def opp():
    total = []
    while True:
        unit= input("请输入：")
    
    
        if unit== 'q':
            break
        else:
            try:
                unit=int(unit)
            except:
                print("gui")
            else:
                
                total.append(unit)
    return total
def u(k):
    w=0
    for i in k:
        w=w+i
    return w
o=u(opp())
print(o)