Compilare: main.cpp: In function 'LL cod3(std::__cxx11::string)': main.cpp:23:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (LL i = 0; i < s.length(); i++) ~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (LL i = l; i < text.length(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:55:9: warning: unused variable 'L' [-Wunused-variable] int L = text.length(); ^