# columns = ['i', 'j', 'weight', 'delay']
41.0	0.0	3.0	2.0
12.0	1.0	3.0	2.0
56.0	2.0	3.0	2.0
25.0	3.0	3.0	2.0
95.0	4.0	3.0	2.0
6.0	5.0	3.0	2.0
5.0	6.0	3.0	2.0
4.0	7.0	3.0	2.0
81.0	8.0	3.0	2.0
26.0	9.0	3.0	2.0
55.0	10.0	3.0	2.0
14.0	11.0	3.0	2.0
29.0	12.0	3.0	2.0
90.0	13.0	3.0	2.0
59.0	14.0	3.0	2.0
7.0	15.0	3.0	2.0
32.0	16.0	3.0	2.0
0.0	17.0	3.0	2.0
10.0	18.0	3.0	2.0
12.0	19.0	3.0	2.0
64.0	20.0	3.0	2.0
17.0	21.0	3.0	2.0
61.0	22.0	3.0	2.0
22.0	23.0	3.0	2.0
44.0	24.0	3.0	2.0
2.0	25.0	3.0	2.0
41.0	26.0	3.0	2.0
26.0	27.0	3.0	2.0
32.0	28.0	3.0	2.0
82.0	29.0	3.0	2.0
66.0	30.0	3.0	2.0
9.0	31.0	3.0	2.0
85.0	32.0	3.0	2.0
19.0	33.0	3.0	2.0
99.0	34.0	3.0	2.0
47.0	35.0	3.0	2.0
35.0	36.0	3.0	2.0
48.0	37.0	3.0	2.0
48.0	38.0	3.0	2.0
85.0	39.0	3.0	2.0
10.0	40.0	3.0	2.0
80.0	41.0	3.0	2.0
43.0	42.0	3.0	2.0
63.0	43.0	3.0	2.0
35.0	44.0	3.0	2.0
41.0	45.0	3.0	2.0
70.0	46.0	3.0	2.0
3.0	47.0	3.0	2.0
80.0	48.0	3.0	2.0
13.0	49.0	3.0	2.0
61.0	50.0	3.0	2.0
84.0	51.0	3.0	2.0
27.0	52.0	3.0	2.0
9.0	53.0	3.0	2.0
32.0	54.0	3.0	2.0
50.0	55.0	3.0	2.0
3.0	56.0	3.0	2.0
10.0	57.0	3.0	2.0
48.0	58.0	3.0	2.0
70.0	59.0	3.0	2.0
19.0	60.0	3.0	2.0
93.0	61.0	3.0	2.0
87.0	62.0	3.0	2.0
57.0	63.0	3.0	2.0
91.0	64.0	3.0	2.0
31.0	65.0	3.0	2.0
41.0	66.0	3.0	2.0
64.0	67.0	3.0	2.0
67.0	68.0	3.0	2.0
22.0	69.0	3.0	2.0
44.0	70.0	3.0	2.0
33.0	71.0	3.0	2.0
13.0	72.0	3.0	2.0
44.0	73.0	3.0	2.0
82.0	74.0	3.0	2.0
12.0	75.0	3.0	2.0
0.0	76.0	3.0	2.0
63.0	77.0	3.0	2.0
57.0	78.0	3.0	2.0
55.0	79.0	3.0	2.0
58.0	80.0	3.0	2.0
64.0	81.0	3.0	2.0
19.0	82.0	3.0	2.0
38.0	83.0	3.0	2.0
12.0	84.0	3.0	2.0
6.0	85.0	3.0	2.0
1.0	86.0	3.0	2.0
81.0	87.0	3.0	2.0
58.0	88.0	3.0	2.0
77.0	89.0	3.0	2.0
48.0	90.0	3.0	2.0
82.0	91.0	3.0	2.0
37.0	92.0	3.0	2.0
4.0	93.0	3.0	2.0
20.0	94.0	3.0	2.0
39.0	95.0	3.0	2.0
72.0	96.0	3.0	2.0
85.0	97.0	3.0	2.0
87.0	98.0	3.0	2.0
61.0	99.0	3.0	2.0