/in/Main.java:2: error: class, interface, or enum expected
public static void main(String[] args) {
              ^
/in/Main.java:4: error: class, interface, or enum expected
		int a=input.nextInt(),b=input.nextInt();
		^
/in/Main.java:5: error: class, interface, or enum expected
		System.out.println(a+b);
		^
/in/Main.java:6: error: class, interface, or enum expected
}
^
4 errors