#include <stdio.h>
int main(void){
int a,b,c,d,e,f,g,h,i,j,k,l,m;
int count;
int sum=55;
scanf("%d %d %d %d %d %d %d %d %d",&a,&b,&c,&d,&e,&f,&g,&h,&i);
printf("%d\n",sum-a-b-c-d-e-f-g-h-i);
}