add: 220624

cpp/2206/220624.cpp

@@ -0,0 +1,43 @@
+#include <vector>
+#include <queue>
+#include <numeric>
+#include <iostream>
+
+/**
+ * 1354. Construct Target Array With Multiple Sums
+ * You are given an array target of n integers. From a starting array arr consisting of n 1's, you may perform the following procedure :
+ * - let x be the sum of all elements currently in your array.
+ * - choose index i, such that 0 <= i < n and set the value of arr at index i to x.
+ * - You may repeat this procedure as many times as needed.
+ * Return true if it is possible to construct the target array from arr, otherwise, return false.
+ */
+
+class Solution {
+public:
+	static bool isPossible(const std::vector<int>& target) {
+		if (target.size() == 1 && target[0] != 1)
+			return false;
+
+		std::priority_queue<int> q(target.begin(), target.end());
+		auto sum = std::accumulate(target.begin(), target.end(), 0LL);
+		while (q.top() > 1) {
+			long long x = q.top();
+			q.pop();
+			long long y = q.top(), delta = sum - x;
+
+			if (x - delta < 1)
+				return false;
+			long long nx = x - ((x - y) / delta + ((x - y) % delta ? 1 : 0)) * delta;
+			if (nx < 1)
+				nx += delta;
+			q.push(nx);
+			sum = sum - x + nx;
+		}
+		return true;
+	}
+};
+
+int main() {
+	std::cout << Solution::isPossible({1,1,10});
+	return 0;
+}

cpp/2206/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2206)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2206 220623.cpp)
+ADD_EXECUTABLE(2206 220624.cpp)