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Submission #243258

# Submission time Handle Problem Language Result Execution time Memory
243258 2020-06-30T16:11:07 Z Kubin Gondola (IOI14_gondola) C++17
60 / 100
 32 ms 3968 KB 
#include <bits/stdc++.h>
#include <ext/numeric>
#ifndef XHOVA
#include "gondola.h"
#endif

using namespace std;
using __gnu_cxx::power;

void normalize(int n, int A[])
{
    int k = -1;
    for(int i = 0; i < n and k == -1; i++)
        if(A[i] <= n)
            k = (n + i - (A[i]-1)) % n;
    if(k != -1)
        rotate(A, A + k, A + n);
}

int valid(int n, int A[])
{
    normalize(n, A);
    for(int i = 0; i < n; i++)
        if(A[i] <= n and A[i]-1 != i)
            return false;
    return unordered_set<int>(A, A + n).size() == (size_t)n;
}

int replacement(int n, int A[], int out[])
{
    normalize(n, A);
    vector<pair<int, int>> re;
    for(int i = 0; i < n; i++)
        if(A[i] > n)
            re.emplace_back(A[i], i);
    sort(re.begin(), re.end());

    vector<int> B(n);
    iota(B.begin(), B.end(), 1);
    int l = 0;
    for(auto [x, i] : re)
        while(n+l < x)
            out[l++] = B[i], B[i] = n+l;
    return l;
}

constexpr uint64_t Mod = 1e9 + 7;
struct mod_multiplies : multiplies<uint64_t>
{
    uint64_t operator() (uint64_t a, uint64_t b) { return (a * b) % Mod; }
} Z;

int countReplacement(int n, int A[])
{
    if(not valid(n, A))
        return 0;

    vector<int> re;
    for(int i = 0; i < n; i++)
        if(A[i] > n)
            re.push_back(A[i]);
    sort(re.begin(), re.end());

    uint64_t result = n == (int)re.size() ? n : 1;

    vector<int> B(n);
    iota(B.begin(), B.end(), 1);
    int l = 1;
    for(int k = 0; k < (int) re.size(); k++)
    {
        result *= power(uint64_t(re.size() - k), re[k] - (n+l), Z);
        result %= Mod;
        l = re[k] - n + 1;
    }

    return result;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 13 ms 1920 KB Output is correct
7 Correct 17 ms 640 KB Output is correct
8 Correct 20 ms 3456 KB Output is correct
9 Correct 10 ms 1280 KB Output is correct
10 Correct 22 ms 3968 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 16 ms 1920 KB Output is correct
7 Correct 17 ms 640 KB Output is correct
8 Correct 20 ms 3456 KB Output is correct
9 Correct 10 ms 1280 KB Output is correct
10 Correct 22 ms 3968 KB Output is correct
11 Correct 4 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 10 ms 512 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 18 ms 640 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 16 ms 896 KB Output is correct
12 Correct 17 ms 1024 KB Output is correct
13 Correct 32 ms 1288 KB Output is correct
14 Correct 16 ms 896 KB Output is correct
15 Correct 28 ms 2296 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Incorrect 4 ms 256 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Incorrect 5 ms 384 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Incorrect 5 ms 256 KB Output isn't correct
8 Halted 0 ms 0 KB -