Compilare: main.cpp: In function 'void solve()': main.cpp:70:39: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 70 | if (unu_l.size() + unu_c.size() < ans) { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ main.cpp:73:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (int i = 0; i < unu_l.size(); ++i) | ~~^~~~~~~~~~~~~~ main.cpp:75:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for (int i = 0; i < unu_c.size(); ++i) | ~~^~~~~~~~~~~~~~