s1049

src/s1049_last_stone_weight_ii.cpp

@@ -0,0 +1,15 @@
+#include "s1049_last_stone_weight_ii.hpp"
+
+int S1049::lastStoneWeightII(vector<int>& stones) {
+  int total{0};
+  int len = stones.size();
+  vector<int> dp(30 * 1000 / 2 + 1, 0);
+  for (int i{0}; i < len; ++i) total += stones[i];
+  int limit = total >> 1;
+  for (int i{0}; i < len; ++i) {
+    for (int j = limit; j >= stones[i]; --j) {
+      dp[j] = max(dp[j], dp[j - stones[i]] + stones[i]);
+    }
+  }
+  return total - dp[limit] * 2;
+}