//a+b
#include <stdio.h>
//#include <conio.h>

int main(){
 char a,b;
 int r;
 FILE *f;
 FILE *f1;
 
 f=fopen("adunare.in", "r"); 
 fscanf(f,"%c", &a);
 fscanf(f,"%c", &b);
 fscanf(f,"%c", &b);
 fclose(f);
 
 r=a-'0'+b-'0';
 
 f1=fopen("adunare.out","w");
 if (!f1) return -1;
 fprintf(f1,"%i", r);
 fclose(f1);
 
// getch();
 return 1;   
}