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  2. Algorithms
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  4. Diagonal Difference
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Diagonal Difference

  • sjmulder
     + 1 comment

    I did about the same, but using a single for loop and a single sum variable:

    #include <stdio.h>
#include <stdlib.h>

int main(void)
{
	int sz; scanf("%d", &sz);
	int sum = 0;
	for (int i = 0; i < sz*sz; i++) {
		int x; scanf("%d", &x);
		if (!(i % (sz+1))) sum += x;
		if (i > sz-2 && i < sz*sz-1 && !(i % (sz-1))) sum -= x;
	}
	printf("%d\n", abs(sum));
}