1 files changed, 53 insertions, 0 deletions

diff --git a/01_introductory_problems/two_sets_1092.cpp b/01_introductory_problems/two_sets_1092.cpp
new file mode 100644
index 0000000..4314654
--- /dev/null
+++ b/01_introductory_problems/two_sets_1092.cpp
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <vector>
+
+void printarr(const std::vector<int>& a) {
+        std::cout << a.size() << std::endl;
+        for (auto x : a)
+                std::cout << x << " ";
+        std::cout << std::endl;
+}
+
+int main() {
+        int n;
+        std::cin >> n;
+
+        switch (n % 4) {
+        case 1:
+        case 2:
+                std::cout << "NO\n";
+                break;
+        case 0:
+                std::cout << "YES\n";
+                {
+                        std::vector<int> a(n/2), b(n/2);
+                        for (int i = 0; i < n/4; i++) {
+                                a[2*i] = 4*i+1;
+                                a[2*i+1] = 4*i+4;
+                                b[2*i] = 4*i+2;
+                                b[2*i+1] = 4*i+3;
+                        }
+                        printarr(a);
+                        printarr(b);
+                }
+                break;
+        case 3:
+                std::cout << "YES\n";
+                if (n == 3) {
+                        std::cout << "2\n1 2\n1\n3\n";
+                } else {
+                        std::vector<int> a(n/2+1), b(n/2);
+                        a[0] = 1; a[1] = 2; a[2] = 4; a[3] = 7;
+                        b[0] = 3; b[1] = 5; b[2] = 6;
+                        for (int i = 1; i < n/4; i++) {
+                                a[2*i+2] = 4*i+4;
+                                a[2*i+3] = 4*i+7;
+                                b[2*i+1] = 4*i+5;
+                                b[2*i+2] = 4*i+6;
+                        }
+                        printarr(a);
+                        printarr(b);
+                }
+                break;
+        }
+}