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BOJ 2851. [Bronze1] 슈퍼 마리오 #166

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hojongs opened this issue Jun 14, 2023 · 0 comments
Open

BOJ 2851. [Bronze1] 슈퍼 마리오 #166

hojongs opened this issue Jun 14, 2023 · 0 comments

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@hojongs
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hojongs commented Jun 14, 2023

Problem link

https://www.acmicpc.net/problem/2851

Problem abstraction

문제의 핵심을 요약한다. 체계적인 문제 접근을 위해, 문제를 추상화한다

적합한 자료구조를 생각한다

Design(Plan) algorithm

# 1

---
# 2

---
# 3

Algorithm idea

추상화한 문제 이해를 기반으로 알고리즘의 대략적인 구현 계획을 서술한다

Pseudo-code

idea를 수도 코드로 작성해본다

curr = 0
loop i in 0...10-1:
    if abs(100 - curr) > abs(100 - curr - nums[i]) or equal and next one is bigger
        curr += nums[i]
    else break
print curr

Validate algorithm

알고리즘의 유효 여부를 구현 전에 검증한다

예제 입력을 수도 코드로 계산해보고, 놓친 알고리즘 오류가 있는지 확인한다

Impl

import sys

readl = sys.stdin.readline

nums = [int(readl()) for _ in range(10)]

def f():
    curr = 0
    for i in range(10):
        nextt = curr + nums[i]
        curr_diff = abs(100 - curr)
        next_diff = abs(100 - nextt)
        if curr_diff > next_diff or (curr_diff == next_diff and nextt > curr):
            curr = nextt
        else:
            break
    print(curr)

f()

Self-feedback

구조적 접근: 문제를 추상화하여 구조적으로 접근했는가?

브론즈 단순 요구사항 구현 문제

사고력: 알고리즘을 완전히 이해했는가? (충분한 사고력을 가졌는가?)

구현력: 알고리즘을 신속, 정확하게 구현했는가?

next one is bigger ->

curr + nums[i] > curr
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