import sys
import math

# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.
d = 0
alldefib = []
lon = input()
lat = input()
n = int(input())
for i in range(n):
    defib = input().split(';')
    alldefib.append(defib)

for i in range(len(alldefib)):
    a = (math.sqrt(((((round(float((alldefib[i][4].replace(',','.'))), 6) * math.pi / 180) - (round(float((lon.replace(',','.'))),6) * math.pi / 180)) * math.cos(((round(float((lat.replace(',','.'))),6) * math.pi / 180) + (round(float((alldefib[i][5].replace(',','.'))),6) * math.pi / 180) / 2)))**2) + (((round(float((alldefib[i][5].replace(',','.'))),6) * math.pi / 180) - (round(float((lat.replace(',','.'))),6) * math.pi / 180))**2)) * 6371)
    if d == 0:
        d = a
        location = alldefib[i][1]
    elif a < d:
        d = a
        location = alldefib[i][1]

# Write an answer using print
# To debug: print("Debug messages...", file=sys.stderr, flush=True)

print(location)