Реализовать следующее математическое выражение:
(x+y)/a*b/xy
на паскале

program nm13; uses crt; var s1,s2,d,a,diag: real; beginwriteln('vvedi ploschad kruga i ploschad kvadrata'); readln(s1); readln(s2); d: =2*sqrt(s1/3.14); a: =sqrt(s2); diag: =2*sqrt(2*a*a); if diag> d then writeln (' krug pomestits9 v kvadrate ') else writeln (' krug ne pomestits9 v kvadrate ');

readln;

end.

var

a: [1..100] array of integer;

i,n,p: integer;

begin

readln(n);

for i: =1 to n do

begin

readln(a[i]);

p: =2;

while (p*p< =a[i]) do

begin

if p*p=a[i] then writeln (a[i],' полный квадрат')

p: =p+1;

end;

end;

end.

var i,s,p: integer; a: array [1..100] of integer;

begin 

s: =0; p: =0;

writeln('vvedite masiv a: ');  

for i: =1 to 10 do begin

write('a[',i,']=');

readln(a[i]);

end;

for i: =1 to 10 do begin

if a[i]> 0 then s: =s+a[i];  

end;

s: =s*2;

writeln('udvoennaya suma polozhitelnih elementov=',s);

writeln('indexi elementov kotorie bolshe prediduschego: ');

writeln;

for i: =2 to 10 do begin

if a[i]> a[i-1] then write(i,', ');

end;

for i: =2 to 10 do begin

if ((a[i]> =0) and (a[i-1]> =0)) or ((a[i]< 0) and (a[i-1]< 0)) then p: =p+1;

end;

writeln;

if p> 0 then writeln('masiv imeet pari sosednih elementov s odnakovimi znakami') else   writeln('masiv ne imeet pari sosednih elementov s odnakovimi znakami');  

readln(s);

end. 

program dddd; uses crt; var a,b,c,i: integer; beginclrscr; c: =10; readln(a); while a < > 0 dobeginb: = a mod 10; if b < c then c: =b; a: = a div 10; end; writeln(c); readkey; end.