n = int(input("num"))
print("* " )
print("* ", end="")
print("* ", end="")
print("@ ", end="")
print("\n")
for i in range(n-2, 0, -1):
m = n-1-i
for j in range(i):
print("* " , end="")
print("@ ", end="")
for k in range(m):
print("* ",end="")
print("\n")
print(" ", end="")
print(" ", end="")
print("@ ", end="")
print("* ", end="")
print("* ")
for m in range(5):
if m<4:
print(" ", end="")
else:
print("* ")