Submission #848774

#	Time	Username	Problem	Language	Result	Execution time	Memory
848774		emad234	Longest Trip (IOI23_longesttrip)	C++17	Compilation error	0 ms	0 KiB

longesttrip

#include <bits/stdc++.h>
#define all(v) ((v).begin(),(v).end())
#define ll long long
#define F first
#define S second
const ll mod = 1e9 + 7;
const ll mxN = 2e5 + 1;
using namespace std;
int Search(int x, vector<int>b){
  if(b.size() == 1) return b[0];
  vector<int>a = {x};
  vector<int> v,v1;
  for(int i = 0;i < b.size() / 2;i++) v.push_back(b[i]);
  for(int i = b.size() / 2;i < b.size();i++) v1.push_back(b[i]);
  if(are_connected(a,v)) return Search(x,v);
  else if(are_connected(a,v1)) return Search(x,v1);
  return -1;
}
bool vis[mxN];
vector<int> longest_trip(int N, int D)
{
  vector<int>ans = {0};
  vis[0] = 1;
  while(ans.size() < N){
    vector<int>b;
    for(int i = 0;i < N;i++){
      if(!vis[i]) b.push_back(i);
    }
    int x = Search(ans[ans.size() - 1],b);
    ans.push_back(x);
    vis[x] = 1;
  }
  return ans;
}

Compilation message (stderr)

longesttrip.cpp: In function 'int Search(int, std::vector<int>)':
longesttrip.cpp:13:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |   for(int i = 0;i < b.size() / 2;i++) v.push_back(b[i]);
      |                 ~~^~~~~~~~~~~~~~
longesttrip.cpp:14:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |   for(int i = b.size() / 2;i < b.size();i++) v1.push_back(b[i]);
      |                            ~~^~~~~~~~~~
longesttrip.cpp:15:6: error: 'are_connected' was not declared in this scope
   15 |   if(are_connected(a,v)) return Search(x,v);
      |      ^~~~~~~~~~~~~
longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:24:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |   while(ans.size() < N){
      |         ~~~~~~~~~~~^~~