Compilare: main.cpp: In function 'int main()': main.cpp:50:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (i = 0; i < ans2.size() - 1; ++i) | ~~^~~~~~~~~~~~~~~~~ main.cpp:56:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (i = aux + 1; i < ans1.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp:60:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for (i = aux + 1; i < ans2.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp:45:24: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] 45 | start = alb[start]; | ~~~~~~~~~^