Submission #3802640


Source Code Expand

/**
 * File    : C.cpp
 * Author  : Kazune Takahashi
 * Created : 2018-12-15 21:49:53
 * Powered by Visual Studio Code
 */

#include <iostream>
#include <iomanip>   // << fixed << setprecision(xxx)
#include <algorithm> // do { } while ( next_permutation(A, A+xxx) ) ;
#include <vector>
#include <string> // to_string(nnn) // substr(m, n) // stoi(nnn)
#include <complex>
#include <tuple>
#include <queue>
#include <stack>
#include <map> // if (M.find(key) != M.end()) { }
#include <set>
#include <functional>
#include <random> // auto rd = bind(uniform_int_distribution<int>(0, 9), mt19937(19920725));
#include <chrono> // std::chrono::system_clock::time_point start_time, end_time;
// start = std::chrono::system_clock::now();
// double elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(end_time-start_time).count();
#include <cctype>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
using namespace std;

#define DEBUG 0 // change 0 -> 1 if we need debug.

typedef long long ll;

// const int dx[4] = {1, 0, -1, 0};
// const int dy[4] = {0, 1, 0, -1};

const int C = 10000;
// const ll M = 1000000007;

int N;
int A[200010];
int K[C];

bool solve(int X)
{
  fill(K, K + A[0], 0);
  for (auto i = 0; i < N - 1; i++)
  {
    if (A[i] > A[i + 1])
    {
      continue;
    }
    else if (A[i] == C)
    {
      continue;
    }
    else
    {
      bool ok = false;
      for (auto j = A[i] - 1; j >= 0; j--)
      {
        K[j]++;
        if (K[j] == X)
        {
          K[j] = 0;
        }
        else
        {
          ok = true;
          break;
        }
      }
      if (!ok)
      {
        return false;
      }
      for (auto j = A[i]; j < A[i + 1]; j++)
      {
        K[j] = 0;
      }
    }
  }
  return true;
}

int main()
{
  cin >> N;
  for (auto i = 0; i < N; i++)
  {
    cin >> A[i];
    A[i] = min(C, A[i]);
  }
  reverse(A, A + N);
  int ub = N;
  int lb = 0;
  while (ub - lb > 1)
  {
    int t = (ub + lb) / 2;
    if (solve(t))
    {
      ub = t;
    }
    else
    {
      lb = t;
    }
  }
  cout << ub << endl;
}

Submission Info

Submission Time
Task C - Lexicographic constraints
User kazunetakahashi
Language C++14 (GCC 5.4.1)
Score 700
Code Size 2194 Byte
Status AC
Exec Time 1141 ms
Memory 1024 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 700 / 700
Status
AC × 2
AC × 31
Set Name Test Cases
Sample sample01.txt, sample02.txt
All sample01.txt, sample02.txt, in01.txt, in02.txt, in03.txt, in04.txt, in05.txt, in06.txt, in07.txt, in08.txt, in09.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, sample01.txt, sample02.txt
Case Name Status Exec Time Memory
in01.txt AC 110 ms 1024 KB
in02.txt AC 109 ms 1024 KB
in03.txt AC 110 ms 1024 KB
in04.txt AC 1141 ms 1024 KB
in05.txt AC 728 ms 1024 KB
in06.txt AC 1030 ms 1024 KB
in07.txt AC 617 ms 1024 KB
in08.txt AC 614 ms 1024 KB
in09.txt AC 44 ms 1024 KB
in10.txt AC 57 ms 1024 KB
in11.txt AC 61 ms 1024 KB
in12.txt AC 62 ms 1024 KB
in13.txt AC 62 ms 1024 KB
in14.txt AC 76 ms 1024 KB
in15.txt AC 67 ms 1024 KB
in16.txt AC 79 ms 1024 KB
in17.txt AC 74 ms 1024 KB
in18.txt AC 1 ms 256 KB
in19.txt AC 80 ms 1024 KB
in20.txt AC 51 ms 1024 KB
in21.txt AC 50 ms 1024 KB
in22.txt AC 51 ms 1024 KB
in23.txt AC 49 ms 1024 KB
in24.txt AC 51 ms 1024 KB
in25.txt AC 47 ms 1024 KB
in26.txt AC 45 ms 1024 KB
in27.txt AC 45 ms 1024 KB
sample01.txt AC 1 ms 256 KB
sample02.txt AC 1 ms 256 KB