Add beads.cpp. Connect two beads and then count.
Move beads.cpp fridays.cpp and ride.cpp to a folder 1.1
Rewrite an easier solution in the official analisis for beads.cpp
Merge branch 'master' of https://github.com/wyuan1704/usaco
1) ignore .DS_Store 2) Move gift1.cpp to 1.1
Add 1.2/palsquare.cpp. Pay attention to large base.
Add dualpal.cpp. Simple