giatri1 = input() #Nhap gia tri thu nhat giatri2 = input() #Nhap gia tri thu hai try: #Khoi lenh co the phat sinh loi    so1 = int(giatri1) #Ep kieu giatri1 sang so nguyen    so2 = int(giatri2) #Ep kieu giatri2 sang so nguyen    tong = so1 + so2 #Tinh tong hai so    print("tong hai so la: ", tong) #In tong hai so except: #Khoi lenh duoc thuc thi khi loi xay ra    print("dinh dang dau vao khong hop le!") #In thong bao