IO\pa.in
..\pa.out
..\pb.in
..\pb.out
..\pc.in
..\pc.out
..\pd.in
..\pd.out
..\pe.in
..\pe.out
..\pf.in
..\pf.out
..\pg.in
..\pg.out
..\ph.in
..\ph.out
..\pi.in
..\pi.out
..\pj.in
..\pj.out