/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
// your code goes here
Stack<Integer> stack=new Stack<Integer>();
stack.push(5);
stack.push(10);
stack.push(15);
System.
out.
print(stack.
pop()+stack.
size()); }
}
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