begin
library A0, A1, A4, A5, A15;

real procedure Time;
   kdf9 2/0/0/0;
   SET 17; OUT; REV; ERASE; SET 23; FLOAT; exit;
   algol;

real   t1, t2;
integer i1, i2;

procedure pre (s); string s;
   begin writetext(30, s); t1 := Time end pre;

procedure post;
   begin t2 := Time - t1;  write(30, layout, t2 ×  1.0º6 / 4.0 - c) end post;

real x, y, z, t;
real a, b, c, d, layout;

integer array E1[1:1], E2[1:1, 1:1], E3[1:1, 1:1, 1:1];
integer i, j, k, l, m, n;

procedure p0; ;

procedure p1(x); value x; real x; ;

procedure p2(x, y); value x, y; real x, y; ;

procedure p3(x, y, z); value x, y, z; real x, y, z; ;

y := 1.0; z := 2.0; l := 1; m := 2;
a := 1; b := 2;
layout := format({ndddd.dddc});

writetext(30, {null _ statement _ timing _ overhead _ in _ microseconds{ss}});
t1 := Time; t2 := Time - t1; c := t ×  1.0º6; write(30, layout, c);

i := 98;
pre({{c}!for  _ i _ := _ i _ + _ 1 _ !while  _ i _ < _ n _ !do  _ TOTAL{ss}});
   for i := i + 1 while i < n do;
   for i := i + 1 while i < n do;
   for i := i + 1 while i < n do;
   for i := i + 1 while i < n do;
post;

pre({{c}goto _ abcd{ss}});
   begin goto abcd1; abcd1: end;
   begin goto abcd2; abcd2: end;
   begin goto abcd3; abcd3: end;
   begin goto abcd4; abcd4: end;
post;

end
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