#include<stdio.h>
int main(){
    int n1;
    int n2,n3;
    scanf("%f",&n1);
    scanf("%d",&n2);
    
    if(n1<=0 || n2<=0 || (n1+n2)>=180){
        printf("Invalid input");
    }else{
        n3=180-(n1+n2);
        printf("%f\n",n3);
    }
    
    return 0;
}