complete 7604.cpp 1267.rs 8760.rs

storage/zeta/rs/completed/8760.rs

@@ -0,0 +1,27 @@
+use std::io::{read_to_string, stdin};
+
+fn main() {
+    let temp = read_to_string(stdin()).unwrap();
+    let mut iter = temp
+        .split_ascii_whitespace()
+        .map(|x| x.parse::<usize>().unwrap());
+
+    let z = iter.next().unwrap();
+
+    (0..z).for_each(|_| {
+        let (w, k) = (iter.next().unwrap(), iter.next().unwrap());
+
+        let w_r = w % 2;
+        let k_r = k % 2;
+
+        let res = if w_r == 0 {
+            w * k / 2
+        } else if k_r == 0 {
+            w * k / 2
+        } else {
+            w * (k - 1) / 2 + (w - 1) / 2
+        };
+
+        println!("{}", res);
+    });
+}