Using Ctrl+F in the .sql file, I found that Remizide had an ID of 13.  Therefore, we can write a short Python script to parse it:
```'''# MAKE NEW LINES
r = open('inventory.txt', 'r').read()w = open('inventory_newline.txt', 'w')
r = r.split('),')for line in r:    w.write(line)    w.write('),\n')w.close()'''
f = open('inventory_newline.txt', 'r')
a = [0] * 1501 # there exist 1500 citiesfor line in f:    line = line.split(',')    if int(line[1]) == 13:        a[int(line[2])] += int(line[4][:-1])
m = 0mi = 0for i in range(len(a)):    if a[i] > m:        m = a[i]        mi = iprint(m, mi)```
Note that the first half of the code that is commented out is just for the purpose of making a file that is easier to parse through.  This gives us an ID of 531, which corresponds to Miami in the .sql file!
	flag{Miami}