import java.io.*;
import java.util.*;
import java.awt.geom.*;

/**
 * Solution to Text Roll
 * 
 * @author vanb
 */
public class textroll_vanb
{
    public BufferedReader br;
    public PrintStream ps;
    
    
    /**
     * Driver.
     * @throws Exception
     */
    public void doit() throws Exception
    {
        br = new BufferedReader( new InputStreamReader( System.in ) ); //new FileReader( "textroll.judge" ) );
        ps = System.out; //new PrintStream( new FileOutputStream( "textroll.solution" ) );

        for(;;)
        {
            int n = Integer.parseInt( br.readLine().trim() );
            if( n==0 ) break;
          
            // One line of text
            char text[];
            
            // The position of the ball
            int ball = 1;
            for( int i=0; i<n; i++ )
            {
                // Read the text
                text = br.readLine().toCharArray();
                
                // Roll the ball until it hits a space or falls off the end of the line
                while( ball<=text.length && text[ball-1]!=' ' ) ++ball;
            }
            
            ps.println( ball );
        }
    }
    
    /**
     * @param args
     */
    public static void main( String[] args ) throws Exception
    {
        new textroll_vanb().doit();        
    }   
}