Submission #584786

#	Time	Username	Problem	Language	Result	Execution time	Memory
584786		Belgutei	Gondola (IOI14_gondola)	C++17	20 / 100	29 ms	4644 KiB

gondola

#include "gondola.h"
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ff first
#define ss second
#define pb push_back
#define mk make_pair
#define MOD 1000000007
#define MOD1 1000000009

map<int,int> mp;
map<int,int> :: iterator it;

int valid(int n, int inputSeq[]) {
  mp.clear();
  int pos = -1;
  for(int i = 0; i < n; i ++) {
    if(inputSeq[i] <= n) {
      pos = i;
    }
    mp[inputSeq[i]] ++;
  }
  for(it = mp.begin(); it != mp.end(); it ++) {
    if(it -> ss > 1) {
      return 0;
    }
  }
  if(pos == -1) return 1;
  int val = inputSeq[pos];
  for(int i = pos + 1; i < n; i ++) {
    val ++;
    if(val == n + 1) val = 1;
    if(inputSeq[i] <= n && inputSeq[i] != val) return 0;
  }
  for(int i = 0; i < pos; i ++) {
    val ++;
    if(val == n + 1) val = 1;
    if(inputSeq[i] <= n && inputSeq[i] != val) return 0;
  }
  //
  return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
  for(int i = 0; i < n; i ++) {
    mp[gondolaSeq[i]] ++;
  }
  for(int i = 1; i <= n; i ++) {
    if(mp[i] == 0){
      replacementSeq[0] = i;
      return 1;
    }
    
  }
  int pos = -1, tmp_pos;
  int cnt = 0, mx = 0;
  for(int i = 0; i < n; i ++) {
    if(gondolaSeq[i] <= n) {
      pos = i;
    }
    else {
      if (mx < gondolaSeq[i]) {
        tmp_pos = i;
        mx = gondolaSeq[i];
      }
    }
    mp[gondolaSeq[i]] ++;
  }
  //
  if(pos == -1) return 0;
  int val = gondolaSeq[pos];
  int ans = 0;
  int target_val;
  //
  for(int i = pos + 1; i < n; i ++) {
    val ++;
    if(val == n + 1) val = 1;
    if(tmp_pos == i) {
      target_val = val;
      continue;
    }
    if(gondolaSeq[i] > n) {
      replacementSeq[ans] = val;
      ans ++;
    }
  }
  //
  for(int i = 0; i < pos; i ++) {
    val ++;
    if(val == n + 1) val = 1;
    if(tmp_pos == i) {
      target_val = val;
      continue;
    }
    if(gondolaSeq[i] > n) {
      replacementSeq[ans] = val;
      ans ++;
    }
  }
  //
  for(int i = gondolaSeq[tmp_pos] - 1; i > n; i --) {
    if(mp[i] == 0) {
      replacementSeq[ans] = i;
      ans ++;
    }
  }
  replacementSeq[ans] = target_val;
  ans ++;
  return ans;
}

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

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

Compilation message (stderr)

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:62:7: warning: unused variable 'cnt' [-Wunused-variable]
   62 |   int cnt = 0, mx = 0;
      |       ^~~
gondola.cpp:113:23: warning: 'target_val' may be used uninitialized in this function [-Wmaybe-uninitialized]
  113 |   replacementSeq[ans] = target_val;
      |   ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
gondola.cpp:107:26: warning: 'tmp_pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
  107 |   for(int i = gondolaSeq[tmp_pos] - 1; i > n; i --) {
      |                          ^~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10