#include <stdio.h>

int
main()
{
    int a1, a2, sum;
    printf("Enter a1, a2: ");

    scanf("%d, %d", &a1, &a2);

    sum = a1 + a2;
    printf("The sum is %d\n", sum);
    printf("I can lie: %d - %d = %d\n",
	   a1, a2, sum);

    return 0;
}