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View Compilation Error

0_0_39185221_26087.cpp: In function 'void solve()':
0_0_39185221_26087.cpp:70:16: error: 'u' was not declared in this scope
   70 |         cin >> u >> v;
      |                ^
0_0_39185221_26087.cpp:70:21: error: 'v' was not declared in this scope
   70 |         cin >> u >> v;
      |                     ^
0_0_39185221_26087.cpp:74:17: error: 'e' was not declared in this scope; did you mean 'std::numbers::e'?
   74 |                 e[mp[v]].push_back(mp[u]);
      |                 ^
      |                 std::numbers::e
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/max_size_type.h:37,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/ranges_base.h:39,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/ranges_algobase.h:38,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/ranges_algo.h:38,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/algorithm:63,
                 from .\stdc++.h:51:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/numbers:122:27: note: 'std::numbers::e' declared here
  122 |   inline constexpr double e = e_v<double>;
      |                           ^


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