답안 #1016425

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1016425	2024-07-08T05:04:16 Z	dondurma	CSS (COI14_css)	C++17	컴파일 오류	0 ms	0 KB

css

#include <bits/stdc++.h>

using namespace std;

struct HTMLelement {
    string id;
    set<int> classes;
    vector<int> children;
    HTMLelement() {}
    HTMLelement(char *name):
        id(name) {}

    void add_child(int child_id) {
        children.push_back(child_id);
    }

    void add_class(char *str) {
        int hash = 0;
        for(char *ptr = str; *ptr; ++ptr) {
            hash = hash * 71 + *ptr - 'a' + 1;
        }
        classes.insert(hash);
    }
};

struct SelectorElement {
    int type;
    vector<int> classes;
    SelectorElement(int type):
        type(type) {}

    void add_class(char *str) {
        int hash = 0;
        for(char *ptr = str; *ptr; ++ptr) {
            hash = hash * 71 + *ptr - 'a' + 1;
        }
        classes.push_back(hash);
    }

    bool check(const HTMLelement &E) {
        for(auto cls : classes)
            if(E.classes.find(cls) == E.classes.end())
                return 0;
        return 1;
    }
};

int input(string s) {
    int x = 0;
    for (auto c : s) x = x * 10 + c - '0';
    return x;
}

vector<HTMLelement> read_document() {
    string s;
    getline(cin, s);
    int N = input(s);

    stack<int> ancestors;

    vector<HTMLelement> tree;
    tree.push_back(HTMLelement());
    ancestors.push(0);

    for(int i = 0; i < N; ++i) {
        getline(cin, s);
        if(s[1] == '/') {
            ancestors.pop();
        } else {
            char name[31];
            int idp = s.find("id='") + 4;
            if (s.find("id='") == s.end()) assert(0);
            for (int j = 0;;j++) {
                // if (j + idp >= s.size()) assert(0);
                if (s[j + idp] == 39) break;
                name[j] = s[j + idp];
            }

            tree.push_back(HTMLelement(name));
            tree[ancestors.top()].add_child(tree.size() - 1);
            ancestors.push(tree.size() - 1);

            int j = s.find("class='") + 7, num = 0;
            while(true) {
                char class_name[31];
                memset(class_name, 0, sizeof class_name);
                bool f = 0;
                num = 0;
                while (true) {
                    // if (j >= s.size()) assert(0);
                    if (s[j] == ' ') {
                        j++;
                        break;
                    }
                    if (s[j] == 39) {
                        f = 1;
                        break;
                    }
                    // if (num == 31) assert(0);
                    class_name[num++] = s[j]; 
                    j++;
                }
                tree.back().add_class(class_name);
                if (f) break;
            }
        }
    }

    return tree;
}

vector<SelectorElement> read_selector() {
    vector<SelectorElement> sel;

    string s; 
    getline(cin, s);
    
    int num = 0, j = 0;
    while (j < s.size()) {
        if (s[j] == '>') {
            sel.push_back(SelectorElement(0));
            j += 2;
        } else {
            if (j == 0 || (s[j - 1] == ' ' && s[j - 2] != '>')) sel.push_back(SelectorElement(1));
            sel.push_back(SelectorElement(2));
            num = 0;
            char class_name[21];
            memset(class_name, 0, sizeof class_name);
            j++;
            while (j < s.size()) {
                if (s[j] == ' ') {
                    break;
                }
                // if (num == 21) {
                //     assert(0);
                // }
                class_name[num++] = s[j];
                if (j == s.size() - 1 || s[j + 1] == '.') break;
                j++;
            }
            sel.back().add_class(class_name);
            j++;
        }
    }

    return sel;
}

vector<HTMLelement> DocumentTree;
vector<SelectorElement> Selector;
bool visited[2][5010][5010];

void dfs(int jump, int node, int pos, vector<int> &ans) {
    if(visited[jump][node][pos]) return;
    visited[jump][node][pos] = 1;

    if(pos == Selector.size()) {
        if(!jump) ans.push_back(node);
        return;
    }

    if(Selector[pos].type == 0) {
        for(auto child : DocumentTree[node].children)
            dfs(0, child, pos + 1, ans);
    }

