prog.cpp:3:1: error: expected ‘;’ after class definition
prog.cpp:5:5: error: ‘vector’ in namespace ‘std’ does not name a type
prog.cpp:6:1: error: expected ‘;’ after class definition
prog.cpp:8:5: error: ‘vector’ in namespace ‘std’ does not name a type
prog.cpp:9:1: error: expected ‘;’ after class definition