Submission #839807

#	Time	Username	Problem	Language	Result	Execution time	Memory
839807		AdamGS	Longest Trip (IOI23_longesttrip)	C++17	Compilation error	0 ms	0 KiB

longesttrip

#include "longesttrip.h"
#include<bits/stdc++.h>
using namespace std;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
vector<int>longest_trip(int n, int d) {
  vector<int>A, B;
  A.pb(0);
  for(int i=1; i<n; ++i) {
    vector<int>X, Y;
    X.pb(A.back());
    Y.pb(i);
    if(are_connected(X, Y)) A.pb(i);
    else B.pb(i);
    X.clear();
    Y.clear();
    X.pb(A.back());
    Y.pb(B.back());
    if(are_connected(X, Y)) while(Y.size()>0) {
      X.pb(Y.back());
      Y.pop_back();
    }
  }
  if(Y.size()>X.size()) swap(X, Y);
  return X;
}

Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:27:6: error: 'Y' was not declared in this scope
   27 |   if(Y.size()>X.size()) swap(X, Y);
      |      ^
longesttrip.cpp:27:15: error: 'X' was not declared in this scope
   27 |   if(Y.size()>X.size()) swap(X, Y);
      |               ^
longesttrip.cpp:28:10: error: 'X' was not declared in this scope
   28 |   return X;
      |          ^