Odd Pairs CodeChef Solution

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Odd Pairs CodeChef Solution

Odd Pairs CodeChef Solution

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Problem

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

• $1\le A,B\le N$;
• $A+B$ 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 $N$.

Output Format

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

Constraints

• $1\le T\le 100$
• 1 \leq N \leq 10^91≤N≤109

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Sample 1:

5
1
2
3
100
199

0
2
4
5000
19800

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 $(3,2)$.

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SOLUTION

 Odd Pairs CodeChef Solution

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