Submission #974305

#	Time	Username	Problem	Language	Result	Execution time	Memory
974305		rahidilbayramli	Gondola (IOI14_gondola)	C++17	55 / 100	25 ms	5972 KiB

gondola

#include "gondola.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define all(v) v.begin(), v.end()
#define pb push_back
#define f first
#define s second
using namespace std;
using namespace __gnu_pbds;
typedef tree<pll, null_type, less<pll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
int valid(int n, int inputSeq[])
{
    int nxt[n+5], v[n+5];
    set<int>st;
    for(int i = 1; i <= n; i++)
    {
        v[i] = inputSeq[i-1];
        st.insert(v[i]);
    }
    for(int i = 1; i <= n; i++)
        nxt[i] = (i % n) + 1;
    bool flag = false;
    for(int i = 1; i <= n; i++)
    {
        if(v[i] <= n && v[(i%n)+1] <= n && nxt[v[i]] != v[(i%n)+1])
            flag = true;
    }
    if(flag || st.size() < n)
        return 0;
    return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    int v[n+5];
    int flag = 0;
    for(int i = 1; i <= n; i++){
        v[i] = gondolaSeq[i-1];
        if(v[i] <= n)
            flag = 1;
    }
    if(!flag)
    {
        vector<pii>vect;
        for(int i = 1; i <= n; i++)
            vect.pb({v[i], i});
        sort(all(vect));
        int last = n + 1, idx = 0;
        for(int i = 0; i < n; i++)
        {
            replacementSeq[idx] = vect[i].s;
            idx++;
            for(int j = last; j < vect[i].f; j++)
            {
                replacementSeq[idx] = j;
                idx++;
            }
            last = vect[i].f + 1;
        }
        return idx;
    }
    else
    {
        vector<pii>vect;
        int idx;
        for(int i = 1; i <= n; i++)
        {
            if(v[i] <= n && v[i] >= 1){
                idx = i;
                break;
            }
        }
        vect.pb({v[idx], v[idx]});
        int idxt = v[idx];
        for(int i = idx + 1; i <= n; i++)
        {
            idxt++;
            if(idxt == n + 1)
                idxt = 1;
            vect.pb({v[i], idxt});
        }
        idxt = v[idx];
        for(int i = idx - 1; i >= 1; i--)
        {
            idxt--;
            if(idxt == 0)
                idxt = n;
            vect.pb({v[i], idxt});
        }
        sort(all(vect));
        int last = n + 1;
        idx = 0;
        for(int i = 0; i < n; i++)
        {
            if(vect[i].f > n){
                replacementSeq[idx] = vect[i].s;
                idx++;
            }
            for(int j = last; j < vect[i].f; j++)
            {
                replacementSeq[idx] = j;
                idx++;
            }
            last = max(last, vect[i].f + 1);
        }
        return idx;
    }
}

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

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

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:35:26: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |     if(flag || st.size() < n)
      |                ~~~~~~~~~~^~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:92:17: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized]
   92 |         for(int i = idx - 1; i >= 1; i--)
      |                 ^

• 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