diff --git a/NFLSOJ/13244/13244.cpp b/NFLSOJ/13244/13244.cpp
new file mode 100644
index 00000000..f65df0c8
--- /dev/null
+++ b/NFLSOJ/13244/13244.cpp
@@ -0,0 +1,64 @@
+// #include <iostream>
+#include <algorithm>
+#include <cstring>
+#include <fstream>
+#include <utility>
+#include <vector>
+
+// using std::cin;
+// using std::cout;
+std::ifstream cin("rewrite.in");
+std::ofstream cout("rewrite.out");
+const char endl = '\n';
+
+const int N = 5005;
+
+int n;
+long long f[N][N][2];
+bool flag = false;
+std::pair<int, int> a[N];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> n;
+
+    for (int i = 1, l, r; i <= n; i++) {
+        cin >> a[i].first >> a[i].second;
+    }
+
+    if (n % 2) {
+        flag = true;
+    } else {
+        a[++n] = std::make_pair(0, 0);
+    }
+
+    memset(f, 0x3f, sizeof(f));
+    std::sort(a + 1, a + n + 1, [&](const std::pair<int, int> &lhs, const std::pair<int, int> &rhs) -> bool { return lhs.second - lhs.first > rhs.second - rhs.first; });
+
+    f[0][0][0] = 0;
+    for (int i = 1; i <= n; i++) {
+        if (i == n || flag) {
+            for (int j = 0; j <= i; j++) {
+                f[i][j][1] = f[i - 1][j][0] + static_cast<long long>(n >> 1) * (a[i].second - a[i].first);
+            }
+        }
+
+        for (int j = 0; j <= i; j++) {
+            if (j) {
+                f[i][j][0] = std::min(f[i][j][0], f[i - 1][j - 1][0] + static_cast<long long>(j - 1) * (a[i].second - a[i].first) + a[i].second);
+                f[i][j][1] = std::min(f[i][j][1], f[i - 1][j - 1][1] + static_cast<long long>(j - 1) * (a[i].second - a[i].first) + a[i].second);
+            }
+
+            if (j != i) {
+                f[i][j][0] = std::min(f[i][j][0], f[i - 1][j][0] + static_cast<long long>(i - j - 1) * (a[i].second - a[i].first) - a[i].first);
+                f[i][j][1] = std::min(f[i][j][1], f[i - 1][j][1] + static_cast<long long>(i - j - 2) * (a[i].second - a[i].first) - a[i].first);
+            }
+        }
+    }
+
+    cout << f[n][n >> 1][1] << endl;
+
+    return 0;
+}
diff --git a/NFLSOJ/13244/samples/ex_rewrite1.in b/NFLSOJ/13244/samples/ex_rewrite1.in
new file mode 100644
index 00000000..43487eb3
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0880b9669fa6d82f7223ec67bc09b247ed598249020bd967e01c7f5dd42818aa
+size 6
diff --git a/NFLSOJ/13244/samples/ex_rewrite1.out b/NFLSOJ/13244/samples/ex_rewrite1.out
new file mode 100644
index 00000000..804fcc90
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9a271f2a916b0b6ee6cecb2426f0b3206ef074578be55d9bc94f6f3fe3ab86aa
+size 2
diff --git a/NFLSOJ/13244/samples/ex_rewrite2.in b/NFLSOJ/13244/samples/ex_rewrite2.in
new file mode 100644
index 00000000..e2eaab6d
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7430fad08805d1f25cc58a2979d818637281cef19f9e84d67de1b91fcc45262b
+size 18
diff --git a/NFLSOJ/13244/samples/ex_rewrite2.out b/NFLSOJ/13244/samples/ex_rewrite2.out
new file mode 100644
index 00000000..06d04c2c
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite2.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aa67a169b0bba217aa0aa88a65346920c84c42447c36ba5f7ea65f422c1fe5d8
+size 2
diff --git a/NFLSOJ/13244/samples/ex_rewrite3.in b/NFLSOJ/13244/samples/ex_rewrite3.in
new file mode 100644
index 00000000..45a5082c
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b2cb1aaddda03e95c4a1c58edaf9ceacd794c05c87903b8c366f57d84960b9a9
+size 385
diff --git a/NFLSOJ/13244/samples/ex_rewrite3.out b/NFLSOJ/13244/samples/ex_rewrite3.out
new file mode 100644
index 00000000..3d278ce1
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite3.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7f063ddc9465871b106b29b9358227628ec34ddf99a2d73f523decd70a2792e5
+size 13
diff --git a/NFLSOJ/13244/samples/ex_rewrite4.in b/NFLSOJ/13244/samples/ex_rewrite4.in
new file mode 100644
index 00000000..74e53ce5
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:596a6c2fb8ac5663ef5710a1c8a00c28c3da129fcd24c638eaae1b2e72f05f2a
+size 42463
diff --git a/NFLSOJ/13244/samples/ex_rewrite4.out b/NFLSOJ/13244/samples/ex_rewrite4.out
new file mode 100644
index 00000000..4f87ad45
--- /dev/null
+++ b/NFLSOJ/13244/samples/ex_rewrite4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:88427cbe4816023bd282c3f34855aaab4ec25068619363018af8a5da35d72d24
+size 17