#include<bits/stdc++.h> using namespace std; int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; int b[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; bool isLeapYear(int year){ return (year%400==0)||(year%4==0&&year%100!=0); } int sum1=0,sum2=0; int input1,input2; int year1,month1,day1,ye...