Compilare: main.cpp: In function 'int main()': main.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(i = 0; i < a[X].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp:44:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(i = 0; i < ans.size(); i++) | ~~^~~~~~~~~~~~