1940. 가랏! RC카!

https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AV5PjMgaALgDFAUq 

SW Expert Academy

 

문제 해석

RC카의 속도를 증가, 감소, 유지 시키며 N초동안 이동한 거리를 계산하면 됩니다.

 

코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Solution_1940_가라RC카 {

	static final int INCREASE = 1;
	static final int DECREASE = 2;

	public static void main(String[] args) throws NumberFormatException, IOException {

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int T = Integer.parseInt(br.readLine());

		StringBuilder sb = new StringBuilder();
		for (int tc = 1; tc <= T; tc++) {

			int N = Integer.parseInt(br.readLine());

			int distance = 0, currentSpeed = 0;
			;
			for (int i = 0; i < N; i++) {

				String str = br.readLine();
				if (str.length() == 1) {// 현재 속도 유지
					distance += currentSpeed;
					continue;
				}

				// command가 0이 아닌 경우
				StringTokenizer st = new StringTokenizer(str, " ");
				int command = Integer.parseInt(st.nextToken());
				int speed = Integer.parseInt(st.nextToken());

				switch (command) {
				case INCREASE:// 가속
					currentSpeed += speed;
					break;
				case DECREASE:// 감속
					currentSpeed -= speed;
					currentSpeed = currentSpeed < 0 ? 0 : currentSpeed;
					break;
				}
				//속도조절 후 거리계산
				distance += currentSpeed;

			}

			sb.append("#" + tc + " " + distance + "\n");
		}
		System.out.println(sb);
	}

}