1936解题思路

#include <bits/stdc++.h>
 using namespace std;
 int main() {
    int year,month,day;
    int b[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
    int a[16]={0};
    scanf("%d %d %d",&year,&month,&day);
    if((year%4==0&&year%100!=0)||year%400==0)
 	b[2]=29;
	if(day>b[month]) 
	day=b[month];
    int i=15;
    while(month>0)
    {
    	a[i--]=month%2;
    	month=month/2;
	}
	i=11;
	
	while(day>0)
	{
		a[i--]=day%2;
		day=day/2;
	}
	int sum=year%100;
	i=6;
	while(sum>0)
	{
		
		a[i--]=sum%2;
		sum=sum/2;
	}
	int aus=0;
	for(int j=0;j<16;j++)
	{
		aus=aus*2+a[j];
	}
	printf("%d\n",aus);
}