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  1. #include <stdio.h>
  2. #define T 3400
  3. #define Z 31622
  4. #define M 100001"%d", &t);
  5. 	for(i = 0; i < t; i++)
  6. 	{
  7. 		scanf("%d %d", &m,&n);
  8. 		if(m==1)m==2;
  9. 		if(m<Z)
  10. 		{
  11. 			if(n>Z)
  12. 			{
  13. 				a=m;
  14. 				m=Z;
  15. 				A=0;
  16. 				B=T-1;
  17. 				while(a>primes[A] && a<primes[B] && B-A>1)
  18. 					if(a>primes[(A+B)/2])A=(A+B)/2;
  19. 					else B=(A+B)/2;
  20.  
  21. 					if(a<=primes[A])S=A;
  22. 					else S=B;
  23.  
  24. 					for(j=S;j<T;j++)
  25. 						printf("%d\n", primes[j]);
  26. 			}
  27. 			else
  28. 			{
  29. 				a=m;
  30. 				b=n;
  31. 				A=0;
  32. 				B=T-1;
  33.  
  34. 				while(a>primes[A] && a<primes[B] && B-A>1)
  35. 					if(a>primes[(A+B)/2])A=(A+B)/2;
  36. 					else B=(A+B)/2;
  37.  
  38. 					if(a<=primes[A])S=A;
  39. 					else S=B;
  40.  
  41. 					A=S;
  42. 					B=T-1;
  43.  
  44. 					while(b>primes[A] && b<primes[B] && B-A>1)
  45. 						if(b>primes[(A+B)/2])A=(A+B)/2;
  46. 						else B=(A+B)/2;
  47.  
  48. 						if(b>=primes[B])SS=B;
  49. 						else SS=A;
  50.  
  51. 						for(j=S;j<=SS;j++)
  52. 							printf("%d\n", primes[j]);
  53. 			}
  54. 		}
  55.  
  56. 		if(n>Z)
  57. 		{
  58. 			K = n-m+1;
  59. 			for( j = 0;j<K;j++)
  60. 				tab[j]=1;
  61.  
  62.  
  63. 			if(m%2==0)m+=1;
  64. 			for( j = m; j<=n; j+=2)
  65. 			{
  66. 				if(tab[j-m])
  67. 				{
  68. 					k=0;
  69. 					while(j%primes[k]!=0 && k < T)k++;
  70. 					if(k==T)printf("%d\n", j);
  71. 					else
  72. 					{
  73. 						h=j-m;
  74. 						while(h<K)
  75. 						{
  76. 							tab[h]=0;
  77. 							h+=primes[k];
  78. 						}
  79. 					}
  80. 				}
  81. 			}
  82. 		}
  83.  
  84.  
  85. 	}
  86.  
  87. 	return 0;
  88. }
Success #stdin #stdout 0.01s 2012KB
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https://ideone.com/t74aV
language:
C (gcc 8.3)
created:
14 years ago
visibility:
public

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