From 31d8a152312a2a6c132ea1c75e007c42c83662fe Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Mon, 6 Feb 2023 22:14:33 +0800
Subject: [PATCH] =?UTF-8?q?1566.=20[NOI2009]=20=E7=AE=A1=E9=81=93=E5=8F=96?=
 =?UTF-8?q?=E7=8F=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

https://hydro.ac/d/bzoj/record/63e10b29dd8145683f7993dc
---
 BZOJ/1566/1566.cpp    | 58 +++++++++++++++++++++++++++++++++++++++++++
 BZOJ/1566/data/1.in   |  3 +++
 BZOJ/1566/data/1.out  |  3 +++
 BZOJ/1566/data/10.in  |  3 +++
 BZOJ/1566/data/10.out |  3 +++
 BZOJ/1566/data/2.in   |  3 +++
 BZOJ/1566/data/2.out  |  3 +++
 BZOJ/1566/data/3.in   |  3 +++
 BZOJ/1566/data/3.out  |  3 +++
 BZOJ/1566/data/4.in   |  3 +++
 BZOJ/1566/data/4.out  |  3 +++
 BZOJ/1566/data/5.in   |  3 +++
 BZOJ/1566/data/5.out  |  3 +++
 BZOJ/1566/data/6.in   |  3 +++
 BZOJ/1566/data/6.out  |  3 +++
 BZOJ/1566/data/7.in   |  3 +++
 BZOJ/1566/data/7.out  |  3 +++
 BZOJ/1566/data/8.in   |  3 +++
 BZOJ/1566/data/8.out  |  3 +++
 BZOJ/1566/data/9.in   |  3 +++
 BZOJ/1566/data/9.out  |  3 +++
 21 files changed, 118 insertions(+)
 create mode 100644 BZOJ/1566/1566.cpp
 create mode 100644 BZOJ/1566/data/1.in
 create mode 100644 BZOJ/1566/data/1.out
 create mode 100644 BZOJ/1566/data/10.in
 create mode 100644 BZOJ/1566/data/10.out
 create mode 100644 BZOJ/1566/data/2.in
 create mode 100644 BZOJ/1566/data/2.out
 create mode 100644 BZOJ/1566/data/3.in
 create mode 100644 BZOJ/1566/data/3.out
 create mode 100644 BZOJ/1566/data/4.in
 create mode 100644 BZOJ/1566/data/4.out
 create mode 100644 BZOJ/1566/data/5.in
 create mode 100644 BZOJ/1566/data/5.out
 create mode 100644 BZOJ/1566/data/6.in
 create mode 100644 BZOJ/1566/data/6.out
 create mode 100644 BZOJ/1566/data/7.in
 create mode 100644 BZOJ/1566/data/7.out
 create mode 100644 BZOJ/1566/data/8.in
 create mode 100644 BZOJ/1566/data/8.out
 create mode 100644 BZOJ/1566/data/9.in
 create mode 100644 BZOJ/1566/data/9.out

diff --git a/BZOJ/1566/1566.cpp b/BZOJ/1566/1566.cpp
new file mode 100644
index 00000000..599f3e93
--- /dev/null
+++ b/BZOJ/1566/1566.cpp
@@ -0,0 +1,58 @@
+#include <iostream>
+#include <algorithm>
+#include <cstring>
+#include <string>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 505;
+const int mod = 1024523;
+
+int n, m, f[2][N][N]{1};
+std::string a, b;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> n >> m >> a >> b;
+
+    std::reverse(a.begin(), a.end());
+    std::reverse(b.begin(), b.end());
+
+    a = ' ' + a;
+    b = ' ' + b;
+
+    for (int k = 1; k <= n + m; k++) {
+        int t = k & 1,
+            p = t ^ 1;
+
+        memset(f[t], 0x00, sizeof(f[t]));
+
+        for (int i = std::max(0, k - m); i <= std::min(n, k); i++) {
+            for (int j = std::max(0, k - m); j <= std::min(n, k); j++) {
+                if (i && j && a[i] == a[j]) {
+                    f[t][i][j] = (f[t][i][j] + f[p][i - 1][j - 1]) % mod;
+                }
+
+                if (i && k - j && a[i] == b[k - j]) {
+                    f[t][i][j] = (f[t][i][j] + f[p][i - 1][j]) % mod;
+                }
+
+                if (k - i && j && b[k - i] == a[j]) {
+                    f[t][i][j] = (f[t][i][j] + f[p][i][j - 1]) % mod;
+                }
+
+                if (k - i && k - j && b[k - i] == b[k - j]) {
+                    f[t][i][j] = (f[t][i][j] + f[p][i][j]) % mod;
+                }
+            }
+        }
+    }
+
+    cout << f[(n + m) & 1][n][n] << endl;
+
+    return 0;
+}
diff --git a/BZOJ/1566/data/1.in b/BZOJ/1566/data/1.in
new file mode 100644
index 00000000..4a814828
--- /dev/null
+++ b/BZOJ/1566/data/1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:71ea83145ee0bc5dd262b22b3890749bdc06811d8efdd35dc7320bf042c021bb
+size 509
diff --git a/BZOJ/1566/data/1.out b/BZOJ/1566/data/1.out
new file mode 100644
index 00000000..52d0e988
--- /dev/null
+++ b/BZOJ/1566/data/1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1ee35c6ccedae99c86aabb0ca8e28cfb49582193bdafb52ffb31a629c1543f7d
+size 5
diff --git a/BZOJ/1566/data/10.in b/BZOJ/1566/data/10.in
new file mode 100644
index 00000000..95b66ee8
--- /dev/null
+++ b/BZOJ/1566/data/10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:106cd8cb928fec44705cdc3ac497dbbe7003759b65226ca09fa438e517189ca7
+size 11
