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Cod sursa(job #37500)
var s:string;
n,nrc,nr,i,ok,j:longint;
f2,f1:text;
function verf(i:longint):integer;
var ok,x:longint;
begin
ok:=0;
x:=ord(s[i]);
if (x>=97)and(x<=122) then ok:=1;
if (x>=65)and(x<=90) then ok:=1;
verf:=ok;
end;
begin
assign(f1,'text.in');
reset(f1);
assign(f2,'text.out');
rewrite(f2);
readln(f1,s);
n:=length(s);
nrc:=0;
nr:=0;
i:=1;
while (i<=n) do
begin
ok:=verf(i);
if ok=1 then
begin
j:=i;
while (ok=1)and(i<=n) do
begin
i:=i+1;
ok:=verf(i);
end;
nrc:=nrc+1;
nr:=nr+(i-j);
end;
i:=i+1;
end;
writeln(f2,nr div nrc);
close(f2);
close(f1);
end.