結果

問題 No.1008 Bench Craftsman
ユーザー りあんりあん
提出日時 2020-03-06 21:53:55
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 645 ms / 2,000 ms
コード長 9,225 bytes
コンパイル時間 3,436 ms
コンパイル使用メモリ 114,544 KB
実行使用メモリ 62,784 KB
最終ジャッジ日時 2023-08-04 09:39:13
合計ジャッジ時間 16,285 ms
ジャッジサーバーID
（参考情報） 		judge13 / judge12
このコードへのチャレンジ（β）

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 69 ms
19,916 KB
testcase_01 AC 68 ms
22,024 KB
testcase_02 AC 67 ms
22,072 KB
testcase_03 AC 69 ms
22,020 KB
testcase_04 AC 69 ms
19,916 KB
testcase_05 AC 629 ms
58,616 KB
testcase_06 AC 353 ms
58,372 KB
testcase_07 AC 67 ms
21,884 KB
testcase_08 AC 79 ms
24,112 KB
testcase_09 AC 228 ms
27,084 KB
testcase_10 AC 637 ms
60,612 KB
testcase_11 AC 645 ms
58,704 KB
testcase_12 AC 635 ms
58,684 KB
testcase_13 AC 641 ms
60,724 KB
testcase_14 AC 643 ms
60,760 KB
testcase_15 AC 272 ms
46,644 KB
testcase_16 AC 641 ms
62,784 KB
testcase_17 AC 266 ms
46,612 KB
testcase_18 AC 637 ms
58,800 KB
testcase_19 AC 641 ms
60,740 KB
testcase_20 AC 300 ms
51,900 KB
testcase_21 AC 298 ms
50,504 KB
testcase_22 AC 314 ms
42,960 KB
testcase_23 AC 465 ms
55,784 KB
testcase_24 AC 415 ms
51,696 KB
testcase_25 AC 343 ms
56,104 KB
testcase_26 AC 273 ms
53,728 KB
testcase_27 AC 259 ms
39,432 KB
testcase_28 AC 411 ms
53,220 KB
testcase_29 AC 534 ms
56,440 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc)
Copyright (C) Microsoft Corporation. All rights reserved.

ソースコード

diff # 

using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Threading;
using System.Text;
using System.Text.RegularExpressions;
using System.Diagnostics;
using static util;
using P = pair<int, int>;

class Program {
    static void Main(string[] args) {
        var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
        var solver = new Solver(sw);
        // var t = new Thread(solver.solve, 1 << 26); // 64 MB
        // t.Start();
        // t.Join();
        solver.solve();
        sw.Flush();
    }
}

class Solver {
    StreamWriter sw;
    Scan sc;
    void Prt(string a) => sw.WriteLine(a);
    void Prt<T>(IEnumerable<T> a) => Prt(string.Join(" ", a));
    void Prt(params object[] a) => Prt(string.Join(" ", a));
    public Solver(StreamWriter sw) {
        this.sw = sw;
        this.sc = new Scan();
    }

