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Submission #1019839

# Submission time Handle Problem Language Result Execution time Memory
1019839 2024-07-11T09:35:50 Z NValchanov Gondola (IOI14_gondola) C++17
60 / 100
 33 ms 5340 KB 
#include <bits/stdc++.h>
#include "gondola.h"

#define endl '\n'

using namespace std;

typedef long long ll;

const int MOD = 1e9 + 7;

int valid(int n, int a[])
{
    set < int > cnt;

    int min_idx = 0;

    for(int i = 1; i < n; i++)
    {
        if(a[i] < a[min_idx])
            min_idx = i;

        if(cnt.count(a[i]))
            return 0;
        
        cnt.insert(a[i]);
    }

    vector < int > order;

    for(int i = min_idx; i < n; i++)
    {
        order.push_back(a[i]);
    }
    for(int i = 0; i < min_idx; i++)
    {
        order.push_back(a[i]);
    }

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

    return 1;
}

int replacement(int n, int a[], int ans[])
{
    int min_idx = 0;
    int maxel = 0;

    for(int i = 0; i < n; i++)
    {
        if(a[i] < a[min_idx])
            min_idx = i;
        
        maxel = max(maxel, a[i]);
    }

    vector < int > order;

    for(int i = min_idx; i < n; i++)
    {
        order.push_back(a[i]);
    }
    for(int i = 0; i < min_idx; i++)
    {
        order.push_back(a[i]);
    }

    vector < pair < int, int > > broken;

    for(int i = 0; i < n; i++)
    {
        if(order[i] > n)
            broken.push_back({order[i], i});
    }

    sort(broken.begin(), broken.end());

    if(order.front() > n)
        order.front() = 1;

    for(int i = 1; i < n; i++)
    {
        if(order[i - 1] == n)
        {
            order[i] = 1;
        }
        else
        {
            order[i] = order[i - 1] + 1;
        }
    }

    int last = n;
    int pos = 0;

    for(pair < int, int > p : broken)
    {
        int val = p.first;
        int idx = p.second;

        while(last < val)
        {
            ans[pos++] = order[idx];
            order[idx] = ++last;
        }
    }

    return maxel - n;
}

ll binpow(ll a, ll b)
{
    ll result = 1;

    while(b)
    {
        if(b & 1)
            result = (result * a) % MOD;

        a = (a * a) % MOD;
        b /= 2;
    }

    return result;
}

int countReplacement(int n, int a[])
{
    if(!valid(n, a))
        return 0;

    vector < int > broken;

    for(int i = 0; i < n; i++)
    {
        if(a[i] > n)
            broken.push_back(a[i]);
    }

    sort(broken.begin(), broken.end());

    int last = n;
    ll ans = 1;
    int sz = broken.size();

    for(int i = 0; i < sz; i++)
    {
        ans = 1LL * ans * binpow(sz - i, broken[i] - last - 1) % MOD;
        last = broken[i];
    }

    if(sz == n)
        ans = 1LL * ans * sz % MOD;

    return ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 10 ms 2652 KB Output is correct
7 Correct 6 ms 600 KB Output is correct
8 Correct 18 ms 4568 KB Output is correct
9 Correct 5 ms 1804 KB Output is correct
10 Correct 29 ms 5340 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 10 ms 2740 KB Output is correct
7 Correct 6 ms 604 KB Output is correct
8 Correct 19 ms 4580 KB Output is correct
9 Correct 6 ms 1624 KB Output is correct
10 Correct 24 ms 5200 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 13 ms 2396 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 33 ms 5340 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 6 ms 1240 KB Output is correct
12 Correct 7 ms 1240 KB Output is correct
13 Correct 10 ms 1368 KB Output is correct
14 Correct 6 ms 1236 KB Output is correct
15 Correct 12 ms 2316 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 348 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 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Halted 0 ms 0 KB -