#include <iostream>
using namespace std; //Humaira Gathi Pranantya X4

int main() {
	int kontrakan = 200;
	int bulan = 1;
	
	while (bulan <= 8){
		kontrakan += 20;
		cout << "Bulan ke-" << bulan << ":" << kontrakan << "meter persegi" << endl;
		bulan++;
	}
	
	return 0;
}