    public void solve() {
        int n, m;
        sc.Multi(out n, out m);
        var a = sc.LongArr;
        var lis = new List<int>[n];
        for (int i = 0; i < n; i++)
        {
            lis[i] = new List<int>();
        }
        var s = new long[n];
        for (int i = 0; i < m; i++)
        {
            int x, w;
            sc.Multi(out x, out w);
            --x;
            lis[x].Add(w);
            s[x] += w;
        }
        for (int i = 0; i < n; i++)
        {
            if (s[i] >= a[i]) {
                Prt(-1);
                return;
            }
        }
        if (s.Sum() < a.Min()) {
            Prt(0);
            return;
        }
        int ng = 0, ok = (1 << 20);
        while (ok - ng > 1) {
            int mid = (ok + ng) / 2;
            var l = new long[n];
            {
                var diff = new long[n + 1];
                for (int i = 0; i < n; i++)
                {
                    if (i > 0) diff[i] += diff[i - 1];
                    l[i] = (i > 0 ? l[i - 1] : 0) + diff[i];
                    foreach (var item in lis[i])
                    {
                        l[i] += item;
                        int d = item / mid;
                        diff[i + 1] += -mid;
                        diff[Math.Min(n, i + 1 + d)] += mid;
                        diff[Math.Min(n, i + 1 + d)] += -(item % mid);
                        diff[Math.Min(n, i + 1 + d + 1)] += item % mid;
                    }
                }
            }
            Array.Reverse(lis);
            var r = new long[n];
            {
                var diff = new long[n + 1];
                for (int i = 0; i < n; i++)
                {
                    if (i > 0) diff[i] += diff[i - 1];
                    r[i] = (i > 0 ? r[i - 1] : 0) + diff[i];
                    foreach (var item in lis[i])
                    {
                        r[i] += item;
                        int d = item / mid;
                        diff[i + 1] += -mid;
                        diff[Math.Min(n, i + 1 + d)] += mid;
                        diff[Math.Min(n, i + 1 + d)] += -(item % mid);
                        diff[Math.Min(n, i + 1 + d + 1)] += item % mid;
                    }
                }
            }
            Array.Reverse(lis);
            Array.Reverse(r);
            // DBG(mid);
            // DBG(l);
            // DBG(r);
            // DBG(Enumerable.Range(0, n).Select(i => l[i] + r[i] - s[i]));
            bool f = true;
            for (int i = 0; i < n; i++)
            {
                f &= l[i] + r[i] - s[i] < a[i];
            }
            if (f) {
                ok = mid;
            }
            else {
                ng = mid;
            }
        }
        Prt(ok);
    }
}

class pair<T, U> : IComparable<pair<T, U>> {
    public T v1;
    public U v2;
    public pair() : this(default(T), default(U)) {}
    public pair(T v1, U v2) { this.v1 = v1; this.v2 = v2; }
    public int CompareTo(pair<T, U> a) {
        int c = Comparer<T>.Default.Compare(v1, a.v1);
        return c != 0 ? c : Comparer<U>.Default.Compare(v2, a.v2);
    }
    public override string ToString() => v1 + " " + v2;
    public void Deconstruct(out T a, out U b) { a = v1; b = v2; }
}
static class util {
    public static readonly int M = 1000000007;
    // public static readonly int M = 998244353;
    public static readonly long LM = 1L << 60;
    public static readonly double eps = 1e-11;
    public static void DBG(string a) => Console.Error.WriteLine(a);
    public static void DBG<T>(IEnumerable<T> a) => DBG(string.Join(" ", a));
    public static void DBG(params object[] a) => DBG(string.Join(" ", a));
    public static void Assert(params bool[] conds) {
        foreach (var cond in conds) if (!cond) throw new Exception();
    }
    public static pair<T, U> make_pair<T, U>(T v1, U v2) => new pair<T, U>(v1, v2);
    public static int CompareList<T>(IList<T> a, IList<T> b) where T : IComparable<T> {
        for (int i = 0; i < a.Count && i < b.Count; i++)
            if (a[i].CompareTo(b[i]) != 0) return a[i].CompareTo(b[i]);
        return a.Count.CompareTo(b.Count);
    }
    public static bool inside(int i, int j, int h, int w) => i >= 0 && i < h && j >= 0 && j < w;
    static readonly int[] dd = { 0, 1, 0, -1 };
    // static readonly string dstring = "RDLU";
    public static P[] adjacents(int i, int j)
        => Enumerable.Range(0, dd.Length).Select(k => new P(i + dd[k], j + dd[k ^ 1])).ToArray();
    public static P[] adjacents(int i, int j, int h, int w)
        => Enumerable.Range(0, dd.Length).Select(k => new P(i + dd[k], j + dd[k ^ 1]))
                                         .Where(p => inside(p.v1, p.v2, h, w)).ToArray();
    public static P[] adjacents(this P p) => adjacents(p.v1, p.v2);
    public static P[] adjacents(this P p, int h, int w) => adjacents(p.v1, p.v2, h, w);
    public static Dictionary<T, int> compress<T>(this IEnumerable<T> a)
        => a.Distinct().OrderBy(v => v).Select((v, i) => new { v, i }).ToDictionary(p => p.v, p => p.i);
    public static Dictionary<T, int> compress<T>(params IEnumerable<T>[] a) => compress(a.Aggregate(Enumerable.Union));
    public static T[] inv<T>(this Dictionary<T, int> dic) {
        var res = new T[dic.Count];
        foreach (var item in dic) res[item.Value] = item.Key;
        return res;
    }
    public static void swap<T>(ref T a, ref T b) where T : struct { var t = a; a = b; b = t; }
    public static void swap<T>(this IList<T> a, int i, int j) where T : struct { var t = a[i]; a[i] = a[j]; a[j] = t; }
    public static T[] copy<T>(this IList<T> a) {
        var ret = new T[a.Count];
        for (int i = 0; i < a.Count; i++) ret[i] = a[i];
        return ret;
    }
    public static void Deconstruct<T>(this IList<T> v, out T a) {
        a = v[0];
    }
    public static void Deconstruct<T>(this IList<T> v, out T a, out T b) {
        a = v[0]; b = v[1];
    }
    public static void Deconstruct<T>(this IList<T> v, out T a, out T b, out T c) {
        a = v[0]; b = v[1]; c = v[2];
    }
    public static void Deconstruct<T>(this IList<T> v, out T a, out T b, out T c, out T d) {
        a = v[0]; b = v[1]; c = v[2]; d = v[3];
    }
    public static void Deconstruct<T>(this IList<T> v, out T a, out T b, out T c, out T d, out T e) {
        a = v[0]; b = v[1]; c = v[2]; d = v[3]; e = v[4];
    }
}

