diff --git a/17.12.py b/17.12.py
new file mode 100644
index 0000000..6f20b33
--- /dev/null
+++ b/17.12.py
@@ -0,0 +1,38 @@
+def sparce_matrix(func):
+
+    def _sparce_matrix(*args):
+        zeros = 0
+        y = func(*args)
+        for row in y:
+            zeros += row.count(0)
+
+        if zeros >= round(0.9*len(y[0])*len(y)):
+            return {(y.index(row)+1, row.index(i)+1): 
+                    i for row in y for i in row if i > 0}
+        return y
+    
+    return _sparce_matrix
+
+
+def input_matrix(n, m):
+    matrix = [[0 for pos in range(m)] for row in range(n)]
+    for i in range(n):
+        for j in range(m):
+            matrix[i][j] = int(input(f'M({i+1}, {j+1})'))
+
+    return matrix
+
+@sparce_matrix
+def matrix_sum(a, b):
+    if len(a) != len(b) or len(a[0]) != len(b[0]):
+        raise Exception
+    
+    for i in range(len(a)):
+        for j in range(len(a[0])):
+            a[i][j] += b[i][j]
+    return a
+
+if __name__ == '__main__':
+    a = input_matrix(3, 2)
+    b = input_matrix(3, 2)
+    print(matrix_sum(a, b))