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  1. #include <bits/stdc++.h>
  2. #include <sys/time.h>
  3. using namespace std;
  4. #define ff first
  5. #define ss second
  6. #define pb push_back
  7. #define mp make_pair
  8.  
  9. typedef long long ll;
  10. typedef long double ld;
  11.  
  12. const int INF=int(1e9);
  13. const ll INF64=(ll)(1e18);
  14. const ld EPS=1e-9;
  15. const ld PI=3.1415926535897932384626433832795;
  16.  
  17. int ans[1000000]={0};
  18.  
  19. int main(){
  20.  
  21.     int m;
  22.  
  23.     cin>>m;
  24.  
  25.     int check=0;
  26.  
  27.     for(int i=1;i<=500000;++i){
  28.  
  29.          int count=0,j=5;
  30.  
  31.          int n=i;
  32.  
  33.          while(n>0){
  34.  
  35.              count+=n/5;
  36.              n/=5;
  37.  
  38.          }
  39.  
  40.       //   printf("%d\n",count);
  41.  
  42.          if(count==m)
  43.          	 ans[check++]=i;
  44.  
  45.     }
  46.  
  47.     printf("%d\n",check);
  48.  
  49.     if(check){
  50.  
  51.       for(int i=0;i<check;++i)
  52.     	printf("%d ",ans[i]);
  53.  
  54.  
  55.       printf("\n");
  56.  
  57.  
  58.     }
  59. 	return 0;
  60.  
  61. }
Success #stdin #stdout 0.02s 7368KB
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https://ideone.com/ma0HBi
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
secret

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