import java.math.BigDecimal;
public class Main {
public static void main(String args[]) {
double r = 3.1234567;
int decimalPlace = 2;
BigDecimal bd = new BigDecimal(r);
bd = bd.setScale(decimalPlace, BigDecimal.ROUND_UP);
r = bd.doubleValue();
System.out.println(r);
}
}