Last active
April 24, 2020 20:45
-
-
Save mfornet/173bca53b5ea907d3988336065204816 to your computer and use it in GitHub Desktop.
Seats required for n validators
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
def tPoS(tokens, seats): | |
lo, hi = 0, 1 | |
def get_seats(value): | |
total = 0 | |
for tok in tokens: | |
total += tok // value | |
return total | |
while get_seats(hi) >= seats: | |
hi *= 2 | |
while lo + 1 < hi: | |
mid = (lo + hi) // 2 | |
if get_seats(mid) >= seats: | |
lo = mid | |
else: | |
hi = mid | |
return lo | |
def run(max_token, expected_validator, s=1): | |
""" | |
s: Parameter from power lay | |
max_token: Number of token that has the validator with more tokens | |
""" | |
tokens = [int(max_token // k**s) for k in range(1, expected_validator + 1)] | |
lo, hi = 0, 1 | |
while tPoS(tokens, hi) > tokens[-1]: | |
hi *= 2 | |
while lo + 1 < hi: | |
mid = (lo + hi) // 2 | |
th = tPoS(tokens, mid) | |
if tPoS(tokens, mid) < tokens[-1]: | |
hi = mid | |
else: | |
lo = mid | |
seats = hi | |
threshold = tPoS(tokens, seats) | |
print("seats:", seats) | |
print("min tokens:", tokens[-1]) | |
print("threshold:", threshold) | |
print("Tokens per validator") | |
for ix, token in enumerate(tokens): | |
print(f"{ix:>3} {token:>30}") | |
run(int(10**24), 100, s=1) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
seats: 483 | |
min tokens: 10000000000000000000000 | |
threshold: 9900990099009900990099 | |
Tokens per validator | |
0 1000000000000000000000000 | |
1 500000000000000000000000 | |
2 333333333333333333333333 | |
3 250000000000000000000000 | |
4 200000000000000000000000 | |
5 166666666666666666666666 | |
6 142857142857142857142857 | |
7 125000000000000000000000 | |
8 111111111111111111111111 | |
9 100000000000000000000000 | |
10 90909090909090909090909 | |
11 83333333333333333333333 | |
12 76923076923076923076923 | |
13 71428571428571428571428 | |
14 66666666666666666666666 | |
15 62500000000000000000000 | |
16 58823529411764705882352 | |
17 55555555555555555555555 | |
18 52631578947368421052631 | |
19 50000000000000000000000 | |
20 47619047619047619047619 | |
21 45454545454545454545454 | |
22 43478260869565217391304 | |
23 41666666666666666666666 | |
24 40000000000000000000000 | |
25 38461538461538461538461 | |
26 37037037037037037037037 | |
27 35714285714285714285714 | |
28 34482758620689655172413 | |
29 33333333333333333333333 | |
30 32258064516129032258064 | |
31 31250000000000000000000 | |
32 30303030303030303030303 | |
33 29411764705882352941176 | |
34 28571428571428571428571 | |
35 27777777777777777777777 | |
36 27027027027027027027027 | |
37 26315789473684210526315 | |
38 25641025641025641025641 | |
39 25000000000000000000000 | |
40 24390243902439024390243 | |
41 23809523809523809523809 | |
42 23255813953488372093023 | |
43 22727272727272727272727 | |
44 22222222222222222222222 | |
45 21739130434782608695652 | |
46 21276595744680851063829 | |
47 20833333333333333333333 | |
48 20408163265306122448979 | |
49 20000000000000000000000 | |
50 19607843137254901960784 | |
51 19230769230769230769230 | |
52 18867924528301886792452 | |
53 18518518518518518518518 | |
54 18181818181818181818181 | |
55 17857142857142857142857 | |
56 17543859649122807017543 | |
57 17241379310344827586206 | |
58 16949152542372881355932 | |
59 16666666666666666666666 | |
60 16393442622950819672131 | |
61 16129032258064516129032 | |
62 15873015873015873015873 | |
63 15625000000000000000000 | |
64 15384615384615384615384 | |
65 15151515151515151515151 | |
66 14925373134328358208955 | |
67 14705882352941176470588 | |
68 14492753623188405797101 | |
69 14285714285714285714285 | |
70 14084507042253521126760 | |
71 13888888888888888888888 | |
72 13698630136986301369863 | |
73 13513513513513513513513 | |
74 13333333333333333333333 | |
75 13157894736842105263157 | |
76 12987012987012987012987 | |
77 12820512820512820512820 | |
78 12658227848101265822784 | |
79 12500000000000000000000 | |
80 12345679012345679012345 | |
81 12195121951219512195121 | |
82 12048192771084337349397 | |
83 11904761904761904761904 | |
84 11764705882352941176470 | |
85 11627906976744186046511 | |
86 11494252873563218390804 | |
87 11363636363636363636363 | |
88 11235955056179775280898 | |
89 11111111111111111111111 | |
90 10989010989010989010989 | |
91 10869565217391304347826 | |
92 10752688172043010752688 | |
93 10638297872340425531914 | |
94 10526315789473684210526 | |
95 10416666666666666666666 | |
96 10309278350515463917525 | |
97 10204081632653061224489 | |
98 10101010101010101010101 | |
99 10000000000000000000000 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment