Compilare: main.cpp: In function 'int edit_distance(int, int)': main.cpp:14:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i = 0; i<v[a].size(); i++) | ~^~~~~~~~~~~~ main.cpp:19:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i = 0; i<v[b].size(); i++) | ~^~~~~~~~~~~~ main.cpp:24:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i = 1; i<v[a].size(); i++) | ~^~~~~~~~~~~~ main.cpp:26:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int j = 1; j<v[b].size(); j++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:51:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int i = 0; i<s.size(); i++) | ~^~~~~~~~~ main.cpp:58:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | while(j < s.size() && s[j] >= 'a' && s[j] <= 'z') | ~~^~~~~~~~~~