public class Aquarium {

	public static void main (String []args) {
		int min = 1;
		int max = 1000;
		int size[] = {10,100,500};
		System.out.println(peaceful(min, max, size));
	}
	public static int peaceful (int minSize, int maxSize, int[]fishSizes) {
		int num=0;
		int []check = new int [maxSize - minSize + 1];
		for (int i=0; i<check.length; i++) {
			check[i]=0;
		}
		for (int i=minSize; i<=maxSize; i++) {
			for (int x=0;x<fishSizes.length; x++) {
				if (i>10*fishSizes[x]|| fishSizes[x]>10*i || (i<2*fishSizes[x] && fishSizes[x]<2*i)) {
					check[i-minSize]=1;
					//System.out.println(i);
				}
			}

		}
		for (int i=0;i<check.length; i++) {
			if (check[i]==1) {
				num++;
			}
		}
		return num;

	}
}