Compilare: main.cpp: In function 'int kcomp(std::string, std::string)': main.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i=0; i<A.size(); i++) | ~^~~~~~~~~ main.cpp:27:19: 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 i=0; i<=B.size(); i++) | ~^~~~~~~~~~ main.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i=1; i<=A.size(); i++) | ~^~~~~~~~~~ main.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int j=1; j<=B.size(); j++) | ~^~~~~~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:47:13: warning: unused variable 'sum' [-Wunused-variable] 47 | int sum=0; | ^~~