From 7fd28acab2d8acca27438251e0533a9190fc5b4d Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Wed, 19 Oct 2022 22:06:03 +0800
Subject: [PATCH] =?UTF-8?q?#1665.=20=E3=80=902022.10.19=20=E8=81=94?=
 =?UTF-8?q?=E8=80=83=E3=80=91=E6=8E=92=E5=88=97?=
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Content-Type: text/plain; charset=UTF-8
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https://sjzezoj.com/submission/61143
---
 S2OJ/1665/1665.cpp               | 48 ++++++++++++++++++++++++++++++++
 S2OJ/1665/data/permutation1.in   |  3 ++
 S2OJ/1665/data/permutation1.out  |  3 ++
 S2OJ/1665/data/permutation10.in  |  3 ++
 S2OJ/1665/data/permutation10.out |  3 ++
 S2OJ/1665/data/permutation2.in   |  3 ++
 S2OJ/1665/data/permutation2.out  |  3 ++
 S2OJ/1665/data/permutation3.in   |  3 ++
 S2OJ/1665/data/permutation3.out  |  3 ++
 S2OJ/1665/data/permutation4.in   |  3 ++
 S2OJ/1665/data/permutation4.out  |  3 ++
 S2OJ/1665/data/permutation5.in   |  3 ++
 S2OJ/1665/data/permutation5.out  |  3 ++
 S2OJ/1665/data/permutation6.in   |  3 ++
 S2OJ/1665/data/permutation6.out  |  3 ++
 S2OJ/1665/data/permutation7.in   |  3 ++
 S2OJ/1665/data/permutation7.out  |  3 ++
 S2OJ/1665/data/permutation8.in   |  3 ++
 S2OJ/1665/data/permutation8.out  |  3 ++
 S2OJ/1665/data/permutation9.in   |  3 ++
 S2OJ/1665/data/permutation9.out  |  3 ++
 S2OJ/1665/data/problem.conf      |  3 ++
 22 files changed, 111 insertions(+)
 create mode 100644 S2OJ/1665/1665.cpp
 create mode 100644 S2OJ/1665/data/permutation1.in
 create mode 100644 S2OJ/1665/data/permutation1.out
 create mode 100644 S2OJ/1665/data/permutation10.in
 create mode 100644 S2OJ/1665/data/permutation10.out
 create mode 100644 S2OJ/1665/data/permutation2.in
 create mode 100644 S2OJ/1665/data/permutation2.out
 create mode 100644 S2OJ/1665/data/permutation3.in
 create mode 100644 S2OJ/1665/data/permutation3.out
 create mode 100644 S2OJ/1665/data/permutation4.in
 create mode 100644 S2OJ/1665/data/permutation4.out
 create mode 100644 S2OJ/1665/data/permutation5.in
 create mode 100644 S2OJ/1665/data/permutation5.out
 create mode 100644 S2OJ/1665/data/permutation6.in
 create mode 100644 S2OJ/1665/data/permutation6.out
 create mode 100644 S2OJ/1665/data/permutation7.in
 create mode 100644 S2OJ/1665/data/permutation7.out
 create mode 100644 S2OJ/1665/data/permutation8.in
 create mode 100644 S2OJ/1665/data/permutation8.out
 create mode 100644 S2OJ/1665/data/permutation9.in
 create mode 100644 S2OJ/1665/data/permutation9.out
 create mode 100644 S2OJ/1665/data/problem.conf

diff --git a/S2OJ/1665/1665.cpp b/S2OJ/1665/1665.cpp
new file mode 100644
index 00000000..f6a21fe8
--- /dev/null
+++ b/S2OJ/1665/1665.cpp
@@ -0,0 +1,48 @@
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 1e6 + 5;
+const int mod = 1e9 + 7;
+
+int n;
+long long f[N], ans;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> n;
+
+    if (n == 1) {
+        cout << 1 << endl;
+
+        exit(0);
+    }
+
+    f[1] = 1;
+
+    for (int j = 1; j < n; j++) {
+        if (j <= 3) {
+            for (int i = j + 1; i < n; i++) {
+                f[i] = (f[i] + f[j]) % mod;
+            }
+        } else {
+            for (int k = -1; k <= 1; k++) {
