20240206 Finished

src/problem/lcp30_magic_tower.rs

@@ -0,0 +1,49 @@
+pub struct Solution {}
+
+use std::collections::BinaryHeap;
+use std::cmp::Reverse;
+
+impl Solution {
+    pub fn magic_tower(nums: Vec<i32>) -> i32 {
+        let mut heap = BinaryHeap::new();
+
+        let mut count = 0;
+        let (mut now, mut delay) = (1i64, 0i64);
+
+        for num in nums {
+            if num < 0 {
+                heap.push(Reverse(num));
+            }
+
+            now += num as i64;
+            if now <= 0 {
+                count += 1;
+
+                let m = heap.pop().unwrap().0 as i64;
+                now -= m;
+                delay += m;
+            }
+        }
+
+        now += delay;
+
+        if now <= 0 {
+            -1
+        } else {
+            count
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_lcp30() {
+        assert_eq!(Solution::magic_tower(
+            vec![100,100,100,-250,-60,-140,-50,-50,100,150]), 1);
+        assert_eq!(Solution::magic_tower(
+            vec![-200,-300,400,0]), -1);
+    }
+}

src/problem/mod.rs

@@ -39,3 +39,4 @@ mod p1686_stone_game_vi;
 mod p1690_stone_game_vii;
 mod p292_nim_game;
 mod p1696_jump_game_vi;
+mod lcp30_magic_tower;