#include<stdio.h>
int main()
{
    int a,b,c;
    if(scanf("%d %d", &a, &b) != 2)
    return 0;
    if(a <=0 || b<=0 || a>= 180 || b>= 180 || (a+b)>=180)
    {
    printf("Invalid output");
    {
    else
    {
        c = 180-(a+b);
        printf("%d", c);
    }
    return 0;
}