Submission #582559

#	Time	Username	Problem	Language	Result	Execution time	Memory
582559		drdilyor	곤돌라 (IOI14_gondola)	C++17	25 / 100	38 ms	4920 KiB

gondola

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
#ifdef ONPC
    #include "t_debug.cpp"
#else
    #define debug(...) 42
#endif
#define allit(a) (a).begin(), (a).end()
#define sz(a) ((int) (a).size())
#define cut(s) {cout << s << '\n'; return 0;}
#include "gondola.h"

using namespace std;
using ll = long long;
using vi = vector<int>;
namespace pd = __gnu_pbds;
template<typename K> using ordered_set = pd::tree<K, pd::null_type, less<K>, pd::rb_tree_tag, pd::tree_order_statistics_node_update>;
template<typename... T> using hash_table = pd::gp_hash_table<T...>;

const int INF = 1e9;
const ll INFL = 1e18;
const int N = 250000;
const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
mt19937 rng(RANDOM);

int valid(int n, int* a_) {
    vi a(n);
    for (int i = 0; i < n; i++) a[i] = a_[i];

    set<int> visited;
    for (int i = 0; i < n; i++) {
        if (visited.count(a[i])) return 0;
        visited.insert(a[i]);
    }

    int start = -1;
    for (int i = 0; i < n; i++) {
        if (a[i] <= n) {
            start = i - a[i] + 1;
            if (start < 0) start += n;
            break;
        }
    }
    if (start == -1) return 0;

    rotate(a.begin(), a.begin()+start, a.end());
    for (int i = 0; i < n;  i++) {
        if (a[i] <= n && a[i] != i+1) return 0;
    }

    return 1;
}

int replacement(int n, int a_[], int b[]) {
    vi a(n);
    for (int i = 0; i < n; i++) a[i] = a_[i];

    int mx = 0, mxi = -1;
    for (int i = 0; i < n; i++) {
        if (a[i] > mx) mx =a[i], mxi = i;
    }
    int start = -1;
    for (int i = 0; i < n; i++) {
        if (a[i] <= n) {
            start = i - a[i] + 1;
            if (start < 0) start += n;
            break;
        }
    }
    vi orig(n);
    for (int i = 1, j = start; i <= n; i++, j = (j+1)%n) {
        orig[j] = i;
    }
    memset(b, -1, sizeof(int) * (mx - n + 1));
    for (int i = 0; i < n; i++) {
        if (orig[i] != a[i]) {
            b[a[i]-1] = orig[i];
        }
    }

    int bad = orig[mxi];

    for (int i = n; i < mx; i++) {
        if (b[i-n] == -1) {
            b[i-n] = bad;
            bad = i+1;
        }
    }
    return mx - n;
}

int countReplacement(int n, int inputSeq[]) {
}

Compilation message (stderr)

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:94:1: warning: no return statement in function returning non-void [-Wreturn-type]
   94 | }
      | ^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10