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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	// your code goes here
  5. 	int n;
  6. 	scanf("%d",&n);
  7. 	int odd=1;
  8. 	int even=2;
  9. 	int i=0;
  10. 	for(i=0;i<=n/2;i++){
  11. 		for(int j=0;j<n;j++){
  12. 			if(j<(n/2)-i || j>(n/2)+i){
  13. 				printf("%d ",even);
  14. 				even+=2;
  15. 			}
  16. 			else{
  17. 				printf("%d ",odd);
  18. 				odd+=2;
  19. 			}
  20. 		}
  21. 		printf("\n");
  22. 	}
  23. 	int p=n-1;
  24. 	for(;i<n;i++){
  25. 		for(int j=0;j<n;j++){
  26. 			if(j<(n-p) || j>(p-1)){
  27. 				printf("%d ",even);
  28. 				even+=2;
  29. 			}
  30. 			else{
  31. 				printf("%d ",odd);
  32. 				odd+=2;
  33. 			}
  34. 		}
  35. 		printf("\n");
  36. 		p--;
  37. 	}
  38.  
  39. 	return 0;
  40. }
  41.  
Success #stdin #stdout 0s 2172KB
comments (?)
stdin
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7
stdout
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2 4 6 1 8 10 12 
14 16 3 5 7 18 20 
22 9 11 13 15 17 24 
19 21 23 25 27 29 31 
26 33 35 37 39 41 28 
30 32 43 45 47 34 36 
38 40 42 49 44 46 48
https://ideone.com/H59i76
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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