/*
#include <stdio.h>
int main()
{
int h,o,j,e;
scanf("%d %d %d",&h,&o,&j);
e=h-o+j;
if(e%10==0)
{
printf("대박");
}
else
{
printf("그럭저럭");
}
return 0;
}
#include<stdio.h>
int main()
{
double h,o,j,e;
//j=표준몸무게 e=비만도
scanf("%lf %lf",&h,&o);
if(h<150)
{
j=h-100;
}
else if(h<160)
{
j=(h-150)/2+50;
}
else
{
j=(h-100)*0.9;
}
e=(o-j)*100/j;
if(e<=10)
{
printf("정상");
}
else if(e<=20)
{
printf("과체중");
}
else
{
printf("비만");
}
return 0;
}
*/
#include<stdio.h>
int main()
{
int h,o,j;
scanf("%d %d %d",&h,&o,&j);
if(h%2==0)
{
printf("%d\n",h);
}
if(o%2==0)
{
printf("%d\n",o);
}
if(j%2==0)
{
printf("%d\n",j);
}
return 0;
}