fortune_telling2.cpp: In function 'int main()':
fortune_telling2.cpp:18:25: error: no matching function for call to 'std::vector<long long int>::push_back(<brace-enclosed initializer list>)'
18 | cards.push_back({a, b});
| ^
In file included from /usr/include/c++/10/vector:67,
from /usr/include/c++/10/functional:62,
from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10/algorithm:74,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
from fortune_telling2.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:1187:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = long long int; _Alloc = std::allocator<long long int>; std::vector<_Tp, _Alloc>::value_type = long long int]'
1187 | push_back(const value_type& __x)
| ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1187:35: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const long long int&'}
1187 | push_back(const value_type& __x)
| ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_vector.h:1203:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(std::vector<_Tp, _Alloc>::value_type&&) [with _Tp = long long int; _Alloc = std::allocator<long long int>; std::vector<_Tp, _Alloc>::value_type = long long int]'
1203 | push_back(value_type&& __x)
| ^~~~~~~~~
/usr/include/c++/10/bits/stl_vector.h:1203:30: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<long long int>::value_type&&' {aka 'long long int&&'}
1203 | push_back(value_type&& __x)
| ~~~~~~~~~~~~~^~~
fortune_telling2.cpp:28:23: error: request for member 'first' in 'cards.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'}
28 | curr_num = cards[i].first;
| ^~~~~
fortune_telling2.cpp:31:30: error: request for member 'first' in 'cards.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'}
31 | if (curr_num == cards[i].first)
| ^~~~~
fortune_telling2.cpp:32:26: error: request for member 'second' in 'cards.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'}
32 | curr_num = cards[i].second;
| ^~~~~~
fortune_telling2.cpp:33:35: error: request for member 'second' in 'cards.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'}
33 | else if (curr_num == cards[i].second)
| ^~~~~~
fortune_telling2.cpp:34:26: error: request for member 'first' in 'cards.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'}
34 | curr_num = cards[i].first;
| ^~~~~