Compilare: main.cpp: In function 'void KMP()': main.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i=1;i<A.size();i++){ | ~^~~~~~~~~ main.cpp: In function 'int32_t main()': main.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for(int i=0;i<A.size();i++){ | ~^~~~~~~~~ main.cpp:31:9: warning: unused variable 'm' [-Wunused-variable] 31 | int m = B.size(); | ^