import sys sys.setrecursionlimit(10 ** 6) int1 = lambda x: int(x) - 1 p2D = lambda x: print(*x, sep="\n") def II(): return int(sys.stdin.buffer.readline()) def MI(): return map(int, sys.stdin.buffer.readline().split()) def LI(): return list(map(int, sys.stdin.buffer.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def SI(): return sys.stdin.buffer.readline()[:-1] def main(): def iskado(a,b,c): if (a,b)==(10,0) or (b,c)==(10,0):return False if a<10 and b==10:return False if a==10 and b!=c:return True if a==b or a==c or b==c:return False if ab>c:return False return True def less(m): s=str(m) sn=len(s) dp=[[[[0]*2 for _ in range(11)] for _ in range(11)] for _ in range(sn+1)] dp[0][10][10][0]=1 for i in range(1,sn):dp[i][10][10][1]=1 for i,c in enumerate(s): c=int(c) for j in range(11): if i==sn-1 and j==10:break for k in range(11): for f in range(2): pre = dp[i][j][k][f] if pre==0:continue if f==0 and iskado(j,k,c):dp[i+1][k][c][0]+=pre end=10 if f else c for nk in range(end): if iskado(j,k,nk): dp[i+1][k][nk][1]+=pre sm=sum(dp[sn][j][k][f] for j in range(10) for k in range(10) for f in range(2)) return sm