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