Compilare: main.cpp: In function 'void add_string(std::string, int)': main.cpp:27:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int j=0; j<s2.size(); j++) | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:97:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Aho_Corasick>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for (int j=0; j<V.size(); j++) | ~^~~~~~~~~ main.cpp:137:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 137 | for (int j=0; j<s.size(); j++) | ~^~~~~~~~~ main.cpp:149:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 149 | for (int jj=0;jj<V[copie].indici.size();jj++) | ~~^~~~~~~~~~~~~~~~~~~~~~~