# 단계 설명 >입력, 출력과 사칙연산을 연습해 봅시다. Hello World! # 문제 / 코드보기 - [x] [Hello World](https://www.acmicpc.net/problem/2557) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/2557.py) - [x] [A+B](https://www.acmicpc.net/problem/1000) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/1000.py) - [x] [A-B](https://www.acmicpc.net/problem/1001) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/1001.py) - [x] [A×B](https://www.acmicpc.net/problem/10998) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/10998.py) - [x] [A/B](https://www.acmicpc.net/problem/1008) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/1008.py) - [x] [사칙연산](https://www.acmicpc.net/problem/10869) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/10869.py) - [x] [??!](https://www.acmicpc.net/problem/10926) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/10926.py) - [x] [1998년생인 내가 태국에서는 2541년생?!](https://www.acmicpc.net/problem/18108) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/18108.py) - [x] [나머지](https://www.acmicpc.net/problem/10430) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/10430.py) - [x] [곱셈](https://www.acmicpc.net/problem/2588) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/2588.py) - [x] [꼬마 정민](https://www.acmicpc.net/problem/11382) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/11382.py) - [x] [고양이](https://www.acmicpc.net/problem/10171) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/10171.py) - [x] [개](https://www.acmicpc.net/problem/10172) / [코드보기](/letsjo/python_algorithm_baekjoon/blob/main/10172.py) # 새로 알게된 점 - 파이썬의 `input` 값의 타입은 `str` 이다.
단계 설명
문제 / 코드보기
새로 알게된 점
input값의 타입은str이다.