摘要：E. Turn Off The TV time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Luba needs your help 阅读全文

摘要：前缀和＋差分 一段区间内的t数组和=0 <=> b为这一段区间的中位数 1 #include <iostream> 2 #include <algorithm> 3 #include <cstdio> 4 #include <cstring> 5 #include <cstdlib> 6 using 阅读全文