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#include <iostream>
using namespace std;
int i,j,k,a[101];
int main(){
    for (int i = 0; i <=100; i++)a[i]=i;
    for (k=5; k>=2; --k){
        for ( i =1 ; i <=100; i++)if(i%k==0)a[i]=0;
        for ( i =1; i <=99; i++)
            for (j = 1; j <= 100-i; j++)
                if(a[j]>a[j+1])
                {
                    a[j]=a[j]+a[j+1];
                    a[j+1]=a[j]-a[j+1];
                    a[j]=a[j]-a[j+1];
                } 
    }
    j=1; 
    while (a[j]==0 && j<100)j=j+1;
    for ( i = j; i <=100; i++)a[0]=a[0]+a[i];    
        cout<<a[0];    
}