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Submission #243532

# Submission time Handle Problem Language Result Execution time Memory
243532 2020-07-01T09:46:36 Z VEGAnn Zoltan (COCI16_zoltan) C++14
140 / 140
 131 ms 5872 KB 
#include <bits/stdc++.h>
//#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 all(x) x.begin(),x.end()
#define sz(x) ((int)x.size())
#define i2 array<int,2>
#define PB push_back
using namespace std;
const int N = 200100;
const int oo = 2e9;
const int md = int(1e9) + 7;
i2 ans, st[2][N];
vector<int> vc;
int n, a[N], po[N];

int mult(int x, int y) { return (1ll * x * y) % md; }

void SUM(int &x, int y){
    x += y;
    if (x >= md)
        x -= md;
}

void upd(i2 &cr, i2 nw){
    if (nw[0] > cr[0])
        cr = nw; else
    if (nw[0] == cr[0]){
        SUM(cr[1], nw[1]);
    }
}

i2 get(int tp, int v){
    i2 res = {0, 0};

    for (; v >= 0; v = (v & (v + 1)) - 1)
        upd(res, st[tp][v]);

    return res;
}

void update(int tp, int v, i2 vl){
    for (; v < sz(vc); v = (v | (v + 1)))
        upd(st[tp][v], vl);
}

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

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    cin >> n;

    for (int i = 0; i < n; i++) {
        cin >> a[i];
        vc.PB(a[i]);
    }

    sort(all(vc));
    vc.resize(unique(all(vc)) - vc.begin());

    for (int i = 0; i < n; i++)
        a[i] = lower_bound(all(vc), a[i]) - vc.begin();

    po[0] = 1;

    for (int i = 1; i <= n; i++)
        po[i] = (po[i - 1] * 2) % md;

    for (int i = n - 1; i >= 0; i--){
        i2 men = get(0, a[i] - 1);
        i2 mex = get(1, sz(vc) - a[i] - 2);

        if (men[0] == 0)
            men[1] = 1;

        if (mex[0] == 0)
            mex[1] = 1;

        int len = men[0] + mex[0] + 1;
        int inv = (n - i) - len;

        i2 cur = {len, mult(po[i + inv], mult(mex[1], men[1]))};

        upd(ans, cur);

        men[0]++;
        mex[0]++;

        update(0, a[i], men);
        update(1, sz(vc) - 1 - a[i], mex);
    }

    cout << ans[0] << " " << ans[1];

    return 0;
}

Subtask #1
140.0 / 140.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 6 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 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 81 ms 4848 KB Output is correct
12 Correct 70 ms 4276 KB Output is correct
13 Correct 63 ms 4080 KB Output is correct
14 Correct 89 ms 4216 KB Output is correct
15 Correct 113 ms 5228 KB Output is correct
16 Correct 131 ms 5872 KB Output is correct
17 Correct 92 ms 5484 KB Output is correct
18 Correct 93 ms 5488 KB Output is correct
19 Correct 90 ms 5488 KB Output is correct
20 Correