# سوال دوم

a=input("adad aval ra vared konid :")
b=input("adad dovom ra vared konid :")
c=input("adad sevom ra vared konid :")
if(a.isnumeric()and b.isnumeric()and c.isnumeric()):
    a=int(a)
    b=int(b)
    c=int(c)
    if((b<a and a<c) or(c<a and a<b)):
        print(a)
    elif((a<b and b<c) or(c<b and b<a)):
        print(b)
    elif((a<c and c<b)or (b<c and c<a)):
        print(c)
    else:
        print("Adad mosavi ast")



else:
    print("Adad sahih vared konid")