Compilare: user.cpp: In function ‘int main(int, const char**)’: user.cpp:74:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < min( ll.size(), rl.size() ); i ++ ) ^ user.cpp:78:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = ll.size(); i < rl.size(); i ++ ) ^ user.cpp:81:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = rl.size(); i < ll.size(); i ++ ) ^ user.cpp:85:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < sol.size(); i ++ ) ^