real a(1000,1000) open(10,file="out.dat") r=800 x1=-200 y1=500 x2=1200 y2=500 do i=1,1000 do j=1,1000 if( sqrt((i-x1)**2+(j-y1)**2).lt.R. * and.sqrt((i-x2)**2+(j-y2)**2).lt.R) then a(i,j)=2. else a(i,j)=1. endif enddo enddo write(10,"(1000F15.5)") a stop end