Submission #1296881

#TimeUsernameProblemLanguageResultExecution timeMemory
1296881nataliaaWorld Map (IOI25_worldmap)C++20
Compilation error
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; vector<int> ans; vector<int> v[41]; rec(int u, int w) { ans.push_back(w); for(int i = 0; i < v[w].size(); i++) { if(v[w][i]!=u){ rec(w, v[w[i]]); ans.push_back(v[w[i]]); } } } vector<vector<int>> create_map(int N, int M, vector<int> A, vector<int> B){ for(int i = 0; i < M; i++) { v[A[i]].push_back(B[i]); v[B[i]].push_back(A[i]); } vector<vector<int>> ans1; for(int i = 0; i < ans.size(); i++) { ans1[i] = ans; } return ans1; }

Compilation message (stderr)

worldmap.cpp:5:1: error: ISO C++ forbids declaration of 'rec' with no type [-fpermissive]
    5 | rec(int u, int w) {
      | ^~~
worldmap.cpp: In function 'int rec(int, int)':
worldmap.cpp:9:23: error: invalid types 'int[int]' for array subscript
    9 |             rec(w, v[w[i]]);
      |                       ^
worldmap.cpp:10:30: error: invalid types 'int[int]' for array subscript
   10 |             ans.push_back(v[w[i]]);
      |                              ^
worldmap.cpp:13:1: warning: no return statement in function returning non-void [-Wreturn-type]
   13 | }
      | ^