#include <stdio.h>
#include <math.h>
int main()
{
int a,b,c;
scanf("%d %d %d",&a,&b,&c);
if(abs(a)>abs(b))
{
if(abs(b)>abs(c))
printf("%d",a);
else
{
if(abs(a)>abs(c))
{
printf("%d",a);
}
else
printf("%d",c);
}
}
else
{
if(abs(c)>abs(b))
printf("%d",c);
else
printf("%d",b);
}
return 0;
}
int abc_abs[3];
abc_abs[0] = abs(a);
abc_abs[1] = abs(b);
abc_abs[2] = abs(c);
int max_index = 0;
int max = -10000;
for (int i = 0; i < 3; i++) {
if (abc_abs[i] > max) {
max = abc_abs[i];
max_index = i;
}
}
switch(max_index) {
case 0:
printf("%d", a);
case 1:
printf("%d", b);
case 2:
printf("%d", c);
}