Compilare: main.cpp: In function 'int getz(std::__cxx11::string, int*, int)': main.cpp:11:15: warning: variable 'k' set but not used [-Wunused-but-set-variable] int L, R, k; ^ main.cpp: In function 'void str(std::__cxx11::string, std::__cxx11::string)': main.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (Z[i] == sch.length()) ~~~~~^~~~~~~~~~~~~~~