#include <iostream> #include <algorithm> #include <vector> #include "supertrees.h" using namespace std; vector<vector<int>> c; vector<vector<int>> adj; int n; int construct(vector<vector<int>> c1){ c = c1; n = c[0].size(); adj.assign(n, vector<int>(n, 0)); for(int i = 0; i<n; i++) c[i].push_back(i); sort(c.begin(), c.end()); int prev = 0; int same = 0; // vector<int> s; vector<int> cycleNodes; cycleNodes.push_back(0); for(int i = 1; i<n; i++){ if(!c[i][0] != !c[prev][0]){ if(cycleNodes.size() > 1) adj[c[cycleNodes[0]][n]][c[cycleNodes[cycleNodes.size()-1]][n]] = adj[c[cycleNodes[cycleNodes.size()-1]][n]][c[cycleNodes[0]][n]] = 1; cycleNodes.clear(); prev = same = i; cycleNodes.push_back(i); continue; } adj[c[same][n]][c[i][n]] = adj[c[i][n]][c[same][n]] = 1; int s = 1; for(int j = 0; j<n; j++) if(c[i][j] != c[same][j]) s = 0; if(!s){ cycleNodes.push_back(i); same = i; } } if(cycleNodes.size() > 1) adj[c[cycleNodes[0]][n]][c[cycleNodes[cycleNodes.size()-1]][n]] = adj[c[cycleNodes[cycleNodes.size()-1]][n]][c[cycleNodes[0]][n]] = 1; build(adj); return 1; } int main(void){ freopen("input.txt", "r", stdin); int n; cin>>n; vector<vector<int>> c1; c1.assign(n, vector<int>(n, 0)); for(int i = 0; i<n; i++){ for(int j = 0; j<n; j++) cin>>c1[i][j]; } construct(c1); }

supertrees.cpp: In function 'int main()':
supertrees.cpp:57:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccdGlhmY.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc5TjkCO.o:supertrees.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status