diff --git a/atcoder/beginner_contests/abc050/Cargo.lock b/atcoder/beginner_contests/abc050/Cargo.lock
new file mode 100644
index 0000000..223d379
--- /dev/null
+++ b/atcoder/beginner_contests/abc050/Cargo.lock
@@ -0,0 +1,25 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "abc050"
+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/abc050/Cargo.toml b/atcoder/beginner_contests/abc050/Cargo.toml
new file mode 100644
index 0000000..20d3986
--- /dev/null
+++ b/atcoder/beginner_contests/abc050/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "abc050"
+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/abc050/src/bin/a.rs b/atcoder/beginner_contests/abc050/src/bin/a.rs
new file mode 100644
index 0000000..dc3439f
--- /dev/null
+++ b/atcoder/beginner_contests/abc050/src/bin/a.rs
@@ -0,0 +1,19 @@
+use proconio::input;
+
+fn main() {
+    input! {
+        a: u32,
+        op: char,
+        b: u32,
+    }
+
+    let mut result = a as i32;
+
+    match op {
+        '+' => result += b as i32,
+        '-' => result -= b as i32,
+        _ => unreachable!(),
+    }
+
+    println!("{}", result);
+}
diff --git a/atcoder/beginner_contests/abc050/src/bin/b.rs b/atcoder/beginner_contests/abc050/src/bin/b.rs
new file mode 100644
index 0000000..2b74241
--- /dev/null
+++ b/atcoder/beginner_contests/abc050/src/bin/b.rs
@@ -0,0 +1,17 @@
+use proconio::input;
+
+fn main() {
+    input! {
+        n: usize,
+        ts: [i32; n],
+        m: usize,
+        pxs: [(i32, i32); m],
+    };
+
+    let max_time: i32 = ts.iter().sum();
+
+    for (p, x) in pxs {
+        let time_saved = ts[p as usize - 1] - x;
+        println!("{}", max_time - time_saved);
+    }
+}
diff --git a/atcoder/beginner_contests/abc050/src/bin/c.rs b/atcoder/beginner_contests/abc050/src/bin/c.rs
new file mode 100644
index 0000000..ee80563
--- /dev/null
+++ b/atcoder/beginner_contests/abc050/src/bin/c.rs
@@ -0,0 +1,3 @@
+fn main() {
+    unimplemented!();
+}
diff --git a/atcoder/beginner_contests/abc050/src/bin/d.rs b/atcoder/beginner_contests/abc050/src/bin/d.rs
new file mode 100644
index 0000000..ee80563
--- /dev/null
+++ b/atcoder/beginner_contests/abc050/src/bin/d.rs
@@ -0,0 +1,3 @@
+fn main() {
+    unimplemented!();
+}