Cod sursa(job #168355)
Utilizator | Postelnicu Dan Marian kolapsys | Data | 31 martie 2008 01:09:45 |
---|---|---|---|
Problema | Litere | Scor | 100 |
Compilator | fpc | Status | done |
Runda | Arhiva de probleme | Marime | 0.54 kb |
{ http://infoarena.ro/problema/litere }
var f,g:text;
n,i:integer;
l:int64;
j:char;
a:array[1..10000]of char;
fv:array['a'..'z'] of integer;
begin
assign(f,'litere.in'); reset(f);
assign(g,'litere.out'); rewrite(g);
readln(f,n);
l:=0;
for i:=1 to n do
begin
read(f,a[i]);
inc(fv[a[i]]);
for j:=a[i] to 'z' do
begin
if j<>a[i] then l:=l+fv[j];
end;
end;
writeln(g,l);
close(f); close(g);
end.