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Submission #856870

# Submission time Handle Problem Language Result Execution time Memory
856870 2023-10-04T18:07:38 Z ntkphong Gondola (IOI14_gondola) C++14
75 / 100
 16 ms 2648 KB 
#include <bits/stdc++.h>
using namespace std;
#include "gondola.h"

int valid(int n, int inputSeq[]) {
    
    int k = 0;
    for(int i = 0; i < n; i ++) {
        if(inputSeq[k] > inputSeq[i]) {
            k = i;
        }        
    }
    
    if(inputSeq[k] <= n) {
        for(int i = 1; i <= n - inputSeq[k]; i ++) {
            int j = (k + i) % n;
            if(inputSeq[j] <= n && inputSeq[j] != inputSeq[k] + i) {
                return 0;
            }
        }
            
        for(int i = 1; i <= inputSeq[k] - 1; i ++) {
            int j = (k - i + n) % n;
            if(inputSeq[j] <= n && inputSeq[j] != inputSeq[k] - i) {
                return 0;
            }
        }
    }
    
    sort(inputSeq, inputSeq + n);
    
    for(int i = 0; i + 1 < n; i ++) {
        if(inputSeq[i] == inputSeq[i + 1]) {
            return 0;
        }
    }
    
    return 1;
}

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

vector<int> bld(int n, int k, int gondolaSeq[]) {
    vector<int> seq;
    seq.push_back(gondolaSeq[k]);
        
    for(int i = 1; i <= n - gondolaSeq[k]; i ++) {
        int j = (k + i) % n;
        seq.push_back(gondolaSeq[j]);
    }
        
    reverse(seq.begin(), seq.end());
        
    for(int i = 1; i <= gondolaSeq[k] - 1; i ++) {
        int j = (k - i + n) % n;
        seq.push_back(gondolaSeq[j]);
    }
        
    reverse(seq.begin(), seq.end());
    return seq;    
}

int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
    int k = 0;
    for(int i = 0; i < n; i ++) {
        if(gondolaSeq[k] > gondolaSeq[i]) {
            k = i;
        }        
    }
    
    int l = 0;
    if(gondolaSeq[k] > n) {
        vector<pair<int, int>> p;
        
        for(int i = 0; i < n; i ++) {
            p.push_back({gondolaSeq[i], i + 1});
        }   
        
        sort(p.begin(), p.end());
        
        int j = n + 1;
        for(int i = 0; i < n; i ++) {
            if(p[i].first > n) { 
                replacementSeq[l ++] = p[i].second;
            }
            
            for(; j < p[i].first; j ++) {
                replacementSeq[l ++] = j;
            }
            
            if(j == p[i].first) j ++ ;
        }
    } else {
        vector<int> seq = bld(n, k, gondolaSeq);
        
        vector<pair<int, int>> p;
        
        for(int i = 0; i < n; i ++) {
            p.push_back({seq[i], i + 1});
        }   
        
        sort(p.begin(), p.end());
        
        int j = n + 1;
        for(int i = 0; i < n; i ++) {
            if(p[i].first > n) { 
                replacementSeq[l ++] = p[i].second;
            }
            
            for(; j < p[i].first; j ++) {
                replacementSeq[l ++] = j;
            }
            
            if(j == p[i].first) j ++ ;
        }
    }
    
    return l; 
}

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

const int mod = 1000000009;

int binpow(int a, int b) {
    if(!b) return 1;
    
    if(b % 2 == 0) {
        int x = binpow(a, b / 2);
        return 1LL * x * x % mod;
    }
    
    return 1LL * binpow(a, b - 1) * a % mod;
}

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

    int k = 0;
    for(int i = 0; i < n; i ++) {
        if(inputSeq[k] > inputSeq[i]) {
            k = i;
        }        
    }

    vector<int> seq;
    
    for(int i = 0; i < n; i ++) {
        if(inputSeq[i] > n) {
            seq.push_back(inputSeq[i]);
        }
    }
    
    sort(seq.begin(), seq.end());
    int curr = n;
    int total = 1;
    
    if(inputSeq[k] > n) {
        for(int i = 0; i < n; i ++) {
            total = 1LL * total * (i + 1) % mod;
        }
    }
    
    for(int i = 0; i < seq.size(); i ++) {
        total = 1LL * total * binpow((seq.size() - i), seq[i] - 1 - curr) % mod;
        curr = seq[i];
    }
    
    return total;
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:164:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  164 |     for(int i = 0; i < seq.size(); i ++) {
      |                    ~~^~~~~~~~~~~~

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 344 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 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 5 ms 592 KB Output is correct
7 Correct 6 ms 604 KB Output is correct
8 Correct 8 ms 604 KB Output is correct
9 Correct 3 ms 348 KB Output is correct
10 Correct 11 ms 604 KB Output is correct

Subtask #3
10.0 / 10.0

# 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 5 ms 348 KB Output is correct
7 Correct 7 ms 720 KB Output is correct
8 Correct 7 ms 604 KB Output is correct
9 Correct 4 ms 348 KB Output is correct
10 Correct 11 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 3 ms 580 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 6 ms 740 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 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 #5
10.0 / 10.0

# 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 344 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 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 500 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 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 8 ms 2648 KB Output is correct
12 Correct 14 ms 2648 KB Output is correct
13 Correct 13 ms 1472 KB Output is correct
14 Correct 10 ms 2648 KB Output is correct
15 Correct 16 ms 2316 KB Output is correct

Subtask #7
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

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 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 0 ms 348 KB Output is correct

Subtask #9
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 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 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 12 ms 1116 KB Output is correct
10 Correct 9 ms 964 KB Output is correct
11 Correct 4 ms 604 KB Output is correct
12 Correct 6 ms 856 KB Output is correct
13 Incorrect 1 ms 348 KB Output isn't correct
14 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 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 1 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 12 ms 1112 KB Output is correct
10 Correct 9 ms 984 KB Output is correct
11 Correct 4 ms 604 KB Output is correct
12 Correct 5 ms 604 KB Output is correct
13 Incorrect 2 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -