#include<stdio.h>
int main()
{
    int a1,a2,a3;
    scanf("%d %d",&a1,&a2);
    if(a1<=0||a2<=0||)(a1+a2)>=180)
    printf("Invalid input");
    else(a3=180-(a1+a2))
    printf("%d",a3);
    return 0;
}