Compilare: main.cpp: In function 'std::__cxx11::string ParseStr(int&)': main.cpp:40:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( idx < s.size() && ( Maj( s[idx] ) || Cif( s[idx] ) ) ) { ~~~~^~~~~~~~~~ main.cpp: In function 'std::__cxx11::string Parsestr(int&)': main.cpp:50:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( idx < s.size() && ( Min( s[idx] ) || Cif( s[idx] ) ) ) { ~~~~^~~~~~~~~~ main.cpp: In function 'void Do()': main.cpp:60:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < s.size(); ++i ) { ~~^~~~~~~~~~ main.cpp:72:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < curr.size(); ++j ) { ~~^~~~~~~~~~~~~ main.cpp:93:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < paths.size(); ++i ) { ~~^~~~~~~~~~~~~~ main.cpp:94:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < paths[i].f.size(); ++j ) ~~^~~~~~~~~~~~~~~~~~~