/*
#include <stdio.h>
int main()
{
int n,a,b;
scanf("%d",&n);
a=n%10;
b=n/10;
n=(a*10+b)*2%100;
printf("%d\n",n);
if(n<=50)
{
printf("GOOD");
}
else
{
printf("OH MY GOD");
}
return 0;
}
*/
/*
#include <stdio.h>
int main()
{
double h,w,a,b;
scanf("%lf %lf",&h,&w);
if(h<150)
{
a=h-100;
}
else if(h<160)
{
a=(h-150)/2+50;
}
else
{
a=(h-100)*0.9;
}
b=(w-a)*100/a;
if(b<=10)
{
printf("정상");
}
else if(b<=20)
{
printf("과체중");
}
else
{
printf("비만");
}
return 0;
}
*/
#include <stdio.h>
int main()
{
int a,b,c;
scanf("%d %d %d",&a,&b,&c);
if(a%2==0)
{
printf("%d\n",a);
}
if(b%2==0)
{
printf("%d\n",b);
}
if(c%2==0)
{
printf("%d\n",c);
}
}