Compilare: main.cpp: In function 'int Lis(std::vector<std::pair<int, int> >)': main.cpp:30:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v.size(); ++i ) { ~~^~~~~~~~~~ main.cpp: In function 'int Do(std::vector<int>)': main.cpp:50:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < aux.size(); ++i ) { ~~^~~~~~~~~~~~ main.cpp:62:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < data.size(); ++i ) { ~~^~~~~~~~~~~~~