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Submission #1034770

# Submission time Handle Problem Language Result Execution time Memory
1034770 2024-07-25T17:46:30 Z ArthuroWich Gondola (IOI14_gondola) C++17
100 / 100
 39 ms 5980 KB 
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
int valid(int n, int gondolaSeq[]) {
    int mi = INT_MAX, ind = -1;
    set<int> c;
    for (int i = 0; i < n; i++) {
        c.insert(gondolaSeq[i]);
        if (mi > gondolaSeq[i]) {
            mi = gondolaSeq[i];
            ind = i;
        }
    }
    if (c.size() < n) {
        return 0;
    }
    if (mi > n) {
        return 1;
    }
    ind -= (mi-1);
    ind += n;
    ind %= n;
    vector<int> a;
    for (int i = ind; i < n; i++) {
        a.push_back(gondolaSeq[i]);
    }
    for (int i = 0; i < ind; i++) {
        a.push_back(gondolaSeq[i]);
    }
    for (int i = 0; i < n; i++) {
        if (a[i] <= n && a[i] != i+1) {
            return 0;
        }
    }
    return 1;
}
int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
    int mi = INT_MAX, ind = -1, ma = 0;
    set<int> c;
    for (int i = 0; i < n; i++) {
        ma = max(ma, gondolaSeq[i]);
        c.insert(gondolaSeq[i]);
        if (mi > gondolaSeq[i]) {
            mi = gondolaSeq[i];
            ind = i;
        }
    }
    vector<pair<int, int>> num;
    if (ma <= n) {
        return 0;
    }
    if (mi > n) {
        for (int i = 0; i < n; i++) {
            num.push_back({gondolaSeq[i], i+1});
        }
        int l = 0;
        sort(num.begin(), num.end());
        l = num.back().first-n;
        for (int i = 0; i < l; i++) {
            replacementSeq[i] = num.back().second;
        }
        for (int i = 0; i < num.size(); i++) {
            replacementSeq[num[i].first-n-1] = num[i].second;
        }
        vector<int> ans(n+1, 0);
        for (int i = 1; i <= n; i++) {
            ans[i] = i;
        }
        for (int i = 0; i < l; i++) {
            int v = replacementSeq[i];
            replacementSeq[i] = ans[replacementSeq[i]];
            ans[v] = n+i+1;
        }
        return l;
    } else {
        ind -= (mi-1);
        ind += n;
        ind %= n;
        vector<int> a;
        for (int i = ind; i < n; i++) {
            a.push_back(gondolaSeq[i]);
        }
        for (int i = 0; i < ind; i++) {
            a.push_back(gondolaSeq[i]);
        }
        for (int i = 0; i < n; i++) {
            if (a[i] > n) {
               num.push_back({a[i], i+1});
            }
        }
        int l = 0;
        sort(num.begin(), num.end());
        l = num.back().first-n;
        for (int i = 0; i < l; i++) {
            replacementSeq[i] = num.back().second;
        }
        for (int i = 0; i < num.size(); i++) {
            replacementSeq[num[i].first-n-1] = num[i].second;
        }
        vector<int> ans(n+1, 0);
        for (int i = 1; i <= n; i++) {
            ans[i] = i;
        }
        for (int i = 0; i < l; i++) {
            int v = replacementSeq[i];
            replacementSeq[i] = ans[replacementSeq[i]];
            ans[v] = n+i+1;
        }
        return l;
    }
}
long long int binexp(long long int a, long long int b, long long int m) {
    long long int r = 1;
    while(b > 0) {
        if (b & 1) {
            b--;
            r *= a;
            r %= m;
        }
        b /= 2;
        a *= a;
        a %= m;
    }
    return r;
}
int countReplacement(int n, int gondolaSeq[]) {
    if (!valid(n, gondolaSeq)) {
        return 0;
    }
    vector<int> num;
    long long int ans = 1, mod = 1000000009;
    bool f = 0;
    for (int i = 0; i < n; i++) {
        if (gondolaSeq[i] > n) {
            num.push_back(gondolaSeq[i]);
        }
    }
    if (num.size() == n) {
        ans = num.size();
    }
    if (num.size() == 0) {
        return ans;
    }
    int v = num.size();
    num.push_back(n);
    sort(num.begin(), num.end());
    for (int i = 1; i < num.size(); i++) {
        ans *= binexp(v, num[i]-num[i-1]-1, mod);
        ans %= mod;
        v--;
    }
    return ans;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:14:18: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   14 |     if (c.size() < n) {
      |         ~~~~~~~~~^~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:62:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |         for (int i = 0; i < num.size(); i++) {
      |                         ~~^~~~~~~~~~~~
gondola.cpp:97:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |         for (int i = 0; i < num.size(); i++) {
      |                         ~~^~~~~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:138:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  138 |     if (num.size() == n) {
      |         ~~~~~~~~~~~^~~~
gondola.cpp:147:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  147 |     for (int i = 1; i < num.size(); i++) {
      |                     ~~^~~~~~~~~~~~
gondola.cpp:132:10: warning: unused variable 'f' [-Wunused-variable]
  132 |     bool f = 0;
      |          ^

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 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct

Subtask #2
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 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 8 ms 2648 KB Output is correct
7 Correct 30 ms 3564 KB Output is correct
8 Correct 13 ms 4568 KB Output is correct
9 Correct 5 ms 1624 KB Output is correct
10 Correct 19 ms 5096 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 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 8 ms 2664 KB Output is correct
7 Correct 29 ms 3780 KB Output is correct
8 Correct 23 ms 4556 KB Output is correct
9 Correct 5 ms 1628 KB Output is correct
10 Correct 18 ms 5084 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 10 ms 2396 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 28 ms 5300 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 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

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 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 0 ms 348 KB Output is correct
9 Correct 0 ms 344 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 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 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 432 KB Output is correct
8 Correct 1 ms 436 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 25 ms 4216 KB Output is correct
12 Correct 16 ms 4956 KB Output is correct
13 Correct 27 ms 2904 KB Output is correct
14 Correct 16 ms 4184 KB Output is correct
15 Correct 15 ms 3088 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 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 600 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 348 KB Output is correct
5 Correct 1 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 504 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 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 1 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 36 ms 4808 KB Output is correct
10 Correct 29 ms 3920 KB Output is correct
11 Correct 10 ms 1628 KB Output is correct
12 Correct 9 ms 1884 KB Output is correct
13 Correct 2 ms 604 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 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 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 25 ms 4668 KB Output is correct
10 Correct 20 ms 3932 KB Output is correct
11 Correct 7 ms 1628 KB Output is correct
12 Correct 10 ms 1964 KB Output is correct
13 Correct 3 ms 628 KB Output is correct
14 Correct 33 ms 4588 KB Output is correct
15 Correct 39 ms 5980 KB Output is correct
16 Correct 8 ms 1372 KB Output is correct
17 Correct 34 ms 4048 KB Output is correct
18 Correct 15 ms 2400 KB Output is correct