# ovo je napisao Igor
print("Ahoj Petre")
# ovo je napisao Petar
print("Ahoj Marko")

x = 5
y = "John"
print(x)
print(y)

#ovo je napisao Dusan 
a = 10
print(a)
a = 12
print(a)
b = a + x
print (b)
x = 9
x = "Jack"
print(x)

print(a+5)
# print ("x+5=?")
# print(x+5)

print("7*12")
print(7*12)



