#include<stdio.h>
int main()
{
    int angle1, angle2, angle3;
    scanf("%d%d", &angle1, &angle2);
    if (angle1 <= 0 || angle2 <= 0 || angle1 >= 180 || angle2 >= 180 || (angle1 + angle2) >= 180) {
        printf("Invalid Input\n");
    } else {
        angles3 =180 - (angle1 + angle2);
        printf("%d\n", angle3);
    }
    
}