Problem A: Vasya and Password: https://youtu.be/5ZdRBNJXHjg
Problem B: Relatively Prime Pairs: https://youtu.be/vcF8mTjgt6o
Problem C: Vasya and Multisets: https://youtu.be/q56uTA6t9Uk?t=3m8s
Problem D: Bicolorings: https://youtu.be/lSyQQ1T6iQ8
Educational Codeforces Round 51 (рейтинговый для Див. 2)
1051A - Вася и пароль
1051B - Взаимно простые пары
1051C - Вася и мультимножества
1051D - Двураскраски
That's a good thing you are doing! Sad that people are downvoting. What's really wrong with youtube tutorials on CF problems and sharing them? I don't understand Codeforces community.
I wonder what would happen if the color of the poster was violate/yellow/red. :/
violate/yellow/red coders won't do that, they discuss more complicated problems in their blogs or videos
lol, i'm not too concerned. not everyone is going to be happy with the content.
and i plan to get to red/grandmaster level over the next couple of years. Show people that it is possible.