'commit'

TangDou/LanQiaoBei/LanQiao14STEMA202212/TD.cpp

@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+using namespace std;
+const int N = 100;
+int a[N];
+int n, k, res;
+
+void dfs(int u, int k, int last, int sum) {
+    if (k == 0) {
+        res = max(res, sum);
+        return;
+    }
+    if (u == n + 1) return;
+
+    if (a[u] >= last)
+        dfs(u + 1, k - 1, a[u], sum + a[u]);
+    dfs(u + 1, k, last, sum);
+}
+int main() {
+    cin >> n >> k;
+    for (int i = 1; i <= n; i++) cin >> a[i];
+    dfs(1, k, 0, 0);
+    cout << res;
+    return 0;
+}