Compilare: main.cpp: In function 'int nextB(std::__cxx11::string&, int)': main.cpp:22:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p == -1 || p >= s.length()) ~~^~~~~~~~~~~~~ main.cpp:24:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p < s.length() && s[p] == '2') ~~^~~~~~~~~~~~ main.cpp:26:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p >= s.length() || s[p] == '3') ~~^~~~~~~~~~~~~ main.cpp:28:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p+4 >= s.length()) ~~~~^~~~~~~~~~~~~ main.cpp: In function 'int nextC(std::__cxx11::string&, int)': main.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p == -1 || p >= s.length()) ~~^~~~~~~~~~~~~ main.cpp:40:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (p+2 >= s.length()) ~~~~^~~~~~~~~~~~~