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for (int c0 = 1; c0 <= min(5, -t1 + 64 * b + 9); c0 += 1) if (c0 <= 3 || b == 1) for (int c1 = t1 - 64 * b + 64; c1 <= min(70, -c0 + 73); c1 += 64) if (c0 <= 3 || c1 == t1) A(c0, 64 * b + c1 - 8);