#include<stdio.h>
#include<windows.h>
#pragma warning(disable:4996)
int main()
{
int x;
scanf("%d", &x);
int i = 0;
int Sn = 0;
int tmp = 0;
for (; i <5; i++){
tmp = tmp * 10 + x;
Sn += tmp;
}
printf("%d", Sn);
system("pause");
return 0;
}
