#!/bin/bash
#echo hi
x=0
y=0
m=5000
read x
read y
if [ "$x" -lt "$y" ]; then #aaaaaa
tmp=$x
x=$y
y=$tmp
fi
while [[ "$m" -ne 0 ]]
do
read m
if [[ "$m" -ge "$x" ]]; then
tmp=$x
y=$tmp
x=$m
elif [[ "$m" -gt "$y" ]]; then
y=$m
fi
done
echo "$y"