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Submission #960173

# Submission time Handle Problem Language Result Execution time Memory
960173 2024-04-09T19:52:45 Z Nelt Gondola (IOI14_gondola) C++17
90 / 100
 167 ms 262144 KB 
#include "gondola.h"
#include <bits/stdc++.h>
 
#define ll long long
#define endl "\n"
 
using namespace std;
const ll mod = 1e9 + 9;
ll binpow(ll n, ll p)
{
    ll ans = 1;
    n %= mod;
    while (p)
    {
        ans = (p & 1 ? ans * n % mod : ans);
        p >>= 1;
        n = n * n % mod;
    }
    return ans;
}
int valid(int n, int a[])
{
    set<ll> s;
    for (ll i = 0; i < n; i++)
        s.insert(a[i]);
    if (s.size() != n)
        return 0;
    ll st = -1, b[n];
    for (ll i = 0; i < n; i++)
        if (a[i] <= n)
            st = i;
    if (st == -1)
        return 1;
    b[st] = a[st];
    for (ll i = st + 1; i < st + n; i++)
        b[i % n] = b[(i - 1 + n) % n] % n + 1;
    // for (ll i = 0; i < n; i++)
    //     cout << b[i] << " ";
    // cout << endl;
    for (ll i = 0; i < n; i++)
        if (a[i] <= n and a[i] != b[i])
            return 0;
    return 1;
}
 
//----------------------
 
int replacement(int n, int a[], int replacementSeq[])
{
    ll st = -1, b[n];
    for (ll i = 0; i < n; i++)
        if (a[i] <= n)
            st = i;
    if (st == -1)
        iota(b, b + n, 1);
    else
    {
        b[st] = a[st];
        for (ll i = st + 1; i < st + n; i++)
            b[i % n] = b[(i - 1 + n) % n] % n + 1;
    }
    ll ptr = 0, mx = max_element(a, a + n) - a;
    ll ind[a[mx] + 1];
    for (ll i = 0; i <= a[mx]; i++)
        ind[i] = -1;
    for (ll i = 0; i < n; i++)
        ind[a[i]] = i;
    for (ll i = n + 1; i <= a[mx]; i++)
        if (ind[i] != -1)
            replacementSeq[ptr++] = b[ind[i]], b[ind[i]] = i;
        else
            replacementSeq[ptr++] = b[mx], b[mx] = i;
    return ptr;
}
 
//----------------------
 
int countReplacement(int n, int a[])
{
    if (!valid(n, a))
        return 0;
    ll ans = 1, mx = max_element(a, a + n) - a;
    ll ind[a[mx] + 1];
    for (ll i = 0; i <= a[mx]; i++)
        ind[i] = -1;
    for (ll i = 0; i < n; i++)
        ind[a[i]] = i;
    ll b[n];
    for (ll i = 0; i < n; i++)
        b[i] = a[i];
    sort(b, b + n, greater());
    // for (ll i = 0; i < n and b[i] > n; i++)
    //     ans = ans * binpow(i + 1, b[i] - (i + 1 == n ? 0 : b[i + 1]) - 1) % mod;
    ll ptr = 0;
    for (ll i = a[mx] - 1; i > n; i--)
    {
        while (ptr < n and b[ptr] > i)
            ptr++;
        if (ind[i] == -1)
            ans = ans * ptr % mod;
    }
  	if (b[n - 1] > n)
      	ans= ans * n % mod;
    return ans;
 
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:26:18: warning: comparison of integer expressions of different signedness: 'std::set<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   26 |     if (s.size() != n)
      |         ~~~~~~~~~^~~~

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 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

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 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 9 ms 2648 KB Output is correct
7 Correct 19 ms 4188 KB Output is correct
8 Correct 15 ms 5004 KB Output is correct
9 Correct 5 ms 1880 KB Output is correct
10 Correct 19 ms 5804 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 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 1 ms 344 KB Output is correct
6 Correct 9 ms 2760 KB Output is correct
7 Correct 19 ms 4184 KB Output is correct
8 Correct 15 ms 4952 KB Output is correct
9 Correct 5 ms 1884 KB Output is correct
10 Correct 19 ms 5748 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 12 ms 2888 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 26 ms 5980 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 348 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 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 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 1 ms 348 KB Output is correct
6 Correct 1 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 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 8 ms 2216 KB Output is correct
12 Correct 11 ms 2652 KB Output is correct
13 Correct 10 ms 2396 KB Output is correct
14 Correct 12 ms 2392 KB Output is correct
15 Correct 16 ms 3724 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 1 ms 500 KB Output is correct

Subtask #8
15.0 / 15.0

# 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 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 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 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 28 ms 6496 KB Output is correct
10 Correct 22 ms 5472 KB Output is correct
11 Correct 9 ms 3420 KB Output is correct
12 Correct 10 ms 3164 KB Output is correct
13 Correct 4 ms 2396 KB Output is correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 368 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 30 ms 6636 KB Output is correct
10 Correct 22 ms 5212 KB Output is correct
11 Correct 9 ms 3492 KB Output is correct
12 Correct 11 ms 3164 KB Output is correct
13 Correct 5 ms 2396 KB Output is correct
14 Runtime error 167 ms 262144 KB Execution killed with signal 9
15 Halted 0 ms 0 KB -