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