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Submission #678228

# Submission time Handle Problem Language Result Execution time Memory
678228 2023-01-05T10:24:29 Z stanislavpolyn Diversity (CEOI21_diversity) C++17
22 / 100
 32 ms 5500 KB 
#include <bits/stdc++.h>

#define fr(i, a, b) for (int i = (a); i <= (b); ++i)
#define rf(i, a, b) for (int i = (a); i >= (b); --i)
#define fe(x, y) for (auto& x : y)

#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define mt make_tuple

#define all(x) (x).begin(), (x).end()
#define pw(x) (1LL << (x))
#define sz(x) (int)(x).size()

using namespace std;

mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());

//mt19937_64 rng(228);

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template <typename T>
using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define fbo find_by_order
#define ook order_of_key

template <typename T>
bool umn(T& a, T b) {
    return a > b ? a = b, 1 : 0;
}
template <typename T>
bool umx(T& a, T b) {
    return a < b ? a = b, 1 : 0;
}

using ll = long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template <typename T>
using ve = vector<T>;

const int B = 560;

int calc(ve<int> a) {
    int ans = 0;
    fr (i, 0, sz(a) - 1) {
        set<int> s;
        fr (j, i, sz(a) - 1) {
            s.insert(a[j]);
            ans += sz(s);
        }
    }
    return ans;
}


ll calc2(ve<int> a) {
    int total = 0;
    fe (x, a) total += x;
    ll ans = 0;
    int toLeft = 0;
    ans += 1LL * sz(a) * total * (total + 1) / 2;
    fr (i, 0, sz(a) - 1) {
        int toRight = total - toLeft - a[i];
        ans -= 1LL * toLeft * (toLeft + 1) / 2;
        ans -= 1LL * toRight * (toRight + 1) / 2;
        toLeft += a[i];
    }
    return ans;
}

ll calc3(ve<pii> a) {
    assert(sz(a) <= B);
    int total = 0;
    int gr = 0;
    fe (x, a) {
        total += x.fi * x.se;
        gr += x.se;
    }
    ll ans = 0;

    ans += 1LL * gr * total * (total + 1) / 2;
    int toLeft = 0;
    fe (cur, a) {
        fr (j, 1, cur.se) {
            ans -= 1LL * toLeft * (toLeft + 1) / 2;
            toLeft += cur.fi;
        }
    }
    reverse(all(a));
    toLeft = 0;
    fe (cur, a) {
        fr (j, 1, cur.se) {
            ans -= 1LL * toLeft * (toLeft + 1) / 2;
            toLeft += cur.fi;
        }
    }
    return ans;
}

const int N = 3e5 + 5;

int n, q;
int a[N];

int cnt[N];

int rnd(int l, int r) {
    return rng() % (r - l + 1) + l;
}

ll solve(ve<int> a) {
    fe (x, a) cnt[x] = 0;

    fe (x, a) cnt[x]++;

    ve<pii> order;
    fe (x, a) {
        if (cnt[x]) {
            order.pb({cnt[x], x});
            cnt[x] = 0;
        }
    }
    sort(all(order));
    reverse(all(order));

    {
        ve<pii> st;
        fe (cur, order) {
            if (!sz(st) || cur.fi != st.back().fi) {
                st.pb({cur.fi, 1});
            } else {
                st.back().se++;
            }
        }
        deque<pii> d;
        bool who = 0;
        fe (x, st) {
            if (x.se > 1) {
                d.push_front({x.fi, x.se / 2});
                d.pb({x.fi, x.se / 2});
                x.se %= 2;
            }
            if (x.se) {
                if (who == 0) {
                    if (sz(d) && d.front().fi == x.fi) d.front().se++;
                    else d.push_front({x.fi, 1});
                } else {
                    if (sz(d) && d.back().fi == x.fi) d.back().se++;
                    else d.pb({x.fi, 1});
                }
                who ^= 1;
            }
        }

        ve<pii> v;
        fe (x, d) v.pb(x);

