dango3.cpp: In function 'void Solve(int, int)':
dango3.cpp:48:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
48 | if (active.size() == n - 1)
| ~~~~~~~~~~~~~~^~~~~~~~
dango3.cpp:50:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
50 | for (int j = 0; j < active.size(); ++j)
| ~~^~~~~~~~~~~~~~~
dango3.cpp:58:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
58 | for (int j = 0; j < active.size(); ++j)
| ~~^~~~~~~~~~~~~~~
dango3.cpp:62:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
62 | for (int k = 0; k < active.size(); ++k)
| ~~^~~~~~~~~~~~~~~
dango3.cpp:75:35: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
75 | if (ans[i].size() == n)
| ~~~~~~~~~~~~~~^~~~