I need help with code 1409:

#include <stdio.h>
int main()
{
    int a,b,c,d;
    scanf("%d%d",&a,&b);
    printf("%d\n",c=10-a,d=10-b, c+d<10);
    scanf("%d%d",&c,&d);
    getchar(), getchar();
    return 0;
}