Compilare: main.cpp: In function 'void Z(std::__cxx11::string)': main.cpp:10:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1,l=0,r=0;i<s.size();i++) ~^~~~~~~~~ main.cpp:16:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i+z[i]<s.size() && s[i+z[i]]==s[z[i]]) ~~~~~~^~~~~~~~~ main.cpp: In function 'void sufix(std::__cxx11::string)': main.cpp:29:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1,l=0,r=0;i<s.size();i++) ~^~~~~~~~~ main.cpp:35:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i+suf[i]<s.size() && s[i+suf[i]]==s[suf[i]]) ~~~~~~~~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=b.size()+1;i<s.size();i++) ~^~~~~~~~~ main.cpp:67:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=b.size()/2;i++) ~^~~~~~~~~~~~