Compilare: user.cpp: In function ‘int main()’: user.cpp:23:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=2; i<P.size(); i++) ^ user.cpp:56:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=2; i<T.size(); i++) ^ user.cpp:91:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=T.size()-1; i>=T.size()-M; i--) ^ user.cpp:92:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i+N-1<T.size()) ^