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May 24th, 2018
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  1. #include <iostream>
  2. #include <stdio.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. long long m, n;
  7. long long i,j;
  8. scanf("%lld %lld", &m, &n);
  9.  
  10. for (i = m; i <= n; i++) {
  11. if (i < 100) {
  12. for (j = 2; j <= i; j++) {
  13. if (i%j == 0 && i == j) {
  14. printf("%lld\n", i);
  15. }
  16. else if (i%j == 0) {
  17. break;
  18. }
  19. }
  20. }
  21. else {
  22. if (i % 2 == 0) {
  23. continue;
  24. }
  25. for (j = 3; j*j <= i; j+=2) {
  26. if (i%j == 0) {
  27. break;
  28. }
  29. else if (i < (j+2)*(j+2) || i==j*j) {
  30. printf("%lld\n", i);
  31. }
  32.  
  33. }
  34. }
  35.  
  36. }
  37.  
  38. return 0;
  39. }
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