slzxzh 2008-08-26 17:15:00
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var
a:array [1..1000] of longint;
n,s,i,j,t:longint;
begin
readln(n);
for i:=1 to n do read(a[i]);
s:=0;
for i:=1 to n-1 do
for j:=i+1 to n do
if a[i]>a[j] then
begin
s:=s+1;
t:=a[i]; a[i]:=a[j]; a[j]:=t;
end;
write(s);
end.