lec.1

https://drive.google.com/file/d/1kJ66id_0JKCbDaH17iEN8fE2II-3T0PN/view?usp=sharing

lec.2

https://drive.google.com/file/d/1ff1cTcM94F1gZr4pA31CLFxIas7jK80u/view?usp=sharing

lec.3

https://drive.google.com/file/d/1LN8cJOGGUQVEkt9Of_eYIJ3FLvIOY2Tg/view?usp=sharing

lec.4

https://drive.google.com/file/d/1q2whBgZ82XqpZZFKqgR6UnGFpt41Sjwo/view?usp=sharing

lec.5

https://drive.google.com/file/d/1z1dmM9EreVdLMuwRvCiPsJGe1USTz4zx/view?usp=sharing

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