Precreation contest files

misc/tlbdhsg/b20.cpp

@@ -0,0 +1,22 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  int n, x, k;
+  cin >> n >> k >> x;
+  cout << n + 1 << '\n';
+  k--;
+  while (n--) {
+    int a;
+    cin >> a;
+    cout << a << ' ';
+    k--;
+    if (!k)
+      cout << x << ' ';
+  }
+  cout << '\n';
+}