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Submission #1033393

# Submission time Handle Problem Language Result Execution time Memory
1033393 2024-07-24T18:00:26 Z raphaelp Zoltan (COCI16_zoltan) C++14
140 / 140
 314 ms 18000 KB 
#include <bits/stdc++.h>
using namespace std;
int MOD = 1000000007;
class SegTree
{
private:
    vector<int> st, count;
    int N;
    int l(int x) { return (x << 1); }
    int r(int x) { return (x << 1) + 1; }
    void update(int L, int R, int a, int val, int c, int x)
    {
        if (L > a || R < a)
            return;
        if (L == a && R == a)
        {
            if (val > st[x])
            {
                st[x] = val;
                count[x] = 0;
            }
            if (val == st[x])
            {
                count[x] += c;
                count[x] = count[x] % MOD;
            }
        }
        else
        {
            int m = (L + R) / 2;
            update(L, m, a, val, c, l(x));
            update(m + 1, R, a, val, c, r(x));
            st[x] = max(st[l(x)], st[r(x)]);
            count[x] = ((st[l(x)] == st[x]) ? count[l(x)] : 0) + ((st[r(x)] == st[x]) ? count[r(x)] : 0);
            count[x] = count[x] % MOD;
        }
    }
    pair<int, int> RSQ(int L, int R, int a, int b, int x)
    {
        if (L > b || R < a)
            return {0, 0};
        if (L >= a && R <= b)
            return {st[x], count[x]};
        int m = (L + R) / 2;
        pair<int, int> temp1 = RSQ(L, m, a, b, l(x)), temp2 = RSQ(m + 1, R, a, b, r(x));
        if (temp1.first < temp2.first)
            swap(temp1, temp2);
        if (temp1.first == temp2.first)
            temp1.second += temp2.second;
        temp1.second = temp1.second % MOD;
        return temp1;
    }

public:
    SegTree(int x)
    {
        N = pow(2, ceil(log2(x)));
        st.assign(2 * N, 0);
        count.assign(2 * N, 0);
    }
    void update(int x, int val, int c) { update(0, N - 1, x, val, c, 1); }
    pair<int, int> RSQ(int a, int b) { return RSQ(0, N - 1, a, b, 1); }
};
int main()
{
    int N;
    cin >> N;
    vector<int> Tab(N), vals(N);
    for (int i = 0; i < N; i++)
    {
        cin >> Tab[i];
        vals[i] = Tab[i];
    }
    sort(vals.begin(), vals.end());
    map<int, int> M;
    int buff = 1;
    for (int i = 0; i < N; i++)
    {
        M[vals[i]] = buff++;
    }
    for (int i = 0; i < N; i++)
        Tab[i] = M[Tab[i]];
    M.clear();
    vals.clear();
    vector<pair<long long, long long>> ansleft(N), ansright(N);
    SegTree STL(N + 1), STR(N + 1);
    long long best = 0;
    for (int i = N - 1; i >= 0; i--)
    {
        ansleft[i] = STL.RSQ(0, Tab[i] - 1);
        ansright[i] = STR.RSQ(Tab[i] + 1, N);
        ansleft[i].first++, ansright[i].first++;
        if (ansleft[i].first == 1)
            ansleft[i].second++;
        if (ansright[i].first == 1)
            ansright[i].second++;
        ansleft[i].second = ansleft[i].second % MOD;
        ansright[i].second = ansright[i].second % MOD;
        STL.update(Tab[i], ansleft[i].first, ansleft[i].second);
        STR.update(Tab[i], ansright[i].first, ansright[i].second);
        best = max(best, ansright[i].first + ansleft[i].first);
    }
    long long tot = 0;
    for (int i = 0; i < N; i++)
    {
        if (ansright[i].first + ansleft[i].first == best)
            tot = (tot + (ansright[i].second * ansleft[i].second)) % MOD;
    }
    for (int i = 0; i < N - best + 1; i++)
    {
        tot = (tot * 2) % MOD;
    }
    cout << best - 1 << ' ' << tot;
}

Subtask #1
140.0 / 140.0

# 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 1 ms 600 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 2 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 197 ms 15188 KB Output is correct
12 Correct 166 ms 14072 KB Output is correct
13 Correct 185 ms 10400 KB Output is correct
14 Correct 206 ms 13908 KB Output is correct
15 Correct 267 ms 16212 KB Output is correct
16 Correct 314 ms 17236 KB Output is correct
17 Correct 249 ms 17876 KB Output is correct
18 Correct 225 ms 18000 KB Output is correct
19 Correct 234 ms 18000 KB Output is correct
20 Correct 240 ms 17876 KB Output is correct