a=10
b=16
c=20

if( # missing part 1 # ):
    print("a")
elif( # missing part 2 #):
    print("b")
else:
     print("c")

X = 12

if (X > 10 & X < 15):
print('YES')
else:
print('No')

# List of order ID’s which are processed 
processed_orders = [1152, 1154, 1155, 1156, 1157, 1160, 1161, 1162, 1166, 1169, 1170, 1172, 1176, 1050, 1178, 1051, 1052, 1054, 1058, 1060, 1061, 1062, 1065, 1066, 1067, 1068, 1069, 1076, 1077, 1080, 1081, 1083, 1091, 1085, 1088, 1089, 1131, 1092, 1094, 1095, 1099, 1102, 1103, 1104, 1106, 1107, 1108, 1109, 1111, 1117, 1119, 1121, 1150, 1128, 1129, 1136, 1137, 1139, 1140, 1141, 1144, 1148, 1124]

# List of order ID’s which are returned
returned_orders = [1153, 1158, 1159, 1163, 1164, 1165, 1167, 1168, 1171, 1173, 11

d = {'Python':40, 'R':45}
print(list(d.keys()))

nums = set([1,1,2,3,3,3,4])
print(len(nums))