Compilare: user.cpp: In function ‘void kmp()’: user.cpp:11:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<s.size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size();++i) ^ user.cpp:33:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<V.size();++i) ^