    if(Selector[pos].type == 1) {
        if(jump) dfs(0, node, pos + 1, ans);
        for(auto child : DocumentTree[node].children)
            dfs(1, child, pos, ans);
    }

    if(Selector[pos].type == 2) {
        if(!Selector[pos].check(DocumentTree[node])) return;
        dfs(0, node, pos + 1, ans);
    }
}   

int main() {
    
    DocumentTree = read_document();

    string s;
    getline(cin, s);
    int M = input(s);
    for(int i = 0; i < M; ++i) {
        Selector = read_selector();
        memset(visited, 0, sizeof visited);
        vector<int> ans;

        dfs(0, 0, 0, ans);

        printf("%d ", (int)ans.size());
        sort(ans.begin(), ans.end());
        for(auto id : ans) printf("%s ", DocumentTree[id].id.c_str());
        printf("\n");
    }

    return 0;

}

Compilation message

css.cpp: In function 'std::vector<HTMLelement> read_document()':
css.cpp:72:32: error: no match for 'operator==' (operand types are 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'std::__cxx11::basic_string<char>::iterator')
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                 ~~~~~~~~~~~~~~ ^~ ~~~~~~~
      |                       |                |
      |                       |                std::__cxx11::basic_string<char>::iterator
      |                       std::__cxx11::basic_string<char>::size_type {aka long unsigned int}
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:1035:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
 1035 |     operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1035:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:1131:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)'
 1131 |     operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1131:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:1206:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1206 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1206:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:1298:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
 1298 |     operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1298:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   'std::__cxx11::basic_string<char>::iterator' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:1373:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1373 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1373:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:1466:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
 1466 |     operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1466:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   'std::__cxx11::basic_string<char>::iterator' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:1545:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1545 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1545:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from css.cpp:1:
/usr/include/c++/10/bits/regex.h:2101:5: note: candidate: 'template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator==(const std::__cxx11::match_results<_BiIter, _Alloc>&, const std::__cxx11::match_results<_BiIter, _Alloc>&)'
 2101 |     operator==(const match_results<_Bi_iter, _Alloc>& __m1,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:2101:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::__cxx11::match_results<_BiIter, _Alloc>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from css.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:466:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator==(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
  466 |     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:466:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::pair<_T1, _T2>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from css.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:360:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
  360 |     operator==(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:360:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from css.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:398:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
  398 |     operator==(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:398:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from css.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1427:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
 1427 |     operator==(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1427:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from css.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1495:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
 1495 |     operator==(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1495:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/iosfwd:40,
                 from /usr/include/c++/10/ios:38,
                 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 css.cpp:1:
/usr/include/c++/10/bits/postypes.h:222:5: note: candidate: 'template<class _StateT> bool std::operator==(const std::fpos<_StateT>&, const std::fpos<_StateT>&)'
  222 |     operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/postypes.h:222:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::fpos<_StateT>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/string:41,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 css.cpp:1:
/usr/include/c++/10/bits/allocator.h:206:5: note: candidate: 'template<class _T1, class _T2> bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_T2>&)'
  206 |     operator==(const allocator<_T1>&, const allocator<_T2>&)
      |     ^~~~~~~~
/usr/include/c++/10/bits/allocator.h:206:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'const std::allocator<_CharT>' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 css.cpp:1:
/usr/include/c++/10/string_view:490:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator==(std::basic_string_view<_CharT, _Traits>, std::basic_string_view<_CharT, _Traits>)'
  490 |     operator==(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:490:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'long unsigned int'
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 css.cpp:1:
/usr/include/c++/10/string_view:496:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator==(std::basic_string_view<_CharT, _Traits>, std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >)'
  496 |     operator==(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:496:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'long unsigned int'
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/bits/basic_string.h:48,
                 from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 css.cpp:1:
/usr/include/c++/10/string_view:519:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator==(std::__type_identity_t<std::basic_string_view<_CharT, _Traits> >, std::basic_string_view<_CharT, _Traits>)'
  519 |     operator==(__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/10/string_view:519:5: note:   template argument deduction/substitution failed:
css.cpp:72:41: note:   '__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   72 |             if (s.find("id='") == s.end()) assert(0);
      |                                         ^
In file included from /usr/include/c++/10/string:55,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 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 /va