ABC 045, not finished yet, got idea for c

atcoder/beginner_contests/abc045/src/bin/a.rs

@@ -0,0 +1,13 @@
+use proconio::input;
+
+fn main() {
+    input!{
+        a: u16,
+        b: u16,
+        h: u16,
+    };
+
+    let result = h * (a + b) / 2;
+
+    println!("{}", {result});
+}