f=lambda x:[[i,(20*x[x.find(i):x.find('_')].count('\n'))**.5]for i in x if i.isdigit()]
print(f("""
1 5 2
6 3
4
7
__________________________"""))
print(f("""
1 5 2
3
4
__________________________
"""))
Standard input is empty
[['1', 10.0], ['5', 10.0], ['2', 10.0], ['6', 8.94427190999916], ['3', 8.94427190999916], ['4', 7.745966692414834], ['7', 6.324555320336759]] [['1', 10.0], ['5', 10.0], ['2', 10.0], ['3', 8.94427190999916], ['4', 7.745966692414834]]