[i] = 0; for(int i = 0; i < connected.size(); i++) if (!vis[i]) { vector<int> zip, g; g.push_back(i); for(auto &k : connected[i]) zip.push_back(k); for(int j = 0; j < connected.size(); j++) if (p[connected[i][0]][connected[j][0]] == 2) { if (vis[j]) return 0; if (!valid(zip, connected[j], 2)) return 0; for(auto &k : connected[j]) zip.push_back(k); g.push_back(j); } if (g.size() == 1) continue; if (g.size() < 3) return 0; for(int i = 1; i < g.size(); i++) { add(connected[g[i]][0], connected[g[i - 1]][0]); } add(connected[g[0]][0], connected[g.back()][0]); } build(answer); return 1; }

컴파일 시 표준 에러 (stderr) 메시지

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for(int j = 1; j < arr.size(); j++) {
      |                    ~~^~~~~~~~~~~~
supertrees.cpp:44:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |   for(int i = 0; i < connected.size(); i++) if (!vis[i]) {
      |                  ~~^~~~~~~~~~~~~~~~~~
supertrees.cpp:48:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for(int j = 0; j < connected.size(); j++) if (p[connected[i][0]][connected[j][0]] == 2) {
      |                    ~~^~~~~~~~~~~~~~~~~~
supertrees.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     for(int i = 1; i < g.size(); i++) {
      |                    ~~^~~~~~~~~~
/usr/bin/ld: /tmp/ccuSvnZB.o: in function `build(std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)':
grader.cpp:(.text+0x260): multiple definition of `build(std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)'; /tmp/cchVmFIC.o:supertrees.cpp:(.text+0x260): first defined here
/usr/bin/ld: /tmp/ccuSvnZB.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cchVmFIC.o:supertrees.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status