Upload via code

FZOI/「NOIP2001」数的划分.cpp

@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+#define int long long
+using namespace std;
+
+int n, k, cnt;
+
+void dfs(int last, int sum, int cur)
+{
+    if (cur == k)
+    {
+        if (sum == n)
+            cnt++;
+        return;
+    }
+    for (int i = last; sum + i * (k - cur) <= n; i++)
+        dfs(i, sum + i, cur + 1);
+}
+
+signed main()
+{
+    cin >> n >> k ;
+    dfs(1, 0, 0);
+    cout << cnt ;
+}