Submission #684944

#	Time	Username	Problem	Language	Result	Execution time	Memory
684944		beaconmc	Gondola (IOI14_gondola)	C++14	55 / 100	28 ms	4564 KiB

gondola

#include "gondola.h"


#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

typedef int ll;
using namespace std;
//using namespace __gnu_pbds;

#define FOR(i, x, y) for(ll i=x; i<y; i++)
#define FORNEG(i, x, y) for(ll i=x; i>y; i--)
//#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>
#define fast() ios_base::sync_with_stdio(false);cin.tie(NULL)



int valid(int n, int inputSeq[])
{
  ll sus = -1;
  set<ll> realsus;
  FOR(i,0,n){
    realsus.insert(inputSeq[i]);
    if (inputSeq[i] <= n){
      sus = i;
    }
  }
  if (realsus.size() != n) return 0;
  if (sus==-1) return 1;
  ll cnt = inputSeq[sus];

  FOR(i, sus, sus+n){
    if (cnt > n) cnt -= n;
    ll imp = i;
    if (imp>=n) imp -= n;
    if (inputSeq[imp] != cnt && inputSeq[imp] <= n) return 0;
    cnt++;
  }
  return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{

  vector<ll> sussy(n);
  ll sus = -1;
  FOR(i,0,n){
    if (gondolaSeq[i] <= n){
      sus = i;
    }
  }

  ll cnt = gondolaSeq[sus];
  if (sus==-1) sus = 0, cnt = 1;
  FOR(i,sus,sus+n){
    if (cnt>n) cnt-=n;
    sussy[i%n] = cnt;
    cnt++;
  }

  ll maxi = -1;
  ll maxpos = -1;
  FOR(i,0,n){
    if (gondolaSeq[i] > maxi){
      maxpos = i;
      maxi = max(maxi, gondolaSeq[i]);
    }
  } 
  vector<ll> stuff(maxi-n);
  FOR(i,0,maxi-n) stuff[i] = -1;
  FOR(i,0,n){
    if (gondolaSeq[i] > n){
      stuff[gondolaSeq[i]-n-1] = i;
    }
  }


  FOR(i,0,maxi-n){
    if (stuff[i] != -1){
      replacementSeq[i] = sussy[stuff[i]];
      sussy[stuff[i]] = i+n+1;
    }else{
      replacementSeq[i] = sussy[maxpos];
      sussy[maxpos] = i+n+1;
    }
    
  }

  return maxi-n;
}

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

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

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:29:22: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   29 |   if (realsus.size() != n) return 0;
      |       ~~~~~~~~~~~~~~~^~~~

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