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  1. #include <iostream>
  2. #include<bits/stdc++.h>
  3.  
  4. using namespace std;
  5. typedef long long int ll;
  6.  
  7.  
  8. void seive(int l , int r) {
  9.  
  10.         vector<int> arr(r+1,1);
  11.  
  12.         for(int i=2;i<=r;i++){
  13.             if(arr[i]==1){
  14.                 ll j= (ll)i*(ll)i;
  15.  
  16.                 while(j<=r){
  17.                     arr[j]=0;
  18.                     j=j+i;
  19.                 }
  20.             }
  21.         }
  22.         for (int i = l; i <= r; i++) {
  23.         if (arr[i] == 1) {
  24.             cout << i << " ";
  25.         }
  26.     }
  27.  
  28.  
  29.     }
  30.  
  31. int main() {
  32. 	int l,r;
  33. 	cin>>l>>r;
  34. 	seive(l,r);
  35.  
  36. 	return 0;
  37. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
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12 100
stdout
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13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
https://ideone.com/8kBl72
language:
C++14 (gcc 8.3)
created:
5 days ago
visibility:
public

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