so1 = int(input("nhap vao so dau tien :"))
so2 = int(input("nhap vao so thu hai : "))
# tong = so1+so2
# print("vay tong cua 2 so da nhap la :", tong)


# pheptoan = input("nhap vao phep toan(+,-,*,/) : ")

# if pheptoan == "+" :
#     print("ket qua la :",so1+so2)
# elif pheptoan == "-" :
#     print("ket qua la :",so1-so2)
# elif pheptoan == "*" :
#     print("ket qua la :",so1*so2)
# elif pheptoan == "/" :
#     print("ket qua la :",so1/so2)

    #or 
op =  input("nhap vao phep toan(+,-,*,/) : ")
if op == "+" :
    r= so1+so2
elif op == "-" :
    r= so1-so2
elif op == "*" :
    r= so1*so2
elif op == "/" :
    r= so1/so2
print(r)
