complete 14527.rs

storage/zeta/rs/completed/14527.rs

@@ -0,0 +1,52 @@
+use std::io::stdin;
+
+fn minimum_milking_time(mut cows: Vec<(i64, i64)>) -> i64 {
+    cows.sort_by_key(|x| x.1 );
+
+    let mut left = 0;
+    let mut right = cows.len() - 1;
+
+    let mut time_maxima = 0;
+
+    while left <= right {
+        let (left_count, left_milk) = cows[left];
+        let (right_count, right_milk) = cows[right];
+
+        if (left_count <= 0) {
+            left += 1;
+            continue;
+        }
+        if (right_count <= 0) {
+            right -= 1;
+            continue;
+        }
+
+        time_maxima = time_maxima.max(left_milk + right_milk);
+
+        cows[left].0 -= 1;
+        cows[right].0 -= 1;
+    } 
+    
+    time_maxima
+}
+
+fn main() {
+    let mut line = String::new();
+    stdin().read_line(&mut line).unwrap();
+
+    let n: usize = line.trim().parse().unwrap();
+    let cows = (0..n).map(
+        |_| {
+            line.clear();
+            stdin().read_line(&mut line).unwrap();
+            let mut iter = line
+                .trim()
+                .split(' ')
+                .map(|x| x.parse::<i64>().unwrap());
+            
+            (iter.next().unwrap(), iter.next().unwrap())
+        }
+    ).collect::<Vec<(i64, i64)>>();
+
+    println!("{}", minimum_milking_time(cows));
+}