from IPython.core import debugger
debugger = debugger.Pdb().set_trace
_stdin="""2 0
0 0 100 10
0 0 200 15"""

def _input():
    for i in _stdin.split('\n'):
      yield i

g=_input()
def input():
    return next(g)

n, index = [int(i) for i in input().split()]
for i in range(n):
    x, y, z, r = [int(j) for j in input().split()]

print(input())