▎ 摘　　要

We consider massless Dirac fermions in a graphene monolayer in the ballistic limit, subject to both a perpendicular magnetic field B and a proximity-induced pairing gap Delta. When the chemical potential is at the Dirac point, our exact solution of the Bogoliubov-de Gennes equation yields Delta-independent relativistic Landau levels. Since eigenstates depend on Delta, many observables nevertheless are sensitive to pairing, e. g., the local density of states or the edge state spectrum. By solving the problem with an additional in-plane electric field, we also discuss how snake states are influenced by a pairing gap.