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Cod sursa(job #393605)
var f,g:text;
c:char;
k,l:longint;
ok:boolean;
begin
assign(f,'text.in');
reset(f);
k:=0;
l:=0;
ok:=true;
while not eof(f) do begin
read(f,c);
if ((ord(c)<65)or(ord(c)>90))and((ord(c)<97)or(ord(c)>122))and(k=0) then begin
ok:=false;
k:=0;
end
else
if k=0 then k:=1;
if (ok=true)and((ord(c)<65)or(ord(c)>90))and((ord(c)<97)or(ord(c)>122)) then begin
inc(k);
ok:=false;
end
else
if ((ord(c)>=65)and(ord(c)<=90))or((ord(c)>=97)and(ord(c)<=122)) then
begin
inc(l);
ok:=true;
end;
end;
if (ok=false)and((ord(c)<65)or(ord(c)>90))and((ord(c)<97)or(ord(c)>122)) then dec(k);
close(f);
assign(g,'text.out');
rewrite(g);
writeln(g,l div k);
close(g);
end.