Compilare: main.cpp: In function 'int main()': main.cpp:38:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (i = 0; i < vsol.size(); i++) | ~~^~~~~~~~~~~~~ main.cpp:43:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (i = 0; i < vsol1.size(); i++) | ~~^~~~~~~~~~~~~~