记录编号	567562	评测结果	AAAAAAAAAA
题目名称	[NOIP 2016PJ]回文日期	最终得分	100
用户昵称	EmiliaCR	是否通过	通过
代码语言	C	运行时间	0.000 s
提交时间	2021-12-02 16:01:52	内存使用	0.00 MiB

#include <stdio.h>
int fan(int a) {
	int ans;
	ans = a / 1000 + a / 100 % 10 * 10 + a / 10 % 10 * 100 + a % 10 * 1000;
	return ans;
}
int rn(int year) {
	int r = 0;
	if (year % 100 == 0) {
		if (year % 400 == 0) {
			r = 1;
		}
		else {
			r = 0;
		}
	}
	else {
		if (year % 4 == 0) {
			r = 1;
		}
		else {
			r = 0;
		}
	}
	return r;
}
int rq(int da,int y) {
	int m, d, t = 0;
	
	
	m = da / 100;
	d = da % 100;
	if (m > 12) {
		return t;
	}
	if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12) {
		if (d > 31) {
			return t;
		}
		else {
			t = 1;
		}
	}
	if (m == 4 || m == 6 || m == 9 || m == 11) {
		if (d > 30) {
			return t;
		}
		else {
			t = 1;
		}
	}
	if (m == 2 && rn(y) == 1) {
		if (d > 29) {
			return t;
		}
		else {
			t = 1;
		}
	}
	if (m == 2 && rn(y) == 0) {
		if (d > 28) {
			return t;
		}
		else {
			t = 1;
		}
	}
	return t;
}
int main() {
	freopen("datea.in", "r", stdin);
	freopen("datea.out", "w", stdout);
	int da1,da2,year1,year2,ans=0;
	int md1, md2,mdf1,mdf2;
	scanf("%d%d", &da1,&da2);
	md1 = da1 % 10000; md2 = da2 % 10000;
	year1 = da1 / 10000; year2 = da2 / 10000;
	
	if (da1 == da2) {
		if (rq(fan(year1), year1) == 1 && fan(year1) == md1) {

		ans++;
		
	}
	}
	else {
		for (int i = year1 + 1; i < year2; i++) {
			if (rq(fan(i),i) == 1) {
				ans++;
				
			}
		}
		if (fan(year1) < md1 && rq(fan(year1), year1) == 1 && fan(year1) == md1) {
			ans++;
			
		}
		if (fan(year2) > md2 && rq(fan(year2), year2) == 1 && fan(year2) == md2) {
			ans++;
			
		}
	}
	printf("%d", ans);
	return 0;

}