/in/Main.java:1: error: class, interface, or enum expected
	public static void main(String[]args) {
	              ^
/in/Main.java:4: error: class, interface, or enum expected
		int b=10+(int)(Math.random()*10) ;
		^
/in/Main.java:6: error: class, interface, or enum expected
		System.out.println(a+b);
		^
/in/Main.java:7: error: class, interface, or enum expected
	}
	^
4 errors