Hack challenge

Steal those 5 Ethers at https://ropsten.etherscan.io/address/0x836D81C4765e7D0368c30fc54d5F67D7ab0B7ea3

Goals

• See the danger of updating state after an untrusted interaction.
• Be warned of and exploit the reentrance pattern.

Notes

• Yes, in function put, there is a typo =, do not fix it.