E - Omkar and Duck

https://codeforces.com/contest/1392/submission/190463285

Codeforces/1392/E/E.cpp

@@ -0,0 +1,47 @@
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 30;
+
+int n, q;
+long long a[N][N];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+
+    cin >> n;
+
+    for (int i = 0; i < n; i++) {
+        for (int j = 0; j < n; j++) {
+            cout << ((i & 1ll) << (i + j)) << ' ';
+        }
+
+        cout << endl;
+    }
+
+    cout << std::flush;
+
+    cin >> q;
+
+    while (q--) {
+        long long x;
+
+        cin >> x;
+
+        int xx = 0, yy = 0;
+
+        cout << 1 << ' ' << 1 << endl;
+
+        for (int i = 1; i <= n * 2 - 2; i++) {
+            if (((x >> i) & 1) == (xx & 1)) yy++;
+            else xx++;
+
+            cout << xx + 1 << ' ' << yy + 1 << endl;
+        }
+
+        cout << std::flush;
+    }
+}