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  1. #include<stdio.h>
  2.  
  3. #define wb(x) ((x)<0?-(x):(x))
  4.  
  5. int coord[20];
  6. long long min[1<<16], max[1<<16];
  7.  
  8. int main()
  9. {
  10. 	int n, d, i, j, k, m;
  11. 	long long x;
  12.  
  13. 	scanf("%d%d", &d, &n);
  14. 	m = 1<<(d-1);
  15. 	for(i = 0; i < m; ++i)
  16. 		min[i] = 1e15,
  17. 		max[i] = -1e15;
  18. 	while(n--)
  19. 	{
  20. 		for(j = 0; j < d; ++j)
  21. 			scanf("%d", &coord[j]);
  22. 		for(j = 0; j < m; ++j)
  23. 		{
  24. 			x = 0;
  25. 			for(k = 0; k < d; ++k)
  26. 				x += coord[k] * (j&(1<<k) ? 1 : -1);
  27. 			if(x < min[j])
  28. 				min[j] = x;
  29. 			if(x > max[j])
  30. 				max[j] = x;
  31. 		}
  32. 	}
  33. 	x = -1;
  34. 	for(i = 0; i < m; ++i)
  35. 		if(wb(max[i]-min[i]) > x)
  36. 			x = wb(max[i]-min[i]);
  37. 	printf("%lld\n", x);
  38. 	return 0;
  39. }
Success #stdin #stdout 0s 3320KB
comments (?)
stdin
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4 3
10 -3 -2 5
1 2 3 4
-1 2 0 4
stdout
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20
https://ideone.com/smc9dL
language:
C (gcc 8.3)
created:
10 years ago
visibility:
secret

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