        return calc3(v);
    }
    assert(0);
//
//    deque<int> d;
//    bool who = 0;
//    fe (cur, order) {
//        if (who == 0) d.push_front(cur.fi);
//        else d.pb(cur.fi);
//        who ^= 1;
//    }
//    ve<int> v;
//    int now = 1;
//    fe (x, d) {
//        v.pb(x);
//    }
//    return calc2(v);
}



int main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#else
    ios::sync_with_stdio(0);
    cin.tie(0);
#endif



    cin >> n >> q;

    ve<int> v;
    fr (i, 1, n) {
        cin >> a[i];
        v.pb(a[i]);
    }

    sort(all(v));

    cout << solve(v) << "\n";


//    int mn = 1e9;
//    do {
//        umn(mn, calc(v));
//    } while (next_permutation(all(v)));
//
//    cout << solve(v) << " " << mn << "\n";
//
//    do {
//        if (calc(v) == mn) {
//            cout << "v: ";
//            fe (x, v) cout << x << " ";
//            cout << "\n";
//        }
//    } while (next_permutation(all(v)));


    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 288 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 9 ms 1620 KB Output is correct
5 Correct 17 ms 2824 KB Output is correct
6 Correct 26 ms 3876 KB Output is correct
7 Correct 24 ms 3988 KB Output is correct
8 Correct 26 ms 4032 KB Output is correct
9 Correct 32 ms 3968 KB Output is correct
10 Correct 25 ms 3916 KB Output is correct
11 Correct 25 ms 3984 KB Output is correct
12 Correct 27 ms 3972 KB Output is correct
13 Correct 26 ms 3984 KB Output is correct
14 Correct 25 ms 3936 KB Output is correct
15 Correct 25 ms 4040 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 9 ms 1620 KB Output is correct
5 Correct 17 ms 2824 KB Output is correct
6 Correct 26 ms 3876 KB Output is correct
7 Correct 24 ms 3988 KB Output is correct
8 Correct 26 ms 4032 KB Output is correct
9 Correct 32 ms 3968 KB Output is correct
10 Correct 25 ms 3916 KB Output is correct
11 Correct 25 ms 3984 KB Output is correct
12 Correct 27 ms 3972 KB Output is correct
13 Correct 26 ms 3984 KB Output is correct
14 Correct 25 ms 3936 KB Output is correct
15 Correct 25 ms 4040 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 9 ms 1620 KB Output is correct
20 Correct 18 ms 2768 KB Output is correct
21 Correct 28 ms 3984 KB Output is correct
22 Correct 27 ms 3908 KB Output is correct
23 Correct 27 ms 3896 KB Output is correct
24 Correct 28 ms 3904 KB Output is correct
25 Correct 27 ms 3904 KB Output is correct
26 Correct 28 ms 3872 KB Output is correct
27 Correct 28 ms 3988 KB Output is correct
28 Correct 27 ms 3984 KB Output is correct
29 Correct 29 ms 3960 KB Output is correct
30 Correct 32 ms 4036 KB Output is correct

