diff --git a/atcoder/beginner_contests/abc257/Cargo.lock b/atcoder/beginner_contests/abc257/Cargo.lock
new file mode 100644
index 0000000..c1080f1
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/Cargo.lock
@@ -0,0 +1,25 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "abc257"
+version = "0.1.0"
+dependencies = [
+ "proconio",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "proconio"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91c333be3af2936f8e810300bc74fe4d0cc168ebc04ab02a28c5b1060fa1bd59"
+dependencies = [
+ "lazy_static",
+]
diff --git a/atcoder/beginner_contests/abc257/Cargo.toml b/atcoder/beginner_contests/abc257/Cargo.toml
new file mode 100644
index 0000000..52c11f2
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "abc257"
+version = "0.1.0"
+edition = "2021"
+
+# dependencies added to new project
+[dependencies]
+proconio = "0.4.3"
+
+[profile.release]
+lto = true
+panic = 'abort'
diff --git a/atcoder/beginner_contests/abc257/src/bin/a.rs b/atcoder/beginner_contests/abc257/src/bin/a.rs
new file mode 100644
index 0000000..fa61977
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/a.rs
@@ -0,0 +1,15 @@
+use proconio::input;
+
+fn main() {
+    input!{
+        n: f32,
+        x: f32,
+    };
+
+    let l = x / n;
+    let c = l.ceil() - 1.;
+
+    let chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+    println!("{}", chars.chars().nth(c as usize).unwrap());
+}
diff --git a/atcoder/beginner_contests/abc257/src/bin/b.rs b/atcoder/beginner_contests/abc257/src/bin/b.rs
new file mode 100644
index 0000000..4a908ae
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/b.rs
@@ -0,0 +1,34 @@
+use proconio::input;
+
+fn main() {
+    input!{
+        n: usize,
+        k: usize,
+        q: usize,
+        a: [usize; k],
+        l: [usize; q],
+    };
+
+    let mut board = vec![false; n];
+    let mut positions = vec![0; k];
+    let mut p = 0;
+
+    for pos in a {
+        board[pos - 1] = true;
+        positions[p] = pos - 1;
+        p += 1;
+    }
+
+    for turn in l {
+        let pos = positions[turn - 1];
+        if pos != n - 1 && !board[pos + 1] {
+            board[pos] = false;
+            board[pos + 1] = true;
+            positions[turn - 1] = pos + 1; 
+        }
+    }
+
+    for pos in positions {
+        print!("{} ", pos + 1);
+    } print!("\n");
+}
diff --git a/atcoder/beginner_contests/abc257/src/bin/c.rs b/atcoder/beginner_contests/abc257/src/bin/c.rs
new file mode 100644
index 0000000..bb4a5ba
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/c.rs
@@ -0,0 +1,11 @@
+use proconio::input;
+
+fn main() {
+    input!{
+        n: usize,
+        s: String,
+        w: [u64; n],
+    };
+
+    
+}
diff --git a/atcoder/beginner_contests/abc257/src/bin/d.rs b/atcoder/beginner_contests/abc257/src/bin/d.rs
new file mode 100644
index 0000000..f329649
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/d.rs
@@ -0,0 +1,5 @@
+use proconio::input;
+
+fn main() {
+    todo!();
+}
diff --git a/atcoder/beginner_contests/abc257/src/bin/e.rs b/atcoder/beginner_contests/abc257/src/bin/e.rs
new file mode 100644
index 0000000..f329649
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/e.rs
@@ -0,0 +1,5 @@
+use proconio::input;
+
+fn main() {
+    todo!();
+}
diff --git a/atcoder/beginner_contests/abc257/src/bin/ex.rs b/atcoder/beginner_contests/abc257/src/bin/ex.rs
new file mode 100644
index 0000000..f329649
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/ex.rs
@@ -0,0 +1,5 @@
+use proconio::input;
+
+fn main() {
+    todo!();
+}
diff --git a/atcoder/beginner_contests/abc257/src/bin/f.rs b/atcoder/beginner_contests/abc257/src/bin/f.rs
new file mode 100644
index 0000000..f329649
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/f.rs
@@ -0,0 +1,5 @@
+use proconio::input;
+
+fn main() {
+    todo!();
+}
diff --git a/atcoder/beginner_contests/abc257/src/bin/g.rs b/atcoder/beginner_contests/abc257/src/bin/g.rs
new file mode 100644
index 0000000..f329649
--- /dev/null
+++ b/atcoder/beginner_contests/abc257/src/bin/g.rs
@@ -0,0 +1,5 @@
+use proconio::input;
+
+fn main() {
+    todo!();
+}