20241025 finished.

src/problem/mod.rs

@@ -274,3 +274,5 @@ mod p910_smallest_range_ii;
 mod p977_squares_of_a_sorted_array;
 mod p983_minimum_cost_for_tickets;
 mod p997_find_the_town_judge;
+
+mod p3180_maximum_total_reward_using_operations_i;

src/problem/p3180_maximum_total_reward_using_operations_i.rs

@@ -0,0 +1,48 @@
+/**
+ * [3180] Maximum Total Reward Using Operations I
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn max_total_reward(reward_values: Vec<i32>) -> i32 {
+        let mut reward_values: Vec<usize> = reward_values.into_iter().map(|x| x as usize).collect();
+        reward_values.sort();
+
+        let max_value = *reward_values.last().unwrap();
+        let mut dp = vec![false; max_value * 2];
+        dp[0] = true;
+
+        for &x in reward_values.iter() {
+            for i in (x..=(2 * x - 1)).rev() {
+                if dp[i - x] {
+                    dp[i] = true;
+                }
+            }
+        }
+
+        let mut result = 0;
+
+        for (i, &x) in dp.iter().enumerate() {
+            if x {
+                result = i;
+            }
+        }
+
+        result as i32
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_3180() {
+        assert_eq!(4, Solution::max_total_reward(vec![1, 1, 3, 3]));
+        assert_eq!(11, Solution::max_total_reward(vec![1, 6, 4, 3, 2]));
+    }
+}