Compilare: main.cpp: In function 'int main()': main.cpp:78:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::vector<int>, std::bitset<1003> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:81:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for (int j = 0; j < sol[i].first.size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~