import java.io.*;
import static java.lang.Math.*;
public class A {
// Function to round - off the number
static void Round_off(double N, double n)
{
int h;
double l, a, b, c, d, e, i, j, m, f, g;
b = N;
c = floor(N);
// Counting the no. of digits to the left of decimal point
// in the given no.
for (i = 0; b >= 1; ++i)
b = b / 10;
d = n - i;
b = N;
b = b * pow(10, d);
e = b + 0.5;
if ((float)e == (float)ceil(b)) {
f = (ceil(b));
h = (int)(f - 2);
if (h % 2 != 0) {
e = e - 1;
}
}
j = floor(e);
m = pow(10, d);
j = j / m;
System.out.println("The number after rounding-off is "
+ j);
}
// Driver main function
public static void main(String args[])
{
double N, n;
// Number to be rounded - off
N = 139.59;
// No. of Significant digits required in the no.
n = 4;
Round_off(N, n);
}
}