oj.uz

Submission #948846

# Submission time Handle Problem Language Result Execution time Memory
948846 2024-03-18T15:29:15 Z Nhoksocqt1 Permutation (APIO22_perm) C++17
71.2154 / 100
 14 ms 1116 KB 
#include<bits/stdc++.h>
using namespace std;

#define inf 0x3f3f3f3f
#define sz(x) int((x).size())
#define fi first
#define se second
typedef long long ll;
typedef pair<int, int> ii;

template<class X, class Y>
	inline bool maximize(X &x, const Y &y) {return (x < y ? x = y, 1 : 0);}
template<class X, class Y>
	inline bool minimize(X &x, const Y &y) {return (x > y ? x = y, 1 : 0);}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int Random(int l, int r) {
    return uniform_int_distribution<int>(l, r)(rng);
}

const int MAXN = 6003;

vector<int> construct_permutation(ll k) {
    /*if(k <= 90) {
        vector<int> p;
        for (int i = k - 2; i >= 0; --i)
            p.push_back(i);

        return p;
    }*/

    --k;
    vector<int> p;
    for (int i = 64 - __builtin_clzll(k); i > 0; --i) {
        while(k >= (1LL << i) - 1) {
            vector<int> t;
            for (int j = 0; j < i; ++j)
                t.push_back(sz(p) + j);

            for (int it = 0; it < sz(p); ++it)
                t.push_back(p[it]);

            p = t;
            k -= (1LL << i) - 1;
        }
    }

    return p;
}

#ifdef Nhoksocqt1

ll fen[MAXN];
int nTree;

void modify(int i, ll v) {
    for (++i; i <= nTree; i += i & -i)
        fen[i] += v;
}

ll get(int i) {
    ll res(0);
    for (++i; i > 0; i -= i & -i)
        res += fen[i];

    return res;
}

int main(void) {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    #define TASK "perm"
    if(fopen(TASK".inp", "r")) {
        freopen(TASK".inp", "r", stdin);
        freopen(TASK".out", "w", stdout);
    }

    ll k;
    cin >> k;

    vector<int> a = construct_permutation(k);
    cout << "PERM SIZE: " << sz(a) << '\n';
    cout << "ANSWER PERM: ";
    for (int it = 0; it < sz(a); ++it)
        cout << a[it] << ' '; cout << '\n';

    ll res(1);
    nTree = sz(a) + 1;
    for (int it = 0; it < sz(a); ++it) {
        ll way = 1 + get(a[it]);
        modify(a[it], way);
        res += way;
    }

    cout << "NUM WAY: " << res << '\n';

    return 0;
}

#endif // Nhoksocqt1

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 448 KB Output is correct

Subtask #2
61.215384618 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 448 KB Output is correct
3 Partially correct 1 ms 348 KB Partially correct
4 Partially correct 1 ms 348 KB Partially correct
5 Partially correct 4 ms 604 KB Partially correct
6 Partially correct 5 ms 692 KB Partially correct
7 Partially correct 8 ms 856 KB Partially correct
8 Partially correct 14 ms 1116 KB Partially correct
9 Correct 1 ms 348 KB Output is correct
10 Partially correct 12 ms 1116 KB Partially correct
11 Partially correct 10 ms 1112 KB Partially correct
12 Partially correct 8 ms 860 KB Partially correct
13 Partially correct 10 ms 860 KB Partially correct