Cod sursa(job #368791)
Utilizator | Cangea Catalina stay_awake77 | Data | 25 noiembrie 2009 21:47:22 |
---|---|---|---|
Problema | Cifra | Scor | 0 |
Compilator | fpc | Status | done |
Runda | Arhiva de probleme | Marime | 0.53 kb |
var n,s,i,j,u,a:longint;
begin
assign(input,'cifra.in'); reset(input);
assign(output,'cifra.out'); rewrite(output);
while not eof do begin
readln(n);
s:=0;
for i:=1 to n do begin
if i mod 4=1 then u:=i mod 10
else if i mod 4=2 then u:=(i*i) mod 10
else if i mod 4=3 then u:=(i*i*i) mod 10
else u:=(i*i*i*i) mod 10;
s:=s+u;
end;
s:=s mod 10;
writeln(s);
end;
close(input);
close(output);
end.