complete @jungol 1006.rs 1828.rs

storage/jungol/rs/completed/1828.rs

@@ -0,0 +1,28 @@
+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::<i32>().unwrap());
+
+    let n = iter.next().unwrap() as usize;
+
+    let mut chems = (0..n)
+        .map(|_| (iter.next().unwrap(), iter.next().unwrap()))
+        .collect::<Vec<_>>();
+
+    chems.sort_by_key(|x| x.1);
+
+    let mut pin = chems[0].1;
+    let mut cnt = 1;
+
+    for (x, y) in chems {
+        if x > pin {
+            cnt += 1;
+            pin = y;
+        }
+    }
+
+    println!("{}", cnt);
+}