import java.time.LocalDateTime;

public class Main {

    public static void main(String[] args) {
	// write your code here
        LocalDateTime t2 = LocalDateTime.parse("2020-01-31T00:00:00");
        LocalDateTime t1 = LocalDateTime.parse("2020-01-01T00:00:00");
        System.out.println(t2+" plusMonths "+t2.plusMonths(1));
        System.out.println(t1+" plusMonths "+t1.plusMonths(1));
    }
}