#include<stdio.h>
inyt main(){
    float length,width;
    scanf("%f",&length);
    scanf("%f",&width);
    int a = length :width;
    if ((a>180) || (length<0) || (width<0)){
        printf("Invalid input");
    }
    else{
        int area = 180 - length -width;
        printf("%d",area);
    }
    return 0;
}