import times, strutils, sequtils, math, algorithm, tables, sets, lists, intsets import critbits, future, strformat, deques template `max=`(x,y) = x = max(x,y) template `min=`(x,y) = x = min(x,y) template `mod=`(x,y) = x = x mod y template scan2 = (scan(), scan()) template scan3 = (scan(), scan()) let read* = iterator: string {.closure.} = while true: (for s in stdin.readLine.split: yield s) proc scan(): int = read().parseInt proc scanf(): float = read().parseFloat proc toInt(c:char): int = return int(c) - int('0') proc getLIS(arr:seq[int]):seq[int]= var n = arr.len result = newseqwith(n+2,int.high.div(2)) result[0]=arr[0] proc binSearch(v:int,res:var seq[int]):int= var left = 0 right = n+1 if res[left]>v: return left else: while left+1=v: return left else: while left+1