diff --git a/vending.py b/vending.py
new file mode 100644
index 0000000..93edc12
--- /dev/null
+++ b/vending.py
@@ -0,0 +1,135 @@
+def select_temperature():
+    print("[어서와요! GDSC 음료 자판기]")
+    input("사용자 입력 > ")
+    print("------------------------------")
+    print("음료를 선택 해주세요!\n")
+    print("[1] 차가운 음료\n[2] 따뜻한 음료\n")
+    temperature = (input("사용자 입력 > "))
+    print("\n------------------------------")
+    return temperature
+
+def cold(juice_list, price_list, cold_idx):
+    print("[차가운 음료]\n")
+    for i in range(cold_idx):
+        price = str(price_list[i])
+        price =  price[:-3] + "," + price[i][-3:]
+        print(f"[{i + 1}] {juice_list[i]} : {price}원")
+    juice = int(input("사용자 입력 > "))
+    if (juice < 1 or juice > cold_idx):
+        error_handle()
+    print("\n------------------------------")
+    return juice_list[juice - 1], price_list[juice - 1]
+
+def hot(juice_list, price_list, cold_idx):
+    print("[차가운 음료]\n")
+    for i in range(len(juice_list) - cold_idx):
+        price = str(price_list[i + cold_idx])
+        price =  price[:-3] + "," + price[-3:]
+        print(f"[{i + 1}] {juice_list[i + cold_idx]} : {price}원")
+    juice = int(input("\n사용자 입력 > "))
+    print("\n------------------------------")
+    return juice_list[juice + cold_idx - 1], price_list[juice + cold_idx - 1]
+
+def handle_juice(temperature, juice_list, cold_idx):
+    if (temperature == "1"):
+        juice, price = cold(juice_list, price_list, cold_idx)
+        return juice, price
+    elif (temperature == "2"):
+        juice, price = hot(juice_list, price_list, cold_idx)
+        return juice, price
+    error_handle()
+
+def select_pay():
+    print("[결제 방식 선택]\n")
+    print("[1] 현금")
+    print("[2] 카드 (부가세 10% 적용)\n")
+    payment = int(input("사용자 입력 > "))
+    print("\n------------------------------")
+    return payment
+
+def cash_input(sum):
+    print(f"[현금 투입 : {sum}원]\n")
+    print("[1] 5만원권")
+    print("[2] 1만원권")
+    print("[3] 5천원권")
+    print("[4] 1천원권")
+    print("[5] 500원")
+    print("[6] 100원")
+    print("[0] 반환\n")
+    num = int(input("사용자 입력 > "))
+    print("\n------------------------------")
+    return num
+
+def cash_calculate(sum, price, cash_list):
+    while (sum < price):
+        num = cash_input(sum)
+        
+        if (num == 0):
+            sum = 0
+        elif (num >= 1 and num <= 6):
+            sum += cash_list[num - 1]
+        elif (num < 0 or num > 6):
+            error_handle()
+    return sum
+
+def change_calculate(change, cash_list):
+    ret = []
+    for cash in cash_list:
+        ret.append(change // cash)
+        change %= cash
+    return ret
+
+def change_print(cash_list, ret):
+    print("[잔돈]\n")
+    for i in range(len(cash_list)):
+        if (ret[i] != 0):
+            print(f"{cash_list[i]}원 동전 : {ret[i]}개\n")
+
+def error_handle():
+    print("잘못 입력하셨으므로 자판기가 종료됩니다.")
+    exit
+
+def cashpay_output(juice, sum, cash_list, ret):
+    print("\n------------------------------")
+    print("이용해주셔서 감사합니다.\n")
+    print(f"[주문 음료]\n{juice}\n")
+
+    pay = str(sum)
+    pay =  pay[:-3] + "," + pay[-3:]
+    print(f"[투입 금액]\n{pay}원\n")
+    change_print(cash_list, ret)
+
+def cardpay_output(juice, price):
+    print("\n------------------------------")
+    print("이용해주셔서 감사합니다.\n")
+    print(f"[주문 음료]\n{juice}\n")
+    
+    pay = str(int(price * 1.1))
+    pay =  pay[:-3] + "," + pay[-3:]
+    print(f"[결제 금액]\n{pay}원")
+
+def handle_payment(payment, juice, price, sum, cash_list, ret):
+    if (payment == 1):
+        sum = cash_calculate(0, price, cash_list)
+        print(price)
+        ret = change_calculate(sum - price, cash_list)
+        cashpay_output(juice, sum, cash_list, ret)
+        return
+    elif (payment == 2):
+        cardpay_output(juice, price)
+        return
+    error_handle()
+
+def main():
+    price_list = [1500, 1300, 1000, 1100, 1800, 1500, 1700, 2100]
+    juice_list = ["스프라이트", "코카콜라", "솔의눈", "펩시 콜라", "TOP커피", "꿀물", "홍삼차", "단팥죽"]
+    cash_list = [50000, 10000, 5000, 1000, 500, 100]
+
+    temperature = select_temperature()
+    cold_idx = 4
+
+    juice, price = handle_juice(temperature, juice_list, cold_idx)
+    payment = select_pay()
+    handle_payment(payment, juice, price, sum, cash_list, ret)
+
+main()