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Submission #780974

# Submission time Handle Problem Language Result Execution time Memory
780974 2023-07-12T15:14:12 Z vjudge1 Gondola (IOI14_gondola) C++17
60 / 100
 16 ms 2496 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include "gondola.h"
#define MAX 250000
#define MOD 1000000007
using namespace std;
int mark[MAX + 10];
vector <pair <int, int>> v;
int valid(int n, int inputSeq[])
{
    int posOrig = -1;
    for (int i = 0; i < n; i++)
    {
        if (mark[inputSeq[i]] == 1)
            return 0;
        if (inputSeq[i] <= n)
            posOrig = i;
        mark[inputSeq[i]] = 1;
    }
    if (posOrig == -1)
        return 1;
    int pos = posOrig;
    for (int i = 1; i <= n; i++)
    {
        if (inputSeq[pos] <= n && (inputSeq[pos] - inputSeq[posOrig] + n) % n != (pos - posOrig + n) % n)
            return 0;
        pos = (pos + 1) % n;
    }
    return 1;
}
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    int posOrig = -1;
    for (int i = 0; i < n; i++)
        if (gondolaSeq[i] <= n)
            posOrig = i;
    if (posOrig == -1)
        for (int i = 0; i < n; i++)
            v.push_back({gondolaSeq[i], i + 1});
    else
    {
        int pos = posOrig;
        int g = gondolaSeq[posOrig];
        for (int i = 1; i <= n; i++)
        {
            if (gondolaSeq[pos] > n)
                v.push_back({gondolaSeq[pos], g});
            pos = (pos + 1) % n;
            if (g == n - 1)
                g = n;
            else
                g = (g + 1) % n;
        }
    }
    sort(v.begin(), v.end());
    int l = 0, nn = n + 1;
    for (auto it : v)
    {
        replacementSeq[l] = it.second;
        l++;
        nn++;
        while (nn <= it.first)
        {
            replacementSeq[l] = nn - 1;
            l++;
            nn++;
        }
    }
    return l;
}
int fastPow(int base, int exp)
{
    int ans = 1;
    while (exp != 0)
        if (exp % 2 == 0)
        {
            exp = exp / 2;
            base = 1LL * base * base % MOD;
        }
        else
        {
            exp--;
            ans = 1LL * ans * base % MOD;
        }
    return ans;
}
int countReplacement(int n, int inputSeq[])
{
    if (valid(n, inputSeq) == 0)
        return 0;
    int posOrig = -1;
    for (int i = 0; i < n; i++)
        if (inputSeq[i] <= n)
            posOrig = i;
    int ans;
    if (posOrig == -1)
    {
        ans = n;
        for (int i = 0; i < n; i++)
            v.push_back({inputSeq[i], i + 1});
    }
    else
    {
        ans = 1;
        int pos = posOrig;
        int g = inputSeq[posOrig];
        for (int i = 1; i <= n; i++)
        {
            if (inputSeq[pos] > n)
                v.push_back({inputSeq[pos], g});
            pos = (pos + 1) % n;
            if (g == n - 1)
                g = n;
            else
                g = (g + 1) % n;
        }
    }
    sort(v.begin(), v.end());
    int cntGreater = v.size(), aux = n;
    for (auto it : v)
    {
        ans = 1LL * ans * fastPow(cntGreater, it.first - aux - 1) % MOD;
        cntGreater--;
        aux = it.first;
    }
    return ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 4 ms 540 KB Output is correct
7 Correct 7 ms 980 KB Output is correct
8 Correct 6 ms 852 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 8 ms 852 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 4 ms 596 KB Output is correct
7 Correct 7 ms 980 KB Output is correct
8 Correct 7 ms 852 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 8 ms 848 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 4 ms 1156 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 7 ms 980 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 7 ms 596 KB Output is correct
12 Correct 10 ms 580 KB Output is correct
13 Correct 11 ms 1488 KB Output is correct
14 Correct 7 ms 596 KB Output is correct
15 Correct 16 ms 2496 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Incorrect 0 ms 212 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Incorrect 0 ms 304 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Incorrect 1 ms 212 KB Output isn't correct
8 Halted 0 ms 0 KB -