proc getchar_unlocked():char {. importc:"getchar_unlocked",header: "" .} proc putchar_unlocked(c:char){.header: "" .} proc printInt(a:int,skipLeavingZeros:bool = false) = # https://stackoverflow.com/questions/18006748/using-putchar-unlocked-for-fast-output if a == 0: putchar_unlocked('0') return var n = a var rev = a var cnt = 0 while rev mod 10 == 0: cnt += 1 rev = rev div 10 rev = 0 while n != 0: rev = (rev shl 3) + (rev shl 1) + n mod 10 n = n div 10 while rev != 0: putchar_unlocked((rev mod 10 + '0'.ord).chr) rev = rev div 10 if not skipLeavingZeros: while cnt != 0: putchar_unlocked('0') cnt -= 1 proc printFloat(a,b:int) = if a == 0: putchar_unlocked('0') else: printInt(a div b) if a mod b != 0: putchar_unlocked('.') # const leaving = 100000 # let r = (a * leaving div b) mod leaving # var l = leaving div 10 # while l > r : # putchar_unlocked('0') # l = l div 10 # printInt(r,true) const leaving = 100000 var r = (a * leaving div b) mod leaving r = if r mod 10 >= 5 : r div 10 + 1 else: r div 10 var l = leaving div 100 while l > r : putchar_unlocked('0') l = l div 10 printInt(r,true) putchar_unlocked('\n') var S : array[100002,char] var left = 0 var l = 0 while true: l += 1 let c = getchar_unlocked() S[l] = c if c == 'o' : left += 1 elif c != 'x': break left *= 100 for i in 1..