Submission #1606551

---

Source Code Expand

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
class Simple {
    int N;
    int[] a;
    const int INF = 1234567890;
    void Solve() {
        //input
        N = io.Int;
        a = new int[N];
        for (int i = 0; i < N; ++i)
            a[i] = io.Int;
        //cal
        int[] dp = new int[N];
        for(int i = 0; i < N; ++i) 
            dp[i] = INF;
        dp[0] = 0;
        for(int i=0;i<N-1;++i) {
            dp[i + 1] = Math.Min(dp[i + 1], dp[i] + Math.Abs(a[i + 1] - a[i]));
            if(i<N-2)
                dp[i + 2] = Math.Min(dp[i + 2], dp[i] + Math.Abs(a[i + 2] - a[i]));
        }
        //ret
        Console.WriteLine(dp[N - 1]);
    }
    SimpleIO io = new SimpleIO();
    public static void Main(string[] args) { new Simple().Stream(); }
    void Stream() {
        Solve();
        io.writeFlush();
    }
}
class SimpleIO {
    string[] nextBuffer;
    int BufferCnt;
    char[] cs = new char[] { ' ' };
    StreamWriter sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
    public SimpleIO() {
        nextBuffer = new string[0];
        BufferCnt = 0;
        Console.SetOut(sw);
    }
    public string Next() {
        if (BufferCnt < nextBuffer.Length)
            return nextBuffer[BufferCnt++];
        string st = Console.ReadLine();
        while (st == "")
            st = Console.ReadLine();
        nextBuffer = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        BufferCnt = 0;
        return nextBuffer[BufferCnt++];
    }
    public string String => Next();
    public char Char => char.Parse(String);
    public int Int => int.Parse(String);
    public long Long => long.Parse(String);
    public double Double => double.Parse(String);
    public void writeFlush() { Console.Out.Flush(); }
}

Submission Info

Judge Result