#include<stdio.h>
int main()
{
    int a,b,c;
    printf("Enter the angle a:\n");
    scanf("%d",&a);
    printf("Enter the angle b:\n");
    scanf("%d",&b);
    if(a<0||b<0)
    {
        printf("Invalid input");
    }
    else
    {
        printf("Angle of c is :",180-a+b);
    }
    return 0;
}