class Scan {
    StreamReader sr;
    public Scan() { sr = new StreamReader(Console.OpenStandardInput()); }
    public Scan(string path) { sr = new StreamReader(path); }
    public int Int => int.Parse(Str);
    public long Long => long.Parse(Str);
    public double Double => double.Parse(Str);
    public string Str => sr.ReadLine().Trim();
    public pair<T, U> Pair<T, U>() {
        T a; U b;
        Multi(out a, out b);
        return new pair<T, U>(a, b);
    }
    public P P => Pair<int, int>();
    public int[] IntArr => StrArr.Select(int.Parse).ToArray();
    public long[] LongArr => StrArr.Select(long.Parse).ToArray();
    public double[] DoubleArr => StrArr.Select(double.Parse).ToArray();
    public string[] StrArr => Str.Split(new[]{' '}, StringSplitOptions.RemoveEmptyEntries);
    bool eq<T, U>() => typeof(T).Equals(typeof(U));
    T ct<T, U>(U a) => (T)Convert.ChangeType(a, typeof(T));
    T cv<T>(string s) => eq<T, int>()    ? ct<T, int>(int.Parse(s))
                       : eq<T, long>()   ? ct<T, long>(long.Parse(s))
                       : eq<T, double>() ? ct<T, double>(double.Parse(s))
                       : eq<T, char>()   ? ct<T, char>(s[0])
                                         : ct<T, string>(s);
    public void Multi<T>(out T a) => a = cv<T>(Str);
    public void Multi<T, U>(out T a, out U b) {
        var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]);
    }
    public void Multi<T, U, V>(out T a, out U b, out V c) {
        var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]); c = cv<V>(ar[2]);
    }
    public void Multi<T, U, V, W>(out T a, out U b, out V c, out W d) {
        var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]); c = cv<V>(ar[2]); d = cv<W>(ar[3]);
    }
    public void Multi<T, U, V, W, X>(out T a, out U b, out V c, out W d, out X e) {
        var ar = StrArr; a = cv<T>(ar[0]); b = cv<U>(ar[1]); c = cv<V>(ar[2]); d = cv<W>(ar[3]); e = cv<X>(ar[4]);
    }
}
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