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Cod sursa(job #546407)
program tex;
var f,g:text;
c:string[100000];
n,i,j,k,p:longint;
begin
assign(f,'text.in');
reset(f);
assign(g,'text.out');
rewrite(g);
readln(f,c);
j:=1;
for i:=1 to length(c) do begin
case c[i] of
'a'..'z':begin inc(k); end;
'A'..'Z':begin inc(k); end;
' ':begin inc(j); end;
end;
end;
writeln(g,k div j);
close(f);
close(g);
end.