n = int(input())
strpoints = []
for i in range (0, n):
    strpoints.append(input())
wall_points = []
for i in range(len(strpoints)):
    wall_points.append(strpoints[i].split(" "))
ppoints = []
for i in wall_points:
    ppoints.append(i[2])
    ppoints.append(i[3])
points = [[0,0] for i in range(n)]
for i in range(0, n):
    for j in range(0, 2):
        points[i][j] = int(ppoints[j + i*2])
start_pos = []
start_pos.append(int(wall_points[0][0]))
start_pos.append(int(wall_points[0][1]))
points.append(start_pos)
print(1)