Compilare: main.cpp: In function 'void init()': main.cpp:27:24: 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+2<sc.size();j++){ | ~~~^~~~~~~~~~ main.cpp:34:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(int i=0;i+2<so.size();i++){ | ~~~^~~~~~~~~~