+                for (int i = j + k; i < n; i += j) {
+                    if (j < i) f[i] = (f[i] + f[j]) % mod;
+                }
+            }
+        }
+    }
+
+    for (int i = 1; i < n; i++) {
+        ans = (ans + f[i]) % mod;
+    }
+
+    cout << ans * n % mod << endl;
+
+    return 0;
+}
diff --git a/S2OJ/1665/data/permutation1.in b/S2OJ/1665/data/permutation1.in
new file mode 100644
index 00000000..f4808fee
--- /dev/null
+++ b/S2OJ/1665/data/permutation1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:917df3320d778ddbaa5c5c7742bc4046bf803c36ed2b050f30844ed206783469
+size 3
diff --git a/S2OJ/1665/data/permutation1.out b/S2OJ/1665/data/permutation1.out
new file mode 100644
index 00000000..7d650d15
--- /dev/null
+++ b/S2OJ/1665/data/permutation1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3c1636261e71d475f64bab6ca440abada65104a04dc48e9bd7c05740e26609fd
+size 5
diff --git a/S2OJ/1665/data/permutation10.in b/S2OJ/1665/data/permutation10.in
new file mode 100644
index 00000000..56b15465
--- /dev/null
+++ b/S2OJ/1665/data/permutation10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c69ffaa2ccdba358f9000d08b1c0a0c4b09054a78ecbbeb8d39959732a39e39
+size 7
diff --git a/S2OJ/1665/data/permutation10.out b/S2OJ/1665/data/permutation10.out
new file mode 100644
index 00000000..cf784422
--- /dev/null
+++ b/S2OJ/1665/data/permutation10.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:494d852b61161b8a04fc6b4953532727eca70b3a6acb852af82d69a3cb10cdfc
+size 10
diff --git a/S2OJ/1665/data/permutation2.in b/S2OJ/1665/data/permutation2.in
new file mode 100644
index 00000000..d790bd49
--- /dev/null
+++ b/S2OJ/1665/data/permutation2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2e6d31a5983a91251bfae5aefa1c0a19d8ba3cf601d0e8a706b4cfa9661a6b8a
+size 2
diff --git a/S2OJ/1665/data/permutation2.out b/S2OJ/1665/data/permutation2.out
new file mode 100644
index 00000000..702c6178
--- /dev/null
+++ b/S2OJ/1665/data/permutation2.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e267861aa56e0f32d0ee3bb3d0c5cfaf8a9b724433c3c9c45ab1750c37c825a4
+size 4
diff --git a/S2OJ/1665/data/permutation3.in b/S2OJ/1665/data/permutation3.in
new file mode 100644
index 00000000..36250e7f
--- /dev/null
+++ b/S2OJ/1665/data/permutation3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:83bbf3eb07b8d7e5f5b3e4ff2515c010f31775e7ec29c5dc8f1a9f9c6566c15d
+size 5
diff --git a/S2OJ/1665/data/permutation3.out b/S2OJ/1665/data/permutation3.out
new file mode 100644
index 00000000..44dba7b0
--- /dev/null
+++ b/S2OJ/1665/data/permutation3.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f8503a4ea1e380a23b2c5b8300ba505bf0d34e650476ce905696ea23b59651ea
+size 10
diff --git a/S2OJ/1665/data/permutation4.in b/S2OJ/1665/data/permutation4.in
new file mode 100644
index 00000000..c158f8cc
--- /dev/null
+++ b/S2OJ/1665/data/permutation4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:da1a7ec0117ac03d898bb6724fbf08dd79538d11664ace501070bc00bf839f64
+size 5
diff --git a/S2OJ/1665/data/permutation4.out b/S2OJ/1665/data/permutation4.out
new file mode 100644
index 00000000..35ac12ad
--- /dev/null
