Problem

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Cálculo factorial

Problem

Escriba un programa con una función recursiva para calcular el factorial.

Entrada
La primera línea contiene un número natural N (  N<=12 ).

Impresión
Imprime el factorial del número.
Ejemplos

time 1000 ms
memory 256 Mb
Rules for program design and list of errors in automatic problem checking

Teacher commentary

Your Program

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# Entrada Salida
1 1 1
2 2 2