[回文日期题目点这里] 蒟蒻不理解 k[++lla]=(t%101000+t/10%10100+t/100%10*10+t/1000%10)*10000+t;(https://www.luogu.com.cn/problem/P2010)

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int a[13]={0,31,29,31,30,31,30,31,31,30,31,30,31},k[666],lla=0,t,p,q,ans=0;
	cin>>p>>q;
	for(int i=1;i<=12;i++){
		for(int j=1;j<=a[i];j++){
			t=i*100+j;
			k[++lla]=(t%10*1000+t/10%10*100+t/100%10*10+t/1000%10)*10000+t;
			if(k[lla]>=p&&k[lla]<=q)
			ans++;
		}
	}
	cout<<ans;
	return 0;
}