| codeforces #14 |
| 1 | from sys import stdout n = int(input()) d = 2**29 print(0, 1) stdout.flush() black = input() == "black" x = d for i in range(n-1): print(x//2, 1) stdout.flush() d//= 2 if black ^ (input() == "black"): x-= d else: x+= d print(x//2+1, 2, x//2, 0) |
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