import math as mt
stringLength = 5.6
weight = 0.0424
k = 6.9013112
for i in range(100):
PE = stringLength*weight
stringLength = 5.6 - mt.sqrt(2*PE/k)
print(stringLength)
aW1wb3J0IG1hdGggYXMgbXQKc3RyaW5nTGVuZ3RoID0gNS42CndlaWdodCA9IDAuMDQyNAprID0gNi45MDEzMTEyCmZvciBpIGluIHJhbmdlKDEwMCk6CglQRSA9IHN0cmluZ0xlbmd0aCp3ZWlnaHQKCXN0cmluZ0xlbmd0aCA9IDUuNiAtIG10LnNxcnQoMipQRS9rKQpwcmludChzdHJpbmdMZW5ndGgp