/*#include <stdio.h>
#include <stdlib.h>
int main()
{
printf("Hello world!\n");
return 0;
}
*/
#include<stdio.h>
int main()
{
int a,b,c,d,e,f,g,h,k,i,sum=0 ;
scanf("%d %d %d %d %d %d %d %d %d", &a,&b,&c,&d,&e,&f,&g,&h,&k);
for (i=100;i>=1;i--)
{
if (i== a || b || c || d || e || f || g || h || k)
{
sum=i;
return 0;
}
}
printf("%d \n",sum);
}