#include<stdio.h>
int 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;         }
}