public class t1
{
public static void main(String[] args)
{
double pi4=0;
int len,zec=Integer.parseInt(args[0]);
long i,u,t=System.currentTimeMillis();
for (i=0;i<=Integer.MAX_VALUE;i++)
{
pi4=(Math.pow(-1,i))/(2*i+1)+pi4;
len=Double.toString(pi4*4).length();
if (len==zec+2) break;
}
u=System.currentTimeMillis();
System.out.println("Pi cu "+zec+" zecimale este "+pi4*4);
System.out.print("Timpul total de executie este de "+(u-t)+" milisecunde.");
}
}