program ideone;
Var
a: array[1..10000] of integer;
i, k, n: integer;
begin
readln(n);
for i:=1 to n do
read(a[i]);
writeln;
k:=0;
for i:=2 to n do
if a[i] > a[i-1] then
inc(k);
writeln(k);
end.
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