python

def border(m):
    if m==1:
        print('+')
    else:
        print(m*"+-"+(m%2)*"+")
def row(m,n):
    if m==1:
        print('|')
    else:
        print('| '*m+'|')
n,m=map(int,input().split())
for i in range(n):
    border(m)
    row(m, n)
border(m)