# PROBLEM LINK:

Practice

Contest: Division 1

Contest: Division 2

Contest: Division 3

Contest: Division 4

* Author:* Amaan Parvez

*Takuki Kurokawa, Utkarsh Gupta*

**Testers:***Nishank Suresh*

**Editorialist:**# DIFFICULTY:

643

# PREREQUISITES:

None

# PROBLEM:

Alice rolls a die and gets A, while Bob gets B. Is their sum a prime?

# EXPLANATION:

The numbers rolled are between 1 and 6, so the sum can only be an integer between 2 and 12.

In this range, the prime numbers are 2, 3, 5, 7, 11. So, check if A+B is one of these prime numbers or not — the output is `Alice`

if it is, `Bob`

if it isn’t.

# TIME COMPLEXITY

\mathcal{O}(1) per test case.

# CODE:

## Editorialist's code (Python)

```
for _ in range(int(input())):
a, b = map(int, input().split())
print('Alice' if a+b in [2, 3, 5, 7, 11] else 'Bob')
```