implicit none
integer(8) i,j
character(100) moji
character(100) suchi
integer(8),allocatable :: x(:)
allocate (x(100))
read(*,*) moji
x=0
do i=1,len(moji)
   if (moji(i:i) >= '1' .and. moji(i:i) <= '9') then
       suchi=moji(i:i)
       read(suchi,*) j
       x(i)=j
   end if
end do
write(*,*) sum(x)
end