def main():
    print("do not " + input().strip())
main()

def solve(Q, X, Y, N):
    MOD = 10**9 + 7
    ans = 0
    for i in range(Q):
        x = X[i]
        y = Y[i]
        n = N[i]
        curr = 0
        for j in range(n):
            curr ^= (x + j) * y
        ans = (ans + curr) % MOD
    return ans

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