学生志愿分配的代码，为什么只能分配到第一志愿，其他志愿分配不到？

import openpyxl
import statistics as stats
book = openpyxl.load_workbook('志愿.xlsx')
zy = book["小学"]
jh = book["计划信息"]

hangshu = 1
break_1= 0


for hang1 in range(2,730):
    for lie in range(3,8):
        x = zy.cell(hang1,lie).value

        for hang2 in range(2,7):

            y = jh.cell(hang2,2).value
            jhs = jh.cell(hang2,4).value #计划数
            sjs = jh.cell(hang2,6).value #实际数

            if y == x:
                if int(jhs) > int(sjs):
                    jh.cell(hang2,6).value = sjs+1
                    zy.cell(hang1,9).value = x
                    break_1= 1
                    print(lie,x,y)
               
        if break_1 == 1:
            break

    print(hang1)
book.save('志愿.xlsx')