loop.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main{
	public static void main(String args[]) throws NumberFormatException, IOException{
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		final int N = Integer.parseInt(br.readLine());
		
		StringBuilder sb = new StringBuilder();
		
		for (int i = 0; i < N; i++) {
			for (int j = 0; j < N ; j++) {
				if (j < i) {
					sb.append(" ");
				}else {
					sb.append("*");
				}
			}
			sb.append("\n");
		}
		System.out.println(sb);
	}
}