rail.cpp: In function 'void findLocation(int, int, int*, int*)':
rail.cpp:68:35: error: no match for 'operator=' (operand types are 'pii' {aka 'std::pair<int, int>'} and 'int')
68 | mn = min({getDistance(0,i),i},mn);
| ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
from /usr/include/c++/10/bits/char_traits.h:39,
from /usr/include/c++/10/ios:40,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from rail.cpp:17:
/usr/include/c++/10/bits/stl_pair.h:390:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type) [with _T1 = int; _T2 = int; typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type = const std::pair<int, int>&]'
390 | operator=(typename conditional<
| ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:393:41: note: no known conversion for argument 1 from 'int' to 'std::conditional<true, const std::pair<int, int>&, const std::__nonesuch&>::type' {aka 'const std::pair<int, int>&'}
390 | operator=(typename conditional<
| ~~~~~~~~~~~~~~~~~~~~~
391 | __and_<is_copy_assignable<_T1>,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
392 | is_copy_assignable<_T2>>::value,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
393 | const pair&, const __nonesuch&>::type __p)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_pair.h:401:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type) [with _T1 = int; _T2 = int; typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type = std::pair<int, int>&&]'
401 | operator=(typename conditional<
| ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:404:31: note: no known conversion for argument 1 from 'int' to 'std::conditional<true, std::pair<int, int>&&, std::__nonesuch&&>::type' {aka 'std::pair<int, int>&&'}
401 | operator=(typename conditional<
| ~~~~~~~~~~~~~~~~~~~~~
402 | __and_<is_move_assignable<_T1>,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
403 | is_move_assignable<_T2>>::value,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
404 | pair&&, __nonesuch&&>::type __p)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_pair.h:418:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, const _U1&>, std::is_assignable<_T2&, const _U2&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(const std::pair<_U1, _U2>&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = int]'
418 | operator=(const pair<_U1, _U2>& __p)
| ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:418:2: note: template argument deduction/substitution failed:
rail.cpp:68:35: note: mismatched types 'const std::pair<_T1, _T2>' and 'int'
68 | mn = min({getDistance(0,i),i},mn);
| ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
from /usr/include/c++/10/bits/char_traits.h:39,
from /usr/include/c++/10/ios:40,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from rail.cpp:17:
/usr/include/c++/10/bits/stl_pair.h:430:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, _U1&&>, std::is_assignable<_T2&, _U2&&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(std::pair<_U1, _U2>&&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = int]'
430 | operator=(pair<_U1, _U2>&& __p)
| ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:430:2: note: template argument deduction/substitution failed:
rail.cpp:68:35: note: mismatched types 'std::pair<_T1, _T2>' and 'int'
68 | mn = min({getDistance(0,i),i},mn);
| ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:71,
from /usr/include/c++/10/bits/char_traits.h:39,
from /usr/include/c++/10/ios:40,
from /usr/include/c++/10/istream:38,
from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from rail.cpp:17:
/usr/include/c++/10/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = const int*; _Iterator2 = const int*; _Compare = std::pair<int, int>]':
/usr/include/c++/10/bits/stl_algo.h:5636:12: required from 'constexpr _ForwardIterator std::__min_element(_ForwardIterator, _ForwardIterator, _Compare) [with _ForwardIterator = const int*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<std::pair<int, int> >]'
/usr/include/c++/10/bits/stl_algo.h:5687:43: required from 'constexpr _FIter std::min_element(_FIter, _FIter, _Compare) [with _FIter = const int*; _Compare = std::pair<int, int>]'
/usr/include/c++/10/bits/stl_algo.h:3475:31: required from 'constexpr _Tp std::min(std::initializer_list<_Tp>, _Compare) [with _Tp = int; _Compare = std::pair<int, int>]'
rail.cpp:68:35: required from here
/usr/include/c++/10/bits/predefined_ops.h:156:30: error: no match for call to '(std::pair<int, int>) (const int&, const int&)'
156 | { return bool(_M_comp(*__it1, *__it2)); }
| ~~~~~~~^~~~~~~~~~~~~~~~