Submission #705264

#	Time	Username	Problem	Language	Result	Execution time	Memory
705264		ThegeekKnight16	Gondola (IOI14_gondola)	C++17	45 / 100	47 ms	6988 KiB

gondola

#include <bits/stdc++.h>
#include "gondola.h"
using namespace std;
const int MOD = 1e9 + 9;
const int MAXN = 1e5 + 10;
int expect[MAXN];
map<int, int> marc;

int mult(long long int a, long long int b)
{
    return ((a * b) % MOD);
}

int exp(int x, int n)
{
    if (n == 0) return 1;
    if (n == 1) return x;
    if (n % 2) return mult(x, exp(x, n-1));
    return exp(mult(x, x), n/2);
}

int valid(int n, int inputSeq[])
{
    for (int i = 0; i < n; i++)
    {
        if (marc[inputSeq[i]]) return 0;
        marc[inputSeq[i]] = 1;
    }

    bool Achei = false;
    for (int i = 0; i < n; i++)
    {
        if (!Achei && inputSeq[i] > n) continue;
        else if (!Achei && inputSeq[i] <= n)
        {
            expect[i] = inputSeq[i];
            Achei = true;
        }
        else if (Achei) expect[i] = (expect[i-1]+1);

        if (expect[i] > n) expect[i] -= n;
    }

    if (!expect[0]) expect[0] = expect[n-1]+1;
    if (expect[0] > n) expect[0] -= n;
    for (int i = 1; i < n && !expect[i]; i++)
    {
        expect[i] = expect[i-1]+1;
        if (expect[i] > n) expect[i] -= n;
    }

    for (int i = 0; i < n; i++)
    {
        if (inputSeq[i] > n) continue;
        if (expect[i] != inputSeq[i]) return 0;
    }
    return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    if (!valid(n, gondolaSeq)) return 0;
    int tam = 0;
    int atual = n+1;
    set<pair<int, int> > fora;
    for (int i = 0; i < n; i++) if (gondolaSeq[i] > n) fora.emplace(expect[i], i);

    while (!fora.empty())
    {
        replacementSeq[tam++] = fora.begin()->first;
        int id = fora.begin()->second;
        fora.erase(fora.begin());
        if (atual < gondolaSeq[id]) fora.emplace(atual, id);
        atual++;
    }

    return tam;
}

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

int countReplacement(int n, int inputSeq[])
{
    // cerr << "ABA" << '\n';
    if (!valid(n, inputSeq)) return 0;
    set<int> fora;
    // cerr << "CABA" << '\n';
    for (int i = 0; i < n; i++) if (inputSeq[i] > n) fora.emplace(inputSeq[i]);
    int atual = n+1;
    int resp = 1;
    // cerr << "SABA" << '\n';
    while (!fora.empty())
    {
        resp = mult(resp, exp(fora.size(), *fora.begin() - atual));
        atual = (*fora.begin());
        atual++;
        fora.erase(fora.begin());
    }
    // cerr << "VABA" << '\n';

    return resp;
}

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