oj.uz

Submission #503383

# Submission time Handle Problem Language Result Execution time Memory
503383 2022-01-07T18:52:04 Z Stickfish Present (RMI21_present) C++17
8 / 100
 4000 ms 296 KB 
#include <iostream>
#include <vector>
#include <bitset>
#include <algorithm>
using namespace std;
using ll = long long;

const int MAXN = 1000;

ll gcd(ll a, ll b) {
    if (!b)
        return a;
    return gcd(b, a % b);
}

ll divcnt[MAXN];
ll isgcdcnt[MAXN];
bitset<MAXN> bs;

bool recur(ll& k, vector<ll>& v) {
    int n = v.size();
    int t0 = v[0];
    for (int i = 1; i <= t0; ++i) {
        divcnt[i] = isgcdcnt[i] = bs[i] = 0;
    }
    for (auto t : v)
        bs[t] = 1;
    bool isok = true;
    for (int t = t0; t >= 1; --t) {
        for (int ti = t; ti <= t0; ti += t) {
            //if (ti % t == 0) {
                divcnt[t] += bs[ti];
                isgcdcnt[t] -= isgcdcnt[ti];
            //}
        }
        isgcdcnt[t] += divcnt[t] * (divcnt[t] - 1);
        if (!bs[t] && isgcdcnt[t] > 0) {
            isok = false;
            break;
        }
    }
    if (isok) {
        if (!k)
            return true;
        --k;
    }
    int x = v.back();
    for (int t = 1; t < x; ++t) {
        v.push_back(t);
        if (recur(k, v))
            return true;
        v.pop_back();
    }
    return false;
}

void solve() {
    ll k;
    cin >> k;
    if (k == 0) {
        cout << 0 << endl;
        return;
    }
    --k;
    vector<ll> ans;
    for (int t = 1;; ++t) {
        ans.push_back(t);
        if (recur(k, ans)) {
            break;
        }
        ans.pop_back();
    }
    cout << ans.size() << ' ';
    reverse(ans.begin(), ans.end());
    for (auto x : ans)
        cout << x << ' ';
    cout << endl;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
}

Compilation message

Main.cpp: In function 'bool recur(ll&, std::vector<long long int>&)':
Main.cpp:21:9: warning: unused variable 'n' [-Wunused-variable]
   21 |     int n = v.size();
      |         ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct

Subtask #2
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Execution timed out 4018 ms 296 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #3
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Execution timed out 4018 ms 296 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Execution timed out 4018 ms 296 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Execution timed out 4018 ms 296 KB Time limit exceeded
8 Halted 0 ms 0 KB -