oj.uz

답안 #243967

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
243967 2020-07-02T12:11:09 Z Vimmer Zoltan (COCI16_zoltan) C++14
140 / 140
 139 ms 16108 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 300101
#define M ll(1e9 + 7)
#define inf 1e9 + 1e9

using namespace std;
//using namespace __gnu_pbds;

typedef long double ld;
typedef long long ll;
typedef short int si;
typedef pair <int, int> par;
typedef array <int, 2> a2;

//typedef tree <int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;


ll a[N], n;

pair <ll, ll> fl[N], fr[N], L[N], R[N];


void upd(pair <ll, ll> &a, pair <ll, ll> &b) {if (a.F == b.F) a.S = (a.S + b.S) % M; else if (a.F < b.F) a = b;}

void updr(ll x, pair <ll, ll> val)
{
    x += 5;

    for (; x > 0; x = (x & (x + 1)) - 1) upd(fr[x], val);
}

void updl(ll x, pair <ll, ll> val)
{
    x += 5;

    for (; x < N; x = (x | (x + 1))) upd(fl[x], val);
}

pair <ll, ll> gtl(ll x)
{
    x += 5;

    pair <ll, ll> ans = {-1, -1};

    for (; x > 0; x = (x & (x + 1)) - 1) upd(ans, fl[x]);

    return ans;
}

pair <ll, ll> gtr(ll x)
{
    x += 5;

    pair <ll, ll> ans = {-1, -1};

    for (; x < N; x = (x | (x + 1))) upd(ans, fr[x]);

    return ans;
}


ll binpow(ll a, ll b)
{
    if (b == 0) return 1;

    ll s = binpow(a, b / 2);

    s = (ll(s) * ll(s)) % M;

    if (b % 2) s = (ll(s) * ll(a)) % M;

    return s;
}

int main()
{
    //freopen("input.txt", "r", stdin); //freopen("output4.txt", "w", stdout);

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> n;

    vector <ll> pr; pr.clear();

    for (ll i = 0; i < n; i++) {cin >> a[i]; pr.pb(a[i]);}

    sort(pr.begin(), pr.end());

    pr.resize(unique(pr.begin(), pr.end()) - pr.begin());

    for (ll i = 0; i < n; i++) {a[i] = lower_bound(pr.begin(), pr.end(), a[i]) - pr.begin();}

    for (ll i = n - 1; i >= 0; i--)
    {
        ll v = a[i];

        pair <ll, ll> valer = gtl(v - 1);

        if (valer.F == 0) valer.S = 1;

        L[i] = valer;

        valer.F++;

        updl(v, valer);
    }

    for (ll i = n - 1; i >= 0; i--)
    {
        ll v = a[i];

        pair <ll, ll> valer = gtr(v + 1);

        if (valer.F == 0) valer.S = 1;

        R[i] = valer;

        valer.F++;

        updr(v, valer);
    }

    pair <ll, ll> ans = {-1, -1};

    for (ll i = 0; i < n; i++)
    {
        int v = i;

        ll len = L[v].F + R[v].F + 1;

        ll val = (ll(L[v].S) * ll(R[v].S)) % M;

        pair <ll, ll> pre = {len, val};

        upd(ans, pre);
    }

    cout << ans.F << " " << (ll(ans.S) * ll(binpow(2, n - ans.F))) % M << endl;
}

Subtask #1
140.0 / 140.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 80 ms 12904 KB Output is correct
12 Correct 67 ms 11240 KB Output is correct
13 Correct 65 ms 10608 KB Output is correct
14 Correct 91 ms 11244 KB Output is correct
15 Correct 118 ms 13928 KB Output is correct
16 Correct 139 ms 16108 KB Output is correct
17 Correct 95 ms 15208 KB Output is correct
18 Correct 105 ms 15228 KB Output is correct
19 Correct 95 ms 15208 KB Output is correct
20 Correct 98 ms 15336 KB Output is correct