#include<stdio.h>
int main()
 {
     int angle1;
     int angle2;
     
     scanf("%d",&angle1);
     scanf("%d",&angle2);
     
    
     if ((angle1 <=0 || angle2 <=0||(angle1+angle2)>=180)
     {
         printf("Invalid Input");
     }
     else
     {
         int third = 180 - (angle1 + angle2);
         printf("%d",third);
     }
     return 0;
     }