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Submission #66473

# Submission time Handle Problem Language Result Execution time Memory
66473 2018-08-10T17:02:13 Z Kubalionzzale Gondola (IOI14_gondola) C++14
90 / 100
 69 ms 3884 KB 
#include "gondola.h"

#include <iostream>
#include <functional>
#include <algorithm>
#include <set>

long long int mod = 1e9 + 9;

long long int powmod(long long int a, long long int b)
{
    long long int res = 1;
    a %= mod;

    for (; b > 0; b >>= 1)
    {
        if (b & 1)
            res = (res * a) % mod;
        a = (a * a) % mod;
    }

    return res;
}

int valid(int n, int a[])
{
    bool visited[250010] = { 0 };
    int remember = -1;
    for (int i = 0; i < n; ++i)
    {
        --a[i];
        if (visited[a[i]])
            return 0;
        else
            visited[a[i]] = 1;

        if (a[i] < n)
        {
            if (remember == -1)
                remember = i;
            else
            {
                int val1 = a[remember];
                int val2 = a[i];

                if (val1 > val2)
                {
                    if (remember == (i + (val1 - val2)) % n)
                        continue;
                    else
                        return 0;
                }
                else
                {
                    if (i == (remember + (val2 - val1)) % n)
                        continue;
                    else
                        return 0;
                }
            }
        }
    }

    return 1;
}

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

int replacement(int n, int a[], int ans[])
{
    int model[100010] = { 0 };
    std::set< std::pair<int, int>, std::greater< std::pair<int, int> > > set;
    int diff = 0;
    bool visited[250010] = { 0 };
    int max = 0;
    for (int i = 0; i < n; ++i)
    {
        if (a[i] <= n)
        {
            --a[i];

            diff = (i - a[i] + n) % n;

            ++a[i];
        }

        if (a[i] > n)
            set.insert(std::make_pair(a[i], i));

        visited[a[i]] = true;
        if (a[i] > max)
            max = a[i];
    }

    int lastunused = max - 1;
    while (visited[lastunused])
    {
        --lastunused;
    }

    if (max == n)
        return 0;
    int cnt = max - n;
    int returning = cnt;
    --cnt;

    while (set.empty() == false)
    {
        std::pair<int, int> cur = *set.begin();
        set.erase(set.begin());

        if (lastunused <= n)
        {
            ans[cnt] = ((cur.second - diff) + n) % n;
            ++ans[cnt];
            --cnt;
        }
        else
        {
            ans[cnt] = lastunused;
            --cnt;

            cur.first = lastunused;
            set.insert(cur);
            --lastunused;

            while (visited[lastunused])
            {
                --lastunused;
            }
        }
    }

    return returning;
}

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

int countReplacement(int n, int a[])
{
    bool visited[250010] = { 0 };
    int remember = -1;
    int max = 0;
    for (int i = 0; i < n; ++i)
    {
        --a[i];
        if (visited[a[i]])
            return 0;
        else
            visited[a[i]] = 1;

        if (a[i] < n)
        {
            if (remember == -1)
                remember = i;
            else
            {
                int val1 = a[remember];
                int val2 = a[i];

                if (val1 > val2)
                {
                    if (remember == (i + (val1 - val2)) % n)
                        continue;
                    else
                        return 0;
                }
                else
                {
                    if (i == (remember + (val2 - val1)) % n)
                        continue;
                    else
                        return 0;
                }
            }
        }
    }

    std::set<int> set;
    long long int multi = 0;
    for (int i = 0; i < n; ++i)
    {
        ++a[i];
        if (a[i] > max)
            max = a[i];

        if (a[i] > n)
            set.insert(a[i]), ++multi;
    }

    set.insert(n);

    if (max == n)
        return 1;

    long long int ans = 1LL;
    for (auto it = set.begin(); it != set.end(); ++it)
    {
        auto it2 = it;
        ++it2;
        if (it2 == set.end())
            break;

        long long int val1 = *it;
        long long int val2 = *it2;

        if (val2 - val1 == 1)
        {
            --multi;
        }
        else
        {
            ans = (ans * powmod(multi, val2 - val1 - 1)) % mod;
            --multi;
        }
    }

    if (remember == -1)
        ans *= n;
    ans %= mod;

