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