#include <stdio.h>

void swap(int *p,int *q)
{
	int t;
	t = *p;
	*p = *q;
	*q = t;
}

int main()
{
	int a,b,c,t;
	while(scanf("%d %d %d",&a,&b,&c) != EOF)
	{
		if(a > b)
			swap(&a,&b);
		if(a > c)
			swap(&a,&c);
		if(b > c)
			swap(&b,&c);
		printf("%d\n",a+b-c);
	}
	
	return 0;
}