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 9 ms 1620 KB Output is correct
5 Correct 17 ms 2824 KB Output is correct
6 Correct 26 ms 3876 KB Output is correct
7 Correct 24 ms 3988 KB Output is correct
8 Correct 26 ms 4032 KB Output is correct
9 Correct 32 ms 3968 KB Output is correct
10 Correct 25 ms 3916 KB Output is correct
11 Correct 25 ms 3984 KB Output is correct
12 Correct 27 ms 3972 KB Output is correct
13 Correct 26 ms 3984 KB Output is correct
14 Correct 25 ms 3936 KB Output is correct
15 Correct 25 ms 4040 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 9 ms 1620 KB Output is correct
20 Correct 18 ms 2768 KB Output is correct
21 Correct 28 ms 3984 KB Output is correct
22 Correct 27 ms 3908 KB Output is correct
23 Correct 27 ms 3896 KB Output is correct
24 Correct 28 ms 3904 KB Output is correct
25 Correct 27 ms 3904 KB Output is correct
26 Correct 28 ms 3872 KB Output is correct
27 Correct 28 ms 3988 KB Output is correct
28 Correct 27 ms 3984 KB Output is correct
29 Correct 29 ms 3960 KB Output is correct
30 Correct 32 ms 4036 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 2 ms 468 KB Output is correct
37 Correct 6 ms 984 KB Output is correct
38 Correct 6 ms 1036 KB Output is correct
39 Correct 11 ms 1652 KB Output is correct
40 Runtime error 25 ms 5500 KB Execution killed with signal 6
41 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 9 ms 1620 KB Output is correct
15 Correct 17 ms 2824 KB Output is correct
16 Correct 26 ms 3876 KB Output is correct
17 Correct 24 ms 3988 KB Output is correct
18 Correct 26 ms 4032 KB Output is correct
19 Correct 32 ms 3968 KB Output is correct
20 Correct 25 ms 3916 KB Output is correct
21 Correct 25 ms 3984 KB Output is correct
22 Correct 27 ms 3972 KB Output is correct
23 Correct 26 ms 3984 KB Output is correct
24 Correct 25 ms 3936 KB Output is correct
25 Correct 25 ms 4040 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 9 ms 1620 KB Output is correct
30 Correct 18 ms 2768 KB Output is correct
31 Correct 28 ms 3984 KB Output is correct
32 Correct 27 ms 3908 KB Output is correct
33 Correct 27 ms 3896 KB Output is correct
34 Correct 28 ms 3904 KB Output is correct
35 Correct 27 ms 3904 KB Output is correct
36 Correct 28 ms 3872 KB Output is correct
37 Correct 28 ms 3988 KB Output is correct
38 Correct 27 ms 3984 KB Output is correct
39 Correct 29 ms 3960 KB Output is correct
40 Correct 32 ms 4036 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 0 ms 340 KB Output is correct
44 Correct 1 ms 468 KB Output is correct
45 Correct 1 ms 468 KB Output is correct
46 Correct 2 ms 468 KB Output is correct
47 Correct 6 ms 984 KB Output is correct
48 Correct 6 ms 1036 KB Output is correct
49 Correct 11 ms 1652 KB Output is correct
50 Runtime error 25 ms 5500 KB Execution killed with signal 6
51 Halted 0 ms 0 KB -

Subtask #6
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 9 ms 1620 KB Output is correct
15 Correct 17 ms 2824 KB Output is correct
16 Correct 26 ms 3876 KB Output is correct
17 Correct 24 ms 3988 KB Output is correct
18 Correct 26 ms 4032 KB Output is correct
19 Correct 32 ms 3968 KB Output is correct
20 Correct 25 ms 3916 KB Output is correct
21 Correct 25 ms 3984 KB Output is correct
22 Correct 27 ms 3972 KB Output is correct
23 Correct 26 ms 3984 KB Output is correct
24 Correct 25 ms 3936 KB Output is correct
25 Correct 25 ms 4040 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 9 ms 1620 KB Output is correct
30 Correct 18 ms 2768 KB Output is correct
31 Correct 28 ms 3984 KB Output is correct
32 Correct 27 ms 3908 KB Output is correct
33 Correct 27 ms 3896 KB Output is correct
34 Correct 28 ms 3904 KB Output is correct
35 Correct 27 ms 3904 KB Output is correct
36 Correct 28 ms 3872 KB Output is correct
37 Correct 28 ms 3988 KB Output is correct
38 Correct 27 ms 3984 KB Output is correct
39 Correct 29 ms 3960 KB Output is correct
40 Correct 32 ms 4036 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 0 ms 340 KB Output is correct
44 Correct 1 ms 468 KB Output is correct
45 Correct 1 ms 468 KB Output is correct
46 Correct 2 ms 468 KB Output is correct
47 Correct 6 ms 984 KB Output is correct
48 Correct 6 ms 1036 KB Output is correct
49 Correct 11 ms 1652 KB Output is correct
50 Runtime error 25 ms 5500 KB Execution killed with signal 6
51 Halted 0 ms 0 KB -