Matcom Online Grader

ℹ️ We've recently migrated MOG to a new server with a different grader. As a result, some features—especially those related to submission evaluation—might not work correctly. If you encounter any issues, please report them by clicking the exclamation icon in the bottom right corner of the website.

II Copa UH - Práctica

Ended

Overview
Problems
Standing
Submissions
Submit
Clarifications
Virtual participation

Register

Are you sure you want to participate in this contest ? If you select a team then virtual participation for other team members will be disabled. So, pick one if and only if your teammates are ready to compete with you.

B - B en 3

Languages: C, C++, Java, Pascal, Haskell, Python, JavaScript, Tiger, C#

Time & Memory limits: (details)

Dada una lista de $B$ $(3 \leq B \leq 500)$ enteros usted debe imprimir la suma del producto de todos los tríos diferentes módulo $ 10^9+7 $.

Input

Línea 1 : $B$ enteros positivos separados por un espacio (todos menores o iguales que $500$).

Output

Línea 1 : Entero que representa el valor deseado.

Sample test(s)

Input

4 4 3 10 1

Output

202