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Submission #921167

# Submission time Handle Problem Language Result Execution time Memory
921167 2024-02-03T11:38:45 Z Macker Gondola (IOI14_gondola) C++17
60 / 100
 16 ms 2260 KB 
#include "gondola.h"
#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
#define all(v) v.begin(), v.end()

ll mod = 1e9+7;

ll power(ll n, ll k){
    ll res = 1;
    n %= mod;
    while(k > 0){
        if(k & 1) res = (res * n) % mod;
        n = (n * n) % mod;
        k /= 2;
    }
    return res;
}

int valid(int n, int inputSeq[])
{
    return countReplacement(n, inputSeq) != 0;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    vector<pair<int, int>> v(n);
    for (int i = 0; i < n; i++) {
        v[i] = {gondolaSeq[i], i};
    }
    sort(all(v));

    ll strt = -1;
    for (auto &i : v) {
        if(i.first <= n){
            strt = (i.second - i.first + 1 + n) % n;
            break;
        }
    }
    if(strt == -1) strt = 0;
    for (int i = 0; i < n; i++) {
        gondolaSeq[i] = (i - strt + n) % n + 1;
    }
    
    
    int ls = n;
    int j = 0;
    for (auto &i : v) {
        while(ls < i.first){
            replacementSeq[j++] = gondolaSeq[i.second];
            ls++;
            gondolaSeq[i.second] = ls;
        }
    }
    return j;
}

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

int countReplacement(int n, int inputSeq[])
{
    vector<pair<int, int>> v(n);
    for (int i = 0; i < n; i++) {
        v[i] = {inputSeq[i], i};
    }
    sort(all(v));
    for (int i = 1; i < v.size(); i++) {
        if(v[i].first == v[i - 1].first) return 0;
    }
    
    ll strt = -1;
    ll fin = 0;
    bool m = true;
    ll res = 1;
    for (int j = 0; j < v.size(); j++) {
        auto i = v[j];
        if(i.first <= n){
            if(strt == -1){
                strt = (i.second - i.first + 1 + n) % n;
            }
            else{
                if((i.second - i.first + 1 + n) % n != strt) return 0;
            }
            m = false;
        }
        else{
            ll ls;
            if(j == 0 || v[j - 1].first <= n){
                ls = n;
            }
            else ls = v[j - 1].first;
            res = (res * power(n - fin, i.first - ls - 1)) % mod;
        }
        fin++;
    }
    if(m) res = (res * n) % mod;
    return res;
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:70:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |     for (int i = 1; i < v.size(); i++) {
      |                     ~~^~~~~~~~~~
gondola.cpp:78:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |     for (int j = 0; j < v.size(); j++) {
      |                     ~~^~~~~~~~~~

Subtask #1
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 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 1 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 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 964 KB Output is correct
7 Correct 12 ms 1880 KB Output is correct
8 Correct 10 ms 1628 KB Output is correct
9 Correct 4 ms 604 KB Output is correct
10 Correct 12 ms 1880 KB Output is correct

Subtask #3
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 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 5 ms 860 KB Output is correct
7 Correct 12 ms 1748 KB Output is correct
8 Correct 8 ms 1628 KB Output is correct
9 Correct 4 ms 604 KB Output is correct
10 Correct 12 ms 1884 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 5 ms 860 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 12 ms 1908 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 532 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 #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 448 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 344 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 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 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 444 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 11 ms 1628 KB Output is correct
12 Correct 11 ms 1884 KB Output is correct
13 Correct 11 ms 1352 KB Output is correct
14 Correct 8 ms 1628 KB Output is correct
15 Correct 16 ms 2260 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 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 344 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 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 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Incorrect 1 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 1 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 444 KB Output is correct
5 Correct 1 ms 352 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 1 ms 344 KB Output isn't correct
8 Halted 0 ms 0 KB -