public class NRTest {

	public static void main(String[] args) {
		decline(42,1,23,4,8,10);
		decline(100,7,615,998,801,3);
		decline(100,432,406,867,60,1000);
	}

	public static void decline( int p, int a, int b, int c, int d, int n ) {
		 System.out.println("===");
		double price =  p * (Math.sin(a * 1 + b) + Math.cos(c * 1 + d) + 2);
		 double highest_decline = 0, current_decline = 0;
		 double highest_price = price;
		 double lowest_price = price;
		 double last_price = price;


		for (int x = 1; x <= n; x++) {


			if(price < lowest_price) {
				current_decline = highest_price - price;
				if(current_decline > highest_decline) {
					highest_decline = current_decline;
				}
			}

			if(price > highest_price) {
				highest_price = price;
				lowest_price = price;
			}


			price =  p * (Math.sin(a * x + b) + Math.cos(c * x + d) + 2);
		}
		System.out.println(highest_decline);
		 System.out.println("===");
	}

}