CF840D Destiny
CF865D Buy Low Sell High
CF888G Xor-MST
CF891E Lust
CF895C Square Subsets
CF908D New Year and Arbitrary Arrangement
CF914G Sum the Fibonacci
CF915D Almost Acyclic Graph
CF932E Team Work
CF940F Machine Learning
CF949C Data Center Maintenance
CF959F Mahmoud and Ehab and yet another xor task
CF960G Bandit Blues
CF961G Partitions
CF963E Circles of Waiting
CF995F Cowmpany Cowmpensation
CF997C Sky Full of Stars
CF997E Good Subsegments
CRT模板
用于求解线性同余方程组。