Problem: Vasya has a non-negative integer n. He wants to round it to nearest integer, which ends up with 0. If n already ends up with 0, Vasya considers it already rounded.

For example, if n = 4722 answer is 4720. If n = 5 Vasya can round it to 0 or to 10. Both ways are correct.

For given n find out to which integer will Vasya round it.

Input

The first line contains single integer n (0 ≤ n ≤ 109) — number that Vasya has.

Output

Print result of rounding n. Pay attention that in some cases answer isn't unique. In that case print any correct answer.

Examples

Input

5


Output

0


Input

113


Output

110


Input

1000000000


Output

1000000000


Input

5432359


Output

5432360

Note

In the first example n = 5. Nearest integers, that ends up with zero are 0 and 10. Any of these answers is correct, so you can print 0 or 10.

Solution (in JAVA):

Solution:
var num=readline();
//var numbers = readline().split(" ").map(function (x) { return parseInt(x); });

//cuento lo largo que es
var cifras = 0;
var numOriginal = parseInt(num);
var redondeo;
var suma;
while (num>0) {
    num = parseInt(num / 10);
    cifras++;
}
var numString = numOriginal.toString();
var ultCifra = numString.charAt(cifras - 1);
ultCifra = parseInt(ultCifra);
if (numOriginal==0) {
    redondeo = 0;
} else if (ultCifra==0) {
    redondeo = numOriginal;
} else if (ultCifra == 1 || ultCifra == 2 || ultCifra == 3 || ultCifra == 4 || ultCifra == 5) {
    redondeo = numOriginal - ultCifra;
} else {
    suma = 10 - ultCifra;
    redondeo = numOriginal + suma;
}
print(redondeo);