#15206 (Java) No.139 交差点

• 問題: No.139 交差点
• ユーザー: t8m8⛄️
• 提出日時: 2015-03-10 19:49:29
• 言語: Java (openjdk 23)
• 結果: AC
• 実行時間: 129 ms / 5,000 ms
• コード長: 4,259 bytes
• コンパイル時間: 3,969 ms
• コンパイル使用メモリ: 78,540 KB
• 実行使用メモリ: 39,624 KB
• 最終ジャッジ日時: 2024-06-24 17:05:04
• 合計ジャッジ時間: 6,943 ms
• ジャッジサーバーID （参考情報）: judge4 / judge5

ファイルパターン	結果
sample	AC * 3
other	AC * 28

ソースコード

//No.139 交差点

import java.util.*;
import java.io.*;
import static java.util.Arrays.*;
import static java.lang.Math.*;

public class No139 {

    static final InputStream in = System.in;
    static final PrintWriter out = new PrintWriter(System.out,false);

    static void solve(){
        n = nextInt();
        int l = nextInt();
        int[] x = new int[n];
        int[] w = new int[n];
        t = new int[n];
        for (int i=0; i<n; i++) {
            x[i] = nextInt();
            w[i] = nextInt();
            t[i] = nextInt();
        }

        tt = new int[n];
        isRed = new boolean[n];
        int ptr = 0;
        for (int i=0; i<l; i++) {
            if (ptr < n && i == x[ptr]) {
                if (isRed[ptr]) while (isRed[ptr]) timePass();
                else while (isRed[ptr] || w[ptr] > t[ptr] - tt[ptr]) timePass();
                ptr++;
            }
            timePass();
        }
        out.println(ans);
    }

    static int n;
    static int[] t;
    static int[] tt;
    static boolean[] isRed;
    static int ans = 0;

    static void timePass() {
        for (int i=0; i<n; i++) {
            if (++tt[i] >= t[i]) {
                isRed[i] = !isRed[i];
                tt[i] = 0;
            }
        }
        ans++;
    }

    public static void main(String[] args) throws Exception {
        long start = System.currentTimeMillis();

        solve();
        out.flush();

        long end = System.currentTimeMillis();
        //trace(end-start + "ms");
        in.close();
    }

    static void trace(Object... o) { System.out.println(deepToString(o));}

    static final byte[] buf = new byte[1024];
    static int ptr = 0;
    static int buflen = 0;

    static boolean hasNextByte() {
        if (ptr < buflen)
            return true;
        ptr = 0;
        try{
            buflen = in.read(buf);
        }catch (IOException e) {e.printStackTrace();}
        if (buflen <= 0)
            return false;
        return true;
    }

    static int readByte() { if (hasNextByte()) return buf[ptr++]; else return -1;}

    static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}

    static void skip() { while(hasNextByte() && !isPrintableChar(buf[ptr])) ptr++;}

    static boolean hasNext() {skip(); return hasNextByte();}

    static String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while (isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }

    static long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        boolean minus = false;
        long num = readByte();

        if(num == '-'){
            num = 0;
            minus = true;
        }else if (num < '0' || '9' < num){
            throw new NumberFormatException();
        }else{
            num -= '0';
        }
        
        while(true){
            int b = readByte();
            if('0' <= b && b <= '9')
                num = num * 10 + (b - '0');
            else if(b == -1 || !isPrintableChar(b))
                return minus ? -num : num;
            else
                throw new NoSuchElementException();
        }
    }

    static int nextInt() {
        long num = nextLong();
        if (num < Integer.MIN_VALUE || Integer.MAX_VALUE < num)
            throw new NumberFormatException();
        return (int)num;
    }

    static double nextDouble() {
        return Double.parseDouble(next());
    }

    static char nextChar() {
        if (!hasNext()) throw new NoSuchElementException();
        return (char)readByte();
    }

    static String nextLine() {
        while (hasNextByte() && (buf[ptr] == '\n' || buf[ptr] == '\r')) ptr++;
        if (!hasNextByte()) throw new NoSuchElementException();

        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while (b != '\n' && b != '\r') {
            sb.appendCodePoint(b);
            b = readByte();
        }

        return sb.toString();
    }

    static int[] nextArrayInt(int n) {
        int[] a = new int[n];
        for (int i=0; i<n; i++) a[i] = nextInt();
        return a;
    }
}