    return ans;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:71:9: warning: unused variable 'model' [-Wunused-variable]
     int model[100010] = { 0 };
         ^~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 504 KB Output is correct
2 Correct 2 ms 740 KB Output is correct
3 Correct 3 ms 784 KB Output is correct
4 Correct 3 ms 784 KB Output is correct
5 Correct 3 ms 784 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 784 KB Output is correct
2 Correct 3 ms 784 KB Output is correct
3 Correct 3 ms 936 KB Output is correct
4 Correct 3 ms 936 KB Output is correct
5 Correct 2 ms 936 KB Output is correct
6 Correct 11 ms 1004 KB Output is correct
7 Correct 18 ms 1132 KB Output is correct
8 Correct 13 ms 1132 KB Output is correct
9 Correct 6 ms 1132 KB Output is correct
10 Correct 14 ms 1132 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1132 KB Output is correct
2 Correct 2 ms 1132 KB Output is correct
3 Correct 3 ms 1132 KB Output is correct
4 Correct 2 ms 1132 KB Output is correct
5 Correct 3 ms 1132 KB Output is correct
6 Correct 8 ms 1132 KB Output is correct
7 Correct 21 ms 1152 KB Output is correct
8 Correct 13 ms 1152 KB Output is correct
9 Correct 9 ms 1152 KB Output is correct
10 Correct 15 ms 1152 KB Output is correct
11 Correct 3 ms 1152 KB Output is correct
12 Correct 2 ms 1152 KB Output is correct
13 Correct 14 ms 1152 KB Output is correct
14 Correct 3 ms 1152 KB Output is correct
15 Correct 16 ms 1152 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1152 KB Output is correct
2 Correct 3 ms 1152 KB Output is correct
3 Correct 3 ms 1152 KB Output is correct
4 Correct 3 ms 1152 KB Output is correct
5 Correct 2 ms 1152 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1152 KB Output is correct
2 Correct 3 ms 1152 KB Output is correct
3 Correct 2 ms 1152 KB Output is correct
4 Correct 3 ms 1152 KB Output is correct
5 Correct 2 ms 1152 KB Output is correct
6 Correct 2 ms 1152 KB Output is correct
7 Correct 3 ms 1152 KB Output is correct
8 Correct 4 ms 1152 KB Output is correct
9 Correct 3 ms 1152 KB Output is correct
10 Correct 3 ms 1152 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1152 KB Output is correct
2 Correct 2 ms 1152 KB Output is correct
3 Correct 2 ms 1152 KB Output is correct
4 Correct 3 ms 1152 KB Output is correct
5 Correct 3 ms 1152 KB Output is correct
6 Correct 2 ms 1152 KB Output is correct
7 Correct 3 ms 1152 KB Output is correct
8 Correct 5 ms 1152 KB Output is correct
9 Correct 4 ms 1152 KB Output is correct
10 Correct 4 ms 1152 KB Output is correct
11 Correct 14 ms 1152 KB Output is correct
12 Correct 16 ms 1196 KB Output is correct
13 Correct 39 ms 3048 KB Output is correct
14 Correct 12 ms 3048 KB Output is correct
15 Correct 69 ms 3432 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3432 KB Output is correct
2 Correct 2 ms 3432 KB Output is correct
3 Correct 3 ms 3432 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3432 KB Output is correct
2 Correct 3 ms 3432 KB Output is correct
3 Correct 2 ms 3432 KB Output is correct
4 Correct 4 ms 3432 KB Output is correct
5 Correct 2 ms 3432 KB Output is correct
6 Correct 3 ms 3432 KB Output is correct
7 Correct 3 ms 3432 KB Output is correct
8 Correct 3 ms 3432 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3432 KB Output is correct
2 Correct 3 ms 3432 KB Output is correct
3 Correct 3 ms 3432 KB Output is correct
4 Correct 3 ms 3432 KB Output is correct
5 Correct 2 ms 3432 KB Output is correct
6 Correct 3 ms 3432 KB Output is correct
7 Correct 3 ms 3432 KB Output is correct
8 Correct 3 ms 3432 KB Output is correct
9 Correct 52 ms 3884 KB Output is correct
10 Correct 34 ms 3884 KB Output is correct
11 Correct 16 ms 3884 KB Output is correct
12 Correct 21 ms 3884 KB Output is correct
13 Correct 6 ms 3884 KB Output is correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3884 KB Output is correct
2 Correct 2 ms 3884 KB Output is correct
3 Correct 2 ms 3884 KB Output is correct
4 Correct 3 ms 3884 KB Output is correct
5 Correct 3 ms 3884 KB Output is correct
6 Correct 2 ms 3884 KB Output is correct
7 Correct 2 ms 3884 KB Output is correct
8 Correct 3 ms 3884 KB Output is correct
9 Correct 48 ms 3884 KB Output is correct
10 Correct 45 ms 3884 KB Output is correct
11 Correct 16 ms 3884 KB Output is correct
12 Correct 22 ms 3884 KB Output is correct
13 Correct 8 ms 3884 KB Output is correct
14 Runtime error 21 ms 3884 KB Execution killed with signal 11 (could be triggered by violating memory limits)
15 Halted 0 ms 0 KB -