Difference

#include<stdio.h>

int main()

{

    long long A,B,C,D,X;

    scanf("%lld%lld%lld%lld",&A,&B,&C,&D);

    X=(A*B)-(C*D);

    printf("Difference = %lld\n",X);

    return 0;

}

Output

2 3 4 5

Difference = -14