read(*,*)i,k
4 if(i.gt.1) then
go to 20
else
go to 10
endif
20 j=i-1
go to 2
1 c=mod(i,j)
if(c.gt.o) then
j=j-1
go to 2
else
i=i-1
go to 3
endif
go to 10
2 if(j.gt.1) then
go to 1
else
write(*,*)i
i=i-1
go to 3
endif
3 if(i.ge.k) then
go to 4
endif
10 write(*,*)'work done'
stop
end
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