Range Analysis by tails

u,v;g(x){u>x?u=x:v<x?v=x:0;}main(a,b,c,d,e){for(;scanf(e="* range(%d,%d)\n"+2,&a,&b),~scanf(e-2,&c,&d);printf(e,u,v))u=v=a*c,g(a*d),g(b*c),g(b*d);}

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