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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int N;
  5. 	scanf("%d\n", &N);
  6.     int i;
  7.     int c=1;
  8.     int r=0;
  9.     int p=0;
  10.     for(i=1; i<=N; i++){
  11. 	if(i%2!=0){
  12. 		c=c+1;
  13. 		//printf("%d\n", c);
  14. 		r=(c-1);
  15. 		//printf("%d\n", r);
  16. 		p=c*r;
  17. 		//printf("%d\n", p);
  18. 	}
  19. 	else{
  20. 		c=(i/2)+1;
  21. 		//printf("%d\n", c);
  22. 		r=(i/2)+1;
  23. 		//printf("%d\n", r);
  24. 		p=c*r;
  25. 		//printf("%d", p);
  26. 	}
  27.     }
  28. 	printf("%d", p);
  29. 	return 0;
  30. }
  31.  
Success #stdin #stdout 0s 4540KB
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https://ideone.com/ONMV9N
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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