add cf round-1087-{A,B,C}.rs

storage/cf/rs/round-1087-B.rs

@@ -0,0 +1,37 @@
+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::<i64>().unwrap());
+
+    let t = iter.next().unwrap();
+    (0..t).for_each(|_| {
+        let n = iter.next().unwrap() as usize;
+        let arr = (0..n).map(|_| iter.next().unwrap()).collect::<Vec<_>>();
+
+        // if n == 1 return 0
+        for i in 0..n {
+            if i == n - 1 {
+                print!("{} ", 0);
+                continue;
+            }
+
+            let key = arr[i];
+
+            let mut cnt_lo = 0;
+            let mut cnt_hi = 0;
+
+            for &e in arr[(i + 1)..n].iter() {
+                if e > key {
+                    cnt_hi += 1;
+                } else if e < key {
+                    cnt_lo += 1;
+                }
+            }
+            print!("{} ", std::cmp::max(cnt_lo, cnt_hi));
+        }
+        println!();
+    });
+}