#include<stdio.h>
int main()
{
int years;
scanf("%d",&years);
if(years<1)
{
    printf("Invalid input");
}
else if(years>=1 && years<=5)
{
    printf("%d ",%5 years);
}
else if(years>=6 && years<=10)
{
    printf("%d ",years);
}
else
{
    printf("%d",years);
}
return 0;
}