Submission #1005946

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005946		thelegendary08	Longest Trip (IOI23_longesttrip)	C++17	15 / 100	875 ms	596 KiB

longesttrip

#include "longesttrip.h"

#include<bits/stdc++.h>
#define f0r(i,n) for(int i = 0;i<n;i++)
#define FOR(i,k,n) for(int i = k;i<n;i++)
#define pb push_back
#define vi vector<int>
#define ll long long int
using namespace std;

std::vector<int> longest_trip(int N, int D)
{
	vector<vector<bool>> con(N, vector<bool>(N, false));
	f0r(i, N){
		FOR(j, i+1, N){
			con[i][j] = are_connected({i}, {j});
			con[j][i] = con[i][j];
		}
	}
	vi c1 = {0};
	vi c2 = {1};
	FOR(i, 2, N){
		if(con[c1[c1.size()-1]][i])c1.pb(i);
		else c2.pb(i);
	}
	if(c1.size() == 1)swap(c1, c2);
	vi ans;
	if(con[c1[0]][c2[0]]){
		for(int i = c2.size() - 1; i>=0; i--)ans.pb(c2[i]);
		f0r(i, c1.size())ans.pb(c1[i]);
	}
	else{
		f0r(i,c1.size())ans.pb(c1[i]);
		f0r(i, c2.size())ans.pb(c2[i]);
	}
	return ans;
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:4:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define f0r(i,n) for(int i = 0;i<n;i++)
......
   30 |   f0r(i, c1.size())ans.pb(c1[i]);
      |       ~~~~~~~~~~~~               
longesttrip.cpp:30:3: note: in expansion of macro 'f0r'
   30 |   f0r(i, c1.size())ans.pb(c1[i]);
      |   ^~~
longesttrip.cpp:4:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define f0r(i,n) for(int i = 0;i<n;i++)
......
   33 |   f0r(i,c1.size())ans.pb(c1[i]);
      |       ~~~~~~~~~~~                
longesttrip.cpp:33:3: note: in expansion of macro 'f0r'
   33 |   f0r(i,c1.size())ans.pb(c1[i]);
      |   ^~~
longesttrip.cpp:4:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define f0r(i,n) for(int i = 0;i<n;i++)
......
   34 |   f0r(i, c2.size())ans.pb(c2[i]);
      |       ~~~~~~~~~~~~               
longesttrip.cpp:34:3: note: in expansion of macro 'f0r'
   34 |   f0r(i, c2.size())ans.pb(c2[i]);
      |   ^~~

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 25
• Subtask 4: 0 / 60