#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<stddef.h>
#include<ctype.h>
#include<math.h>
#include<time.h>
int main()
{
	int s1, s2, s3;
	scanf("%d %d %d", &s1, &s2, &s3);
	int a[81] = { 0 };
	{
		for (int i = 1; i <= s1; i++)
			for (int j = 1; j <= s2; j++)
				for (int k = 1; k <= s3; k++)
					a[i + j + k]++;
	}
	int max = 0,result = 0;
	for (int i = 3; i <= 81; i++)
	{
		if (a[i] > max)
		{
			max = a[i];
			result = i;
		}
	}
	printf("%d", result);
	return 0;
# }