import sys
import math

# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.

_id = []
_lon = {}
_lat = {}
_adress = {}

def d(a,b):
    x = (_lon[b]-_lon[a])*math.cos((_lat[a]+_lat[b])/2)
    y = _lat[b]-_lat[a]
    return math.sqrt(math.pow(x,2)+math.pow(y,2))*6371

lon = input()
lat = input()
n = int(input())

_lon[0] = math.radians(float(lon.replace(",",".")))
_lat[0] = math.radians(float(lat.replace(",",".")))

for i in range(n):
    defib = input()
    #print(defib.split(";"), file=sys.stderr)
    _d = defib.split(";")
    id = int(_d[0])
    _id.append(id)
    _adress[id] = _d[1]
    _lon[id] = math.radians(float(_d[4].replace(",",".")))
    _lat[id] = math.radians(float(_d[5].replace(",",".")))


mem = 1
for id in _id:
    if(d(0, id) < d(0, mem)):
        mem = id
# Write an action using print
# To debug: print("Debug messages...", file=sys.stderr)

print(_adress[mem])