摘要：
E. Sonya and Problem Wihtout a Legend time limit per test 5 seconds memory limit per test 256 megabytes input standard input output standard output E. 阅读全文
摘要：
We have a large square grid with H rows and W columns. Iroha is now standing in the top-left cell. She will repeat going right or down to the adjacent 阅读全文
摘要：
CIRU - The area of the union of circles no tags no tags You are given N circles and expected to calculate the area of the union of the circles ! Input 阅读全文