제출 #652090

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
652090		alvinpiter	곤돌라 (IOI14_gondola)	C++14	10 / 100	35 ms	4944 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;

/*
* If there is a duplicate, return 0.
* If all numbers are > n, return 1.
* idxMini -> index of minimum number. If I go around (n - 1) steps starting from idxMini, the numbers which is <= n
  should appear in increasing order.
*/
int valid(int n, int inputSeq[]) {
  set<int> uniqNumbers;
  int idxMini = -1;
  for (int i = 0; i < n; i++) {
    // There is a duplicate
    if (uniqNumbers.find(inputSeq[i]) != uniqNumbers.end()) {
      return 0;
    }

    uniqNumbers.insert(inputSeq[i]);

    if (inputSeq[i] <= n) {
      if (idxMini == -1 || inputSeq[i] < inputSeq[idxMini]) {
        idxMini = i;
      }
    }
  }

  // All numbers are > n.
  if (idxMini == -1) {
    return 1;
  }

  int lastNumber = inputSeq[idxMini];
  for (int i = (idxMini + 1)%n, step = 1; step <= n - 1; i = (i + 1)%n, step++) {
    if (inputSeq[i] <= n) {
      if (inputSeq[i] < lastNumber) {
        return 0;
      }

      lastNumber = inputSeq[i];
    }
  }

  return 1;
}

//----------------------

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
  return -2;
}

//----------------------

int countReplacement(int n, int inputSeq[])
{
  return -3;
}

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