begin comment library 9; integer array eq [1 : 3]; integer i; real x, y; procedure inc(a, b); value a, b; real a, b; if a < b then eq [1] := eq [1] + 1 else if a = b then eq [2] := eq [2] + 1 else eq [3] := eq [3] + 1; for i := 1 step 1 until 3 do eq [i] := 0; for i := 2 step 1 until 100 do begin inreal(2, x); y := 1 / (i * i - 1); outreal(1, y); inc(x, y) end; for i := 1 step 1 until 3 do outreal(1, eq [i]); end