This is a hamburger in the shape of a hot dog.
It will run you about $5 USD and might be the cheapest food option within the city of Oslo; perhaps the entire country of Norway. Condiments are free of charge. Should you prefer your hamburgers round and on a bun, you're going to set yourself back around $15 smackers. More if you want the luxury of such fine dining establishments as McDonalds or Burger King.
In my backpack I have tallied three apples, a bag of trail mix, a quarter of a baguette, and a package of cookies.
Think I can make this last for the next week?