Painted Numbers

Every positive rational number has been painted with one of two colors, red or blue, so that:

• two numbers that differ by exactly $1$ are painted different colors,
• two numbers that are reciprocals of each other are painted the same color,
• the number $1$ is painted red.

Determine the color of a given number.

The first line contains a natural number $Z$ ($1 \le Z \le 20$), the number of test cases.

Each of the next $Z$ lines contains one positive rational number in the form a / b, where $a$ and $b$ are positive integers ($1 \le a, b \le 10^9$).

For each test case, print the color of the given number on its own line: czerwony for red, or niebieski for blue.

$4 / 2 = 2 = 1 + 1$, so its color must be the opposite of the color of $1$.

$1 / 3$ is the reciprocal of $3$, so they share a color, and $3 = 1 + 2$, so that color must be the opposite of the color of $2$.