diff --git a/ybt/1284/1284.cpp b/ybt/1284/1284.cpp
new file mode 100644
index 00000000..d583c309
--- /dev/null
+++ b/ybt/1284/1284.cpp
@@ -0,0 +1,36 @@
+#include <cstring>
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 105;
+
+int t, n, m, g[N][N], f[N][N];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+
+    cin >> t;
+    while (t--) {
+        memset(f, 0x00, sizeof(f));
+
+        cin >> n >> m;
+        for (int i = 1; i <= n; i++) {
+            for (int j = 1; j <= m; j++) {
+                cin >> g[i][j];
+            }
+        }
+
+        for (int i = 1; i <= n; i++) {
+            for (int j = 1; j <= m; j++) {
+                f[i][j] = std::max(f[i - 1][j], f[i][j - 1]) + g[i][j];
+            }
+        }
+
+        cout << f[n][m] << endl;
+    }
+
+    return 0;
+}