Inout cycle programming problem

Thor is a senior developer of Microsoft. In curiosity, he wants to know the In-Out cycle of
other employees.
An employee comes into the office and after that, if he goes out, he completed an
InOut Cycle. Every Microsoft employee needs to be Punched In and Punched Out for
coming in and going out of the office. Thor can take the info of an employee’s entry
and exit history from the Punching Database. But he faces some problems. Some
employees punched in/out multiple times for a single entry/exit.
Thor gives you the entry and exit history of an employee and he wants you to calculate
the InOut Cycle for him.
Input
The first line of the input contains a single number "N"(1≤N≤100) donates the number
of Punch In/Out pressed by an employee. Second-line contains the entry and exit
history of that employee.
Output
The output will be the number of InOut Cycles for the given employee.
Samples
Input Output
6
In Out In Out In Out
3
Input Output
7
In In In Out Out Out Out
1
Input Output
5
In Out In Out Out
2

package hello;
import java.util.Scanner;
public class Hello
{
	
	public static void main(String args[])
	{
		
		Scanner sc=new Scanner (System.in);
		//int n=sc.nextInt();
		//sc.close();
		String[] string = new String [sc.nextInt()];      
		sc.nextLine();   
		for (int i = 0; i < string.length; i++)   
		{  
		string[i] = sc.nextLine();  
		}  
		
		
				
		
		
	}
	



}