#include<stdio.h>
int main (){
    int angle1,angle2;
    int angle3;
    scanf("%d",&angle1);
    scanf("%d",&angle2);
    if((angle1<=0 && angle2<=0 || angle1+angle2>180)){
       printf("invaild input");
    }
    else (angle3 =180-(angle1=angle2));
      print
    
        
        
    }
}