#include <bits/stdc++.h> using namespace std; int a1[] = {0,31,28,31,30,31,30,31,31,30,31,30,31}; int a2[] = {0,31,29,31,30,31,30,31,31,30,31,30,31}; bool isrun(int y){ if((y % 4 == 0 && y % 100 != 0) || y % 400 == 0) return true; else return false; } int main(){ int cnt,y,m,d; cin...