import java.util.*;
class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i=1 ; i<=n ; i++){
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
}
System.out.println(sum);
  }
} import java.util.*; util.* java class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i=1 ; i<=n ; i++){
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
}
System.out.println(sum);
  }
} Main public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i=1 ; i<=n ; i++){
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
}
System.out.println(sum);
  } main {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i=1 ; i<=n ; i++){
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
}
System.out.println(sum);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc long sum = 0; sum 0 for(int i=1 ; i<=n ; i++){
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
} int i=1 ; int i=1 ; i 1 i<=n i n i++ i++ i {
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
} {
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
} if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    } (i%3!=0)&&(i%5!=0) (i%3!=0) i%3 i 3 0 (i%5!=0) i%5 i 5 0 {
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    } if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      } i%3!=0 i%3 i 3 0 {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      } if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	} i%5!=0 i%5 i 5 0 {
      		
      	sum+=i;
      	
      	
      	} sum+=i sum i System.out.println(sum) System.out.println System.out System System.out sum String[] args args
import java.util.*;
class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    long sum = 0;
    
    for(int i=1 ; i<=n ; i++){
      
      if( (i%3!=0)&&(i%5!=0)){
      if(i%3!=0) {
      	if(i%5!=0){
      		
      	sum+=i;
      	
      	
      	}
      }
    }
}
System.out.println(sum);
  }
}