import java.util.Scanner; public class Main { private int leapMonth[] = {0, 31,29,31,30,31,30,31,31,30,31,30,31}; private int normalMonth[] = {0, 31,28,31,30,31,30,31,31,30,31,30,31}; private int result; public Main() { } public int iConverDateToDay(int year, int month, int day) { if (year <= 0 |...