Submission #632078

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
6320782022-08-19 11:57:45TimDeeThousands Islands (IOI22_islands)C++17
Compilation error
0 ms0 KiB
#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
int n,m;
vector<int> u,v;
vector<int> vis(1e5+3,0);
vector<int> par(1e5+3,-1);
vector<vector<int>> adj(1e5+3,vector<int>(0));
int cycpt=-1;
vector<int> cyc;
int color=1;
void dfs(int u) {
if (vis[u]==color) {cycpt=u; return;}
vis[u]=color;
for (auto v:adj[u]) {
dfs(v);
if (cycpt!=-1) {
cyc.push_back(u);
return;
}
++color;
}
 
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Compilation message (stderr)

islands.cpp:36:1: error: ambiguating new declaration of 'std::vector<int> find_journey(int, int, std::vector<int>, std::vector<int>)'
   36 | find_journey(int N, int M, vector<int> U, vector<int> V) {
      | ^~~~~~~~~~~~
In file included from islands.cpp:1:
islands.h:4:38: note: old declaration 'std::variant<bool, std::vector<int, std::allocator<int> > > find_journey(int, int, std::vector<int>, std::vector<int>)'
    4 | std::variant<bool, std::vector<int>> find_journey(
      |                                      ^~~~~~~~~~~~
islands.cpp: In function 'std::vector<int> find_journey(int, int, std::vector<int>, std::vector<int>)':
islands.cpp:155:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  155 |         for (int i=0; i<path.size(); ++i) r.push_back(path[i]);
      |                       ~^~~~~~~~~~~~
islands.cpp:50:45: warning: control reaches end of non-void function [-Wreturn-type]
   50 |   vector<vector<int>>__p2(n,vector<int>(n,0));
      |                                             ^