2411. Mondriaan's Dream

23522528

POJ/2411/2411.cpp

@@ -0,0 +1,48 @@
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+int n, m;
+long long f[12][1 << 11];
+bool g[1 << 11];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+
+    while (cin >> n >> m, n || m) {
+        for (int i = 0; i < 1 << m; i++) {
+            bool cnt = false,
+                 has_odd = false;
+
+            for (int j = 0; j < m; j++) {
+                if (i >> j & 1) {
+                    has_odd |= cnt;
+                    cnt = false;
+                } else {
+                    cnt ^= true;
+                }
+            }
+
+            g[i] = !(has_odd | cnt);
+        }
+
+        f[0][0] = 1;
+        for (int i = 1; i <= n; i++) {
+            for (int j = 0; j < 1 << m; j++) {
+                f[i][j] = 0;
+
+                for (int k = 0; k < 1 << m; k++) {
+                    if (!(j & k) && g[j | k]) {
+                        f[i][j] += f[i - 1][k];
+                    }
+                }
+            }
+        }
+
+        cout << f[n][0] << endl;
+    }
+
+    return 0;
+}