oj.uz

Submission #856824

# Submission time Handle Problem Language Result Execution time Memory
856824 2023-10-04T16:49:54 Z ntkphong Gondola (IOI14_gondola) C++14
35 / 100
 12 ms 1880 KB 
#include <bits/stdc++.h>
using namespace std;
#include "gondola.h"
 
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 valid(int n, int inputSeq[]) {
    int max_value = *max_element(inputSeq, inputSeq + n);
    vector<int> arr;
    int total = 0;
    
    for(int i = 0; i < n; i ++) {
        if(inputSeq[i] <= n) {
            arr.push_back(i);
        }
    }
    
    for(int i = 0; i + 1 < arr.size(); i ++) {
        if(inputSeq[arr[i]] > inputSeq[arr[i + 1]]) {
            total ++ ;
        }
    }
    
    sort(inputSeq, inputSeq + n);
    
    for(int i = 0; i + 1 < n; i ++) {
        if(inputSeq[i] == inputSeq[i + 1]) {
            return 0;
        }
    }
    
    return total < 2;
}
 
//----------------------
 
struct DSU {    
    vector<int> par;
    
    void init(int n) {
        par.resize(n + 10);
        for(int i = 1; i <= n; i ++) par[i] = i;
    }
    
    int get_root(int x) {
        return par[x] == x ? x : par[x] = get_root(par[x]);
    }
    
    void unite(int u, int v) {
        u = get_root(u);
        v = get_root(v);
        
        if(u == v) return ;
        par[v] = u;
    }
};
 
int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
    int max_value = *max_element(gondolaSeq, gondolaSeq + n);
    
    DSU F;
    F.init(max_value + 1);
    
    int k = 0;
    for(int i = 0; i < n; i ++) {
        if(gondolaSeq[k] > gondolaSeq[i]) {
            k = i;
        }        
    }
    
    for(int i = 0; i < n; i ++) {
        F.unite(gondolaSeq[i] + 1, gondolaSeq[i]);        
    }
        
    int l = 0;
    if(gondolaSeq[k] > n) {
        for(int i = 0; i < n; i ++) {
            for(int j = i + 1; j < gondolaSeq[i]; j = F.get_root(j)) {
                replacementSeq[l ++] = j; 
                F.unite(j + 1, j);
            }
        }
    } else {
        vector<int> seq = bld(n, k, gondolaSeq);
        
        for(int i = 0; i < n; i ++) {
            for(int j = i + 1; j < seq[i]; j = F.get_root(j)) {
                replacementSeq[l ++] = j; 
                F.unite(j + 1, 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 ++) {
        if(seq[i] > curr + 1)
            total = 1LL * total * binpow((seq.size() - i), seq[i] - 1 - curr) % mod;
        
        curr = seq[i];
    }
    
    return total;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:36:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i = 0; i + 1 < arr.size(); i ++) {
      |                    ~~~~~~^~~~~~~~~~~~
gondola.cpp:26:9: warning: unused variable 'max_value' [-Wunused-variable]
   26 |     int max_value = *max_element(inputSeq, inputSeq + n);
      |         ^~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:158:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  158 |     for(int i = 0; i < seq.size(); i ++) {
      |                    ~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 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 5 ms 1112 KB Output is correct
7 Correct 11 ms 1760 KB Output is correct
8 Correct 7 ms 1752 KB Output is correct
9 Correct 3 ms 824 KB Output is correct
10 Correct 11 ms 1752 KB Output is correct

Subtask #3
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 600 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 1368 KB Output is correct
7 Correct 11 ms 1848 KB Output is correct
8 Correct 7 ms 1752 KB Output is correct
9 Correct 3 ms 860 KB Output is correct
10 Correct 11 ms 1880 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Incorrect 0 ms 348 KB Output isn't correct
13 Halted 0 ms 0 KB -

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 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 #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 360 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 344 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 #6
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 448 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 #7
5.0 / 5.0

# 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

Subtask #8
15.0 / 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 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 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 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 11 ms 1496 KB Output is correct
10 Correct 10 ms 1300 KB Output is correct
11 Correct 4 ms 860 KB Output is correct
12 Correct 5 ms 860 KB Output is correct
13 Incorrect 1 ms 344 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 604 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 1496 KB Output is correct
10 Correct 9 ms 1300 KB Output is correct
11 Correct 4 ms 860 KB Output is correct
12 Correct 5 ms 920 KB Output is correct
13 Incorrect 1 ms 348 KB Output isn't correct
14 Halted 0 ms 0 KB -