Compilare: user.cpp: In function ‘int main()’: user.cpp:59:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( long i = 0; i < v.size ( ); i++ ) ^ user.cpp:63:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( long i = 0; i < v.size ( ); i++ ) { ^ user.cpp:69:34: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘std::vector<valiPair>::size_type {aka unsigned int}’ [-Wformat=] printf ( "%ld\n", q.size ( ) ); ^