+++ b/S2OJ/1665/data/permutation4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28e996cc1aed3f6e90c589b95c24fa96e7253b83f868e2cf54a22a1f24a6d7ee
+size 10
diff --git a/S2OJ/1665/data/permutation5.in b/S2OJ/1665/data/permutation5.in
new file mode 100644
index 00000000..1d51e9e1
--- /dev/null
+++ b/S2OJ/1665/data/permutation5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d7dff9b4de6403091b09aa111a6a30adcb196a1b0aeb20065aa178b21726a963
+size 5
diff --git a/S2OJ/1665/data/permutation5.out b/S2OJ/1665/data/permutation5.out
new file mode 100644
index 00000000..e89966da
--- /dev/null
+++ b/S2OJ/1665/data/permutation5.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3785fefb89a8578f0c05c3d9848f1eca8544889cb999321560d31ba4857bc588
+size 10
diff --git a/S2OJ/1665/data/permutation6.in b/S2OJ/1665/data/permutation6.in
new file mode 100644
index 00000000..62ba21d4
--- /dev/null
+++ b/S2OJ/1665/data/permutation6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eeea91ca5dc14a768e15388da60f9f6f5f5380d4d87f341689956a88c3878f00
+size 5
diff --git a/S2OJ/1665/data/permutation6.out b/S2OJ/1665/data/permutation6.out
new file mode 100644
index 00000000..c94f90b1
--- /dev/null
+++ b/S2OJ/1665/data/permutation6.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a38cd5e77662162d26979900ef19ecc89fb9d9a68dc71cea6b503e3908824481
+size 10
diff --git a/S2OJ/1665/data/permutation7.in b/S2OJ/1665/data/permutation7.in
new file mode 100644
index 00000000..c85e5b5d
--- /dev/null
+++ b/S2OJ/1665/data/permutation7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:777f2dddfb28b367f03773b3d7ea5bceb426e2e45a1ad0f7035f84a24b998947
+size 7
diff --git a/S2OJ/1665/data/permutation7.out b/S2OJ/1665/data/permutation7.out
new file mode 100644
index 00000000..2853e215
--- /dev/null
+++ b/S2OJ/1665/data/permutation7.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1ba1df1e6b546d2e48a414762f6bd10a7d00d4ad015205ee6398cf9a2b1fd63f
+size 8
diff --git a/S2OJ/1665/data/permutation8.in b/S2OJ/1665/data/permutation8.in
new file mode 100644
index 00000000..200d73d9
--- /dev/null
+++ b/S2OJ/1665/data/permutation8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:788fd027861e0793c4c7300db540a02a5ab5f5ab1e15c1b5cb5ba661818d2ffd
+size 7
diff --git a/S2OJ/1665/data/permutation8.out b/S2OJ/1665/data/permutation8.out
new file mode 100644
index 00000000..1f57be48
--- /dev/null
+++ b/S2OJ/1665/data/permutation8.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 10
diff --git a/S2OJ/1665/data/permutation9.in b/S2OJ/1665/data/permutation9.in
new file mode 100644
index 00000000..13e05173
--- /dev/null
+++ b/S2OJ/1665/data/permutation9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:085c348f64a3b543e973a33749e90ba20847b99016a87e5228847597d61ce582
+size 8
diff --git a/S2OJ/1665/data/permutation9.out b/S2OJ/1665/data/permutation9.out
new file mode 100644
index 00000000..1656cb19
--- /dev/null
+++ b/S2OJ/1665/data/permutation9.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/1665/data/problem.conf b/S2OJ/1665/data/problem.conf
new file mode 100644
index 00000000..2a244c3e
--- /dev/null
+++ b/S2OJ/1665/data/problem.conf
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:81fc781dff764d272b4650f8ca2fff130a4d1896c0b6f4f299c22fc8df18e1a5
+size 191