From 0c63ada187ca9631b508d1fd9feb0a96d839932e Mon Sep 17 00:00:00 2001
From: Baoshuo Ren <i@baoshuo.ren>
Date: Fri, 11 Feb 2022 22:21:22 +0800
Subject: [PATCH] =?UTF-8?q?P2010=20[NOIP2016=20=E6=99=AE=E5=8F=8A=E7=BB=84?=
 =?UTF-8?q?]=20=E5=9B=9E=E6=96=87=E6=97=A5=E6=9C=9F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

R69127852
---
 Luogu/P2010/P2010.cpp        | 35 +++++++++++++++++++++++++++++++++++
 Luogu/P2010/data/P2010_9.in  |  3 +++
 Luogu/P2010/data/P2010_9.out |  3 +++
 3 files changed, 41 insertions(+)
 create mode 100644 Luogu/P2010/P2010.cpp
 create mode 100644 Luogu/P2010/data/P2010_9.in
 create mode 100644 Luogu/P2010/data/P2010_9.out

diff --git a/Luogu/P2010/P2010.cpp b/Luogu/P2010/P2010.cpp
new file mode 100644
index 00000000..614c6324
--- /dev/null
+++ b/Luogu/P2010/P2010.cpp
@@ -0,0 +1,35 @@
+#include <algorithm>
+#include <cstdio>
+#include <iostream>
+#include <string>
+
+const int days[] = {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+struct node {
+    int year, month, day;
+} date1, date2;
+
+using namespace std;
+
+int ans;
+std::string s1, s2;
+
+int main() {
+    scanf("%4d%2d%2d", &date1.year, &date1.month, &date1.day);
+    scanf("%4d%2d%2d", &date2.year, &date2.month, &date2.day);
+    for (int yy = date1.year; yy <= date2.year; yy++) {
+        for (int mm = (yy == date1.year ? date1.month : 1);
+             mm <= (yy == date2.year ? date2.month : 12);
+             mm++) {
+            for (int dd = (yy == date1.year && mm == date1.month ? date1.day : 1);
+                 dd <= (yy == date2.year && mm == date2.month ? date2.day : days[mm]);
+                 dd++) {
+                s1 = s2 = std::to_string(yy * 10000 + mm * 100 + dd);
+                std::reverse(s2.begin(), s2.end());
+                if (s1 == s2) ans++;
+            }
+        }
+    }
+    printf("%d\n", ans);
+    return 0;
+}
diff --git a/Luogu/P2010/data/P2010_9.in b/Luogu/P2010/data/P2010_9.in
new file mode 100644
index 00000000..9ef1231a
--- /dev/null
+++ b/Luogu/P2010/data/P2010_9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6c50219be09140332a2c6c21fa73f565196ccb6f65f726684bcba752e6dc3dff
+size 18
diff --git a/Luogu/P2010/data/P2010_9.out b/Luogu/P2010/data/P2010_9.out
new file mode 100644
index 00000000..1bfa7175
--- /dev/null
+++ b/Luogu/P2010/data/P2010_9.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d030dea268935dbd3e2db7c17196757924d0463c5800349904bc5dcf538e1149
+size 4