diff --git a/BZOJ/1566/data/10.out b/BZOJ/1566/data/10.out
new file mode 100644
index 00000000..553db440
--- /dev/null
+++ b/BZOJ/1566/data/10.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9961d158a7e0e2f990765971a9e490af826c0743b7d603020f34cc8944319fcb
+size 3
diff --git a/BZOJ/1566/data/2.in b/BZOJ/1566/data/2.in
new file mode 100644
index 00000000..bdd99f70
--- /dev/null
+++ b/BZOJ/1566/data/2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:80165ee2c754bc7acaf18f1f5e7c28220d851def519cd5b6089dfe38b39d0169
+size 810
diff --git a/BZOJ/1566/data/2.out b/BZOJ/1566/data/2.out
new file mode 100644
index 00000000..8d170e52
--- /dev/null
+++ b/BZOJ/1566/data/2.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d72f4dc56a6acbbfeed2c454b073c7fbafe039b372d7784493226a9a46334c8a
+size 7
diff --git a/BZOJ/1566/data/3.in b/BZOJ/1566/data/3.in
new file mode 100644
index 00000000..2cdb5819
--- /dev/null
+++ b/BZOJ/1566/data/3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:21d8c42f4fa4bb8b3c63160030e3c12b59907397a7852097920546b5c914bbee
+size 108
diff --git a/BZOJ/1566/data/3.out b/BZOJ/1566/data/3.out
new file mode 100644
index 00000000..2eb5005c
--- /dev/null
+++ b/BZOJ/1566/data/3.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aae8aec2e2bf5efe8de87a3aa2772ff4f744161dc56741161ee4394c21bb7231
+size 7
diff --git a/BZOJ/1566/data/4.in b/BZOJ/1566/data/4.in
new file mode 100644
index 00000000..383a268b
--- /dev/null
+++ b/BZOJ/1566/data/4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:96a9e7a4b4bfa4c1191148321f5ae7650a4279e2d29f56d3ed89d78c661c7e8a
+size 32
diff --git a/BZOJ/1566/data/4.out b/BZOJ/1566/data/4.out
new file mode 100644
index 00000000..402d96eb
--- /dev/null
+++ b/BZOJ/1566/data/4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6717f015895d9f351206c976a3a097be55d6630fd332020d9083e6e53e34a924
+size 7
diff --git a/BZOJ/1566/data/5.in b/BZOJ/1566/data/5.in
new file mode 100644
index 00000000..d6439789
--- /dev/null
+++ b/BZOJ/1566/data/5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:57ec1338013485e5e4e27556c59eca4acb0f3f724b84055ec4be89f9772cbd28
+size 310
diff --git a/BZOJ/1566/data/5.out b/BZOJ/1566/data/5.out
new file mode 100644
index 00000000..0256a2f6
--- /dev/null
+++ b/BZOJ/1566/data/5.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:94b199dec5c4d0b78efb0bfd50876e128cdc9070827cbbfd5cfe2acee1f6a7bd
+size 7
diff --git a/BZOJ/1566/data/6.in b/BZOJ/1566/data/6.in
new file mode 100644
index 00000000..85f621ff
--- /dev/null
+++ b/BZOJ/1566/data/6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:403a9e9bd2cf0d92b058f1957850571530016a2eddc40fad465ec71a44f85af7
+size 22
diff --git a/BZOJ/1566/data/6.out b/BZOJ/1566/data/6.out
new file mode 100644
index 00000000..92119e09
--- /dev/null
+++ b/BZOJ/1566/data/6.out
@@ -0,0 +1,3 @@
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+oid sha256:93da37d39013fe087726783a934c00184eb61594219d5fcf6ce2ed35fe206144
+size 6
diff --git a/BZOJ/1566/data/7.in b/BZOJ/1566/data/7.in
new file mode 100644
index 00000000..d010d8c4
--- /dev/null
+++ b/BZOJ/1566/data/7.in
@@ -0,0 +1,3 @@
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diff --git a/BZOJ/1566/data/7.out b/BZOJ/1566/data/7.out
new file mode 100644
index 00000000..56365344
--- /dev/null
+++ b/BZOJ/1566/data/7.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3657909aa9700917c86a233ca18e90290b2be79439b1f99b710b160af4429282
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diff --git a/BZOJ/1566/data/8.in b/BZOJ/1566/data/8.in
new file mode 100644
index 00000000..62322047
--- /dev/null
+++ b/BZOJ/1566/data/8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/BZOJ/1566/data/8.out b/BZOJ/1566/data/8.out
new file mode 100644
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--- /dev/null
+++ b/BZOJ/1566/data/8.out
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diff --git a/BZOJ/1566/data/9.in b/BZOJ/1566/data/9.in
new file mode 100644
index 00000000..75a2c78b
--- /dev/null
+++ b/BZOJ/1566/data/9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/BZOJ/1566/data/9.out b/BZOJ/1566/data/9.out
new file mode 100644
index 00000000..f2d44c11
--- /dev/null
+++ b/BZOJ/1566/data/9.out
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