Language: C++

#include <functional>
#include <algorithm>
#include <iostream>
#include <iomanip>
#include <cstring>
#include <string>
#include <vector>
#include <random>
#include <bitset>
#include <queue>
#include <cmath>
#include <stack>
#include <set>
#include <map>
typedef long long ll;
using namespace std;
const ll MOD = 1000000007LL;

int main() {
    cin.sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n;
    cin >> n;

    queue<int> ready;
    vector<vector<int>> A(n, vector<int>(n));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n - 1; j++) {
            cin >> A[i][j];
            A[i][j]--;
        }
        ready.push(i);
    }
    
    vector<int> ptr(n);
    vector<vector<bool>> state(n, vector<int>(n));
    int ans = 0;
    while (!ready.empty()) {
        ans++;
        queue<int> next_ready;
        while (!ready.empty()) {
            int q = ready.front();
            ready.pop();
            int peer = A[q][ptr[q]];
            state[q][peer] = true;
            if (state[peer][q]) {
                ptr[q]++;
                ptr[peer]++;
                if (ptr[q] < n - 1) next_ready.push(q);
                if (ptr[peer] < n - 1) next_ready.push(peer);
            }
        }

        while (!next_ready.empty()) {
            ready.push(next_ready.front());
            next_ready.pop();
        }
    }

    bool ok = true;
    for (int i = 0; i < n; i++) {
        if (ptr[i] != n-1) {
            ok = false;
            break;
        }
    }

    cout << (ok ? ans : -1) << '\n';
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:38:49: error: no matching function for call to 'std::vector<std::vector<bool> >::vector(int&, std::vector<int>)'
   38 |     vector<vector<bool>> state(n, vector<int>(n));
      |                                                 ^
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_vector.h:707:9: note: candidate: 'template<class _InputIterator, class> std::vector<_Tp, _Alloc>::vector(_InputIterator, _InputIterator, const allocator_type&) [with <template-parameter-2-2> = _InputIterator; _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  707 |         vector(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:707:9: note:   template argument deduction/substitution failed:
a.cc:38:49: note:   deduced conflicting types for parameter '_InputIterator' ('int' and 'std::vector<int>')
   38 |     vector<vector<bool>> state(n, vector<int>(n));
      |                                                 ^
/usr/include/c++/14/bits/stl_vector.h:678:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::initializer_list<_Tp>, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; allocator_type = std::allocator<std::vector<bool> >]'
  678 |       vector(initializer_list<value_type> __l,
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:678:43: note:   no known conversion for argument 1 from 'int' to 'std::initializer_list<std::vector<bool> >'
  678 |       vector(initializer_list<value_type> __l,
      |              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_vector.h:659:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, std::__type_identity_t<_Alloc>&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::__type_identity_t<_Alloc> = std::allocator<std::vector<bool> >]'
  659 |       vector(vector&& __rv, const __type_identity_t<allocator_type>& __m)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:659:23: note:   no known conversion for argument 1 from 'int' to 'std::vector<std::vector<bool> >&&'
  659 |       vector(vector&& __rv, const __type_identity_t<allocator_type>& __m)
      |              ~~~~~~~~~^~~~
/usr/include/c++/14/bits/stl_vector.h:640:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::false_type) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; allocator_type = std::allocator<std::vector<bool> >; std::false_type = std::false_type]'
  640 |       vector(vector&& __rv, const allocator_type& __m, false_type)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:640:7: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_vector.h:635:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&, const allocator_type&, std::true_type) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; allocator_type = std::allocator<std::vector<bool> >; std::true_type = std::true_type]'
  635 |       vector(vector&& __rv, const allocator_type& __m, true_type) noexcept
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:635:7: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_vector.h:624:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&, std::__type_identity_t<_Alloc>&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; std::__type_identity_t<_Alloc> = std::allocator<std::vector<bool> >]'
  624 |       vector(const vector& __x, const __type_identity_t<allocator_type>& __a)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:624:28: note:   no known conversion for argument 1 from 'int' to 'const std::vector<std::vector<bool> >&'
  624 |       vector(const vector& __x, const __type_identity_t<allocator_type>& __a)
      |              ~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_vector.h:620:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>&&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  620 |       vector(vector&&) noexcept = default;
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:620:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_vector.h:601:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  601 |       vector(const vector& __x)
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:601:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_vector.h:569:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(size_type, const value_type&, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; size_type = long unsigned int; value_type = std::vector<bool>; allocator_type = std::allocator<std::vector<bool> >]'
  569 |       vector(size_type __n, const value_type& __value,
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:569:47: note:   no known conversion for argument 2 from 'std::vector<int>' to 'const std::vector<std::vector<bool> >::value_type&' {aka 'const std::vector<bool>&'}
  569 |       vector(size_type __n, const value_type& __value,
      |                             ~~~~~~~~~~~~~~~~~~^~~~~~~
/usr/include/c++/14/bits/stl_vector.h:556:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(size_type, const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; size_type = long unsigned int; allocator_type = std::allocator<std::vector<bool> >]'
  556 |       vector(size_type __n, const allocator_type& __a = allocator_type())
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:556:51: note:   no known conversion for argument 2 from 'std::vector<int>' to 'const std::vector<std::vector<bool> >::allocator_type&' {aka 'const std::allocator<std::vector<bool> >&'}
  556 |       vector(size_type __n, const allocator_type& __a = allocator_type())
      |                             ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:542:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector(const allocator_type&) [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >; allocator_type = std::allocator<std::vector<bool> >]'
  542 |       vector(const allocator_type& __a) _GLIBCXX_NOEXCEPT
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:542:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_vector.h:531:7: note: candidate: 'std::vector<_Tp, _Alloc>::vector() [with _Tp = std::vector<bool>; _Alloc = std::allocator<std::vector<bool> >]'
  531 |       vector() = default;
      |       ^~~~~~
/usr/include/c++/14/bits/stl_vector.h:531:7: note:   candidate expects 0 arguments, 2 provided