[Solution] Odd Pairs CodeChef Solution 2022

[Solution] Odd Pairs CodeChef Solution 2022 | Solution CodeChef

Problem

Given an integer $N$, determine the number of pairs $(A, B)$ such that:

• $1 \leq A, B \leq N$;
• $A + B$ is odd.

Input Format

• The first line of input will contain a single integer $T$, denoting the number of test cases.
• Each test case consists of a single integer $N$.

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Output Format

For each test case, output the number of required pairs.

Explanation:

Test case $1$: There are no pairs satisfying the given conditions.

Test case $2$: The pairs satisfying both conditions are: $(1, 2)$ and $(2, 1)$.

Test case $3$: The pairs satisfying both conditions are: $(1, 2), (2, 1), (2, 3),$ and $(3, 2)$.