Compilare: main.cpp: In function 'void Read()': main.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for( int j = 0; j < line.size(); ++j ) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void Do()': main.cpp:52:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for( int i = 0; i < Drg.size(); ++i ) { | ~~^~~~~~~~~~~~