solutions: 580A

solutions/rust/src/bin/580A.rs

@@ -0,0 +1,28 @@
+use std::io;
+
+fn main() {
+    let mut s = String::new();
+    io::stdin().read_line(&mut s).unwrap();
+    let n = s.trim().parse::<usize>().unwrap(); 
+
+    let mut s = String::new();
+    io::stdin().read_line(&mut s).unwrap();
+
+    let a = s.trim().split_whitespace().map(|n| n.parse::<u64>().unwrap()).collect::<Vec<u64>>();
+
+    let mut maximum = 1;
+    let mut count = 1;
+
+    for i in 1..n {
+        if a[i] >= a[i-1] {
+            count += 1;
+            if count > maximum {
+                maximum = count;
+            }
+        } else {
+            count = 1;
+        }
+    }
+
+    println!("{}", maximum);
+}