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  1. #include<bits/stdc++.h>
  2.  
  3. using namespace std;
  4. int ans[2000005];
  5. bool status[20000005];
  6. bool vis[20000005];
  7.  
  8. int main(){
  9.     int t;
  10.     scanf("%d",&t);
  11.     while(t--){
  12.             memset(status,0,sizeof status);
  13.             memset(vis,0,sizeof vis);
  14.         long long l,r;
  15.         scanf("%lld %lld",&l,&r);
  16.         //cout<<l<<endl;
  17.  
  18.        int pm=0;
  19.         //long long p=ceil((int)sqrt(r));
  20.         for(long long i=2;i*i<=r;i++){
  21.             if(!status[i]){
  22.                 ans[pm]=i;
  23.                 pm++;
  24.                 for(long long k=2*i;k<=10000000;k+=i)
  25.                     status[k]=1;
  26.             }
  27.         }
  28.  
  29.         for(int k=0;k<pm;k++){
  30.             long long st=ceil(l/ans[k]);
  31.             if(st==0) st+=2;
  32.             if(st==1) st++;
  33.             for(long long j=st*ans[k];j<=r;j+=ans[k])
  34.                 {
  35.                     vis[j-l]=1;
  36.                 }
  37.         }
  38.  
  39.        for(long long i=l;i<=r;i++){
  40.             if(!vis[i-l])
  41.                 printf("%lld\n",i);
  42.         }
  43.  
  44.     }
  45.   return 0;
  46. }
  47.  
Runtime error #stdin #stdout 0.07s 62936KB
comments (?)
stdin
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3
999900000 1000000000
1 32000
150571 150600
stdout
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Standard output is empty
https://ideone.com/SaTUy5
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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