https://colab.research.google.com/drive/1sMWQ3CljlXCEHdvrZr8YMJc824gqcVNW
https://colab.research.google.com/drive/1VOiE7b5ZOGXMzQNchS842Y_ceiEvaUL6
https://colab.research.google.com/drive/10Lc23Qv7laUNa7NU3KuQAFX6EQh6flpb
https://colab.research.google.com/drive/1uY_COCsJBQ2TvEkD5Er5T4eX3vR6H3e3
https://colab.research.google.com/drive/141b4DQU6IlJkVrTI3zlDyYrdal_2BDRM
https://colab.research.google.com/drive/1dwTXO683maZvXpWW0VMOf6kHCbpsxsoK
https://pastebin.com/mV427WrB
http://cpp.sh/25mn4