diff --git a/S2OJ/1486/1486.cpp b/S2OJ/1486/1486.cpp
new file mode 100644
index 00000000..63cda4ba
--- /dev/null
+++ b/S2OJ/1486/1486.cpp
@@ -0,0 +1,75 @@
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 2e5 + 5,
+          K = 55;
+const int mod = 1e9 + 7;
+
+int m, k, d, cnt;
+long long f[K][K], p[N][K], s[N][K], sum;
+
+long long binpow(long long a, long long b) {
+    a %= mod;
+
+    long long res = 1;
+
+    while (b) {
+        if (b & 1) res = res * a % mod;
+        a = a * a % mod;
+        b >>= 1;
+    }
+
+    return res;
+}
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> m >> k;
+
+    f[0][0] = 1;
+    for (int i = 1; i <= k; i++) {
+        f[i][0] = 1;
+
+        for (int j = 1; j <= i; j++) {
+            f[i][j] = (f[i - 1][j - 1] + f[i - 1][j]) % mod;
+        }
+    }
+
+    while (m--) {
+        int op;
+
+        cin >> op;
+
+        if (op == 0) {
+            int x;
+
+            cin >> x;
+
+            p[++cnt][0] = 1;
+            s[cnt][0] = (s[cnt - 1][0] + p[cnt][0]) % mod;
+
+            for (int i = 1; i <= k; i++) {
+                p[cnt][i] = (p[cnt][i - 1] * (x - d) % mod + mod) % mod;
+                s[cnt][i] = (s[cnt - 1][i] + p[cnt][i]) % mod;
+            }
+
+            sum = (sum + binpow(x, k)) % mod;
+        } else {  // op == 1
+            d++;
+
+            sum = 0;
+            for (int i = 0; i <= k; i++) {
+                sum = (sum + f[k][i] * binpow(d, i) % mod * s[cnt][k - i] % mod) % mod;
+            }
+        }
+
+        cout << sum << endl;
+    }
+
+    return 0;
+}
diff --git a/S2OJ/1486/data/problem.conf b/S2OJ/1486/data/problem.conf
new file mode 100644
index 00000000..44f9b1aa
--- /dev/null
+++ b/S2OJ/1486/data/problem.conf
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:845952a9aec741e791239d6248f1f6ee4ec8a208b8733f6a28999253bcf2dceb
+size 175
diff --git a/S2OJ/1486/data/set1.in b/S2OJ/1486/data/set1.in
new file mode 100644
index 00000000..ede1d1ae
--- /dev/null
+++ b/S2OJ/1486/data/set1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 978202
diff --git a/S2OJ/1486/data/set1.out b/S2OJ/1486/data/set1.out
new file mode 100644
index 00000000..407efeb6
--- /dev/null
+++ b/S2OJ/1486/data/set1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 1962018
diff --git a/S2OJ/1486/data/set10.in b/S2OJ/1486/data/set10.in
new file mode 100644
index 00000000..403734eb
--- /dev/null
+++ b/S2OJ/1486/data/set10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/1486/data/set10.out b/S2OJ/1486/data/set10.out
new file mode 100644
index 00000000..527c0bc8
--- /dev/null
+++ b/S2OJ/1486/data/set10.out
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1486/data/set2.in b/S2OJ/1486/data/set2.in
new file mode 100644
index 00000000..1b9d1c3c
--- /dev/null
+++ b/S2OJ/1486/data/set2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 14597
diff --git a/S2OJ/1486/data/set2.out b/S2OJ/1486/data/set2.out
new file mode 100644
index 00000000..cfee0cb7
--- /dev/null
+++ b/S2OJ/1486/data/set2.out
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+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/1486/data/set3.in b/S2OJ/1486/data/set3.in
new file mode 100644
index 00000000..6835e7ef
--- /dev/null
+++ b/S2OJ/1486/data/set3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/1486/data/set3.out b/S2OJ/1486/data/set3.out
new file mode 100644
index 00000000..03cbfafb
--- /dev/null
+++ b/S2OJ/1486/data/set3.out
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+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/1486/data/set4.in b/S2OJ/1486/data/set4.in
new file mode 100644
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--- /dev/null
+++ b/S2OJ/1486/data/set4.in
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new file mode 100644
index 00000000..87b1109e
--- /dev/null
+++ b/S2OJ/1486/data/set4.out
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diff --git a/S2OJ/1486/data/set5.in b/S2OJ/1486/data/set5.in
new file mode 100644
index 00000000..d16cc01c
--- /dev/null
+++ b/S2OJ/1486/data/set5.in
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diff --git a/S2OJ/1486/data/set5.out b/S2OJ/1486/data/set5.out
new file mode 100644
index 00000000..0faf7d08
--- /dev/null
+++ b/S2OJ/1486/data/set5.out
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diff --git a/S2OJ/1486/data/set6.in b/S2OJ/1486/data/set6.in
new file mode 100644
index 00000000..9472e4ca
--- /dev/null
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new file mode 100644
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diff --git a/S2OJ/1486/data/set7.in b/S2OJ/1486/data/set7.in
new file mode 100644
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new file mode 100644
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--- /dev/null
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