# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
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1083761 | 2024-09-04T05:21:43 Z | bvd | Stove (JOI18_stove) | Java 11 | 0 ms | 0 KB |
import java.util.Arrays; import java.util.Collections; import java.util.StringTokenizer; import java.io.BufferedReader; import java.io.BufferedOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintWriter; import java.io.OutputStream; public class Main { private static class Kattio extends PrintWriter { public Kattio(InputStream i) { super(new BufferedOutputStream(System.out)); r = new BufferedReader(new InputStreamReader(i)); } public Kattio(InputStream i, OutputStream o) { super(new BufferedOutputStream(o)); r = new BufferedReader(new InputStreamReader(i)); } public boolean hasMoreTokens() { return peekToken() != null; } public int getInt() { return Integer.parseInt(nextToken()); } public double getDouble() { return Double.parseDouble(nextToken()); } public long getLong() { return Long.parseLong(nextToken()); } public String getWord() { return nextToken(); } private BufferedReader r; private String line; private StringTokenizer st; private String token; private String peekToken() { if (token == null) try { while (st == null || !st.hasMoreTokens()) { line = r.readLine(); if (line == null) return null; st = new StringTokenizer(line); } token = st.nextToken(); } catch (IOException e) { } return token; } private String nextToken() { String ans = peekToken(); token = null; return ans; } } public static void main(String[] args) { try(Kattio io = new Kattio(System.in, System.out)) { int n = io.getInt(); int k = io.getInt(); if (k == n) { io.println(n); } Integer[] gaps = new Integer[n-1]; int prevInt = -1; int firstInt = -1; for (int i=0; i<n; ++i) { int curInt = io.getInt(); if (i>0) { gaps[i-1] = curInt - prevInt - 1; } else { firstInt = curInt; } prevInt = curInt; } Arrays.sort(gaps, Collections.reverseOrder()); int result = prevInt + 1 - firstInt; for (int i=0; i<k-1; ++i) { result -= gaps[i]; } io.println(result); } } }