from math import sqrt, log EPS = 0.5 F1 = 0 F2 = 0 F_inf = 1 / sqrt(19) def f(n): return (sqrt(F1) / F2 - F_inf) / (1 - F_inf) * 1200 def g(x): return pow(2, x / 800.0) def g_inv(x): return 800.0 * log(x) / log(2) gsum = 0 N = input() for i in xrange(1, N+1): RPerf = int(raw_input()) F1 += pow(0.81, i) F2 += pow(0.9, i) gsum += g(RPerf) * pow(0.9, i) rating = g_inv(gsum / F2) - f(i) if int(rating + EPS) > int(rating): print int(rating) + 1 else: print int(rating)