#!/bin/bash -x

ANG=` expr $1 / 360 \* 3 `

# Make sure that the angle of change is a divisor of 360


if [ $ANG -lt 3 ]; then
    ANG=3
elif [ $ANG -gt 3 ] && [ $ANG -lt 6 ]; then
    ANG=6
elif [ $ANG -gt 6 ] && [ $ANG -lt 9 ]; then
    ANG=9
elif [ $ANG -gt 9 ] && [ $ANG -lt 12 ]; then
    ANG=12
elif [ $ANG -gt 12 ]; then
    ANG=15
fi

echo $ANG