answer.code: In function ‘auto& mul(auto:21&&, auto:22)’:
answer.code:11:47: error: ‘uint64_t’ was not declared in this scope
   11 | auto& mul(auto&& a, auto b) { return a = a * (uint64_t)b % mod; }
      |                                               ^~~~~~~~
answer.code:5:1: note: ‘uint64_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
    4 | #include <vector>
  +++ |+#include <cstdint>
    5 | 
answer.code:11:56: error: expected ‘;’ before ‘b’
   11 | auto& mul(auto&& a, auto b) { return a = a * (uint64_t)b % mod; }
      |                                                        ^
      |                                                        ;
answer.code: In function ‘bool isgr(auto:25&, int, int)’:
answer.code:73:3: error: ‘uint64_t’ was not declared in this scope
   73 |   uint64_t vis = 1ull << a;
      |   ^~~~~~~~
answer.code:73:3: note: ‘uint64_t’ is defined in header ‘<cstdint>’; did you forget to ‘#include <cstdint>’?
answer.code:75:30: error: ‘vis’ was not declared in this scope
   75 |   for (auto [x, y]: gr) if ((vis >> x & 1) && !(vis >> y & 1)) ch = 1, vis |= 1ull << y;
      |                              ^~~
answer.code:76:10: error: ‘vis’ was not declared in this scope
   76 |   return vis >> b & 1;
      |          ^~~
answer.code: In instantiation of ‘int solve(auto:24&, DSU) [with auto:24 = std::vector<std::array<int, 2> >]’:
answer.code:80:50:   required from ‘void solve(auto:26, DSU, int) [with auto:26 = std::vector<std::array<int, 2> >]’
answer.code:106:8:   required from here
answer.code:61:93: warning: narrowing conversion of ‘id.solve<std::vector<std::array<int, 2> > >(std::vector<std::array<int, 2> >&, DSU)::<lambda(int, int)>(c, a)’ from ‘long int’ to ‘int’ [-Wnarrowing]
   61 |   for (auto [a, b]: gr) if (max(a, b) > 9) { int c = weak(max(a, b)); compe[c].push_back({id(c, a), id(c, b)}); }
      |                                                                                           ~~^~~~~~
answer.code:61:103: warning: narrowing conversion of ‘id.solve<std::vector<std::array<int, 2> > >(std::vector<std::array<int, 2> >&, DSU)::<lambda(int, int)>(c, b)’ from ‘long int’ to ‘int’ [-Wnarrowing]
   61 |   for (auto [a, b]: gr) if (max(a, b) > 9) { int c = weak(max(a, b)); compe[c].push_back({id(c, a), id(c, b)}); }
      |                                                                                                     ~~^~~~~~