complete 13334.rs 20207.rs

storage/zeta/rs/completed/20207.rs

@@ -0,0 +1,46 @@
+use std::cmp::max;
+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 n = iter.next().unwrap();
+
+    let mut schedules = (0..n)
+        .map(|_| (iter.next().unwrap(), iter.next().unwrap()))
+        .collect::<Vec<(usize, usize)>>();
+
+    schedules.sort_by_key(|x| x.0);
+
+    let mut calendar = vec![0usize; 366];
+    for &(s, e) in schedules.iter() {
+        for i in s..=e {
+            calendar[i] += 1;
+        }
+    }
+
+    let mut local_max_height = 0;
+    let mut starting = 0;
+    let mut sheet_area = 0;
+    for (i, &c) in calendar.iter().enumerate() {
+        if c == 0 {
+            sheet_area += (i - starting) * local_max_height;
+            local_max_height = 0;
+        } else {
+            if local_max_height == 0 {
+                starting = i;
+            }
+
+            local_max_height = max(c, local_max_height);
+        }
+    }
+
+    if local_max_height > 0 {
+        sheet_area += (366 - starting) * local_max_height;
+    }
+
+    println!("{}", sheet_area);
+}