diff --git a/main.py b/main.py
index d6b6575..89bb472 100644
--- a/main.py
+++ b/main.py
@@ -1,3 +1,39 @@
 #!/usr/bin/env python3
 
+import math
+
 print("#hashcode2016")
+
+X = 0 # Nb rows
+Y = 0 # Nb columns
+D = 0 # Nb drones
+T = 0 # Deadline
+M = 0 # Maximum load
+P = 0 # Nb products
+W = 0 # Nb warehouses
+C = 0 # Nb customers
+
+Dp = []; # Positions of drones
+# (x, y)
+Di = []; # Items of drones
+# {product number: qt}
+Dd = []; # Turn avaibility of drone
+# int 
+
+Pw = []; # Weight of products
+# int
+
+Wp = []; # Positions of warehouses
+# (x, y)
+Wi = []; # Items of warehouses
+# {product number: qt}
+
+Cp = []; # Positions of customers
+# (x, y)
+Ci = []; # Needs of customers
+# {product number: qt}
+
+def distance(A, B):
+    return math.ceil(sqrt(pow((B[0] - A[0], 2) + pow(B[1] - A[1], 2))))
+
+