while True:
    tall = int(input("Tast inn et tall: "))
    if tall == 10:
        print("Du tastet inn 10")
        break

sum = 0
while True:
    tall = int(input("Tast inn et tall:")) 
    if tall == 10:
        print("Du tastet inn 10")
        break
    else:
        sum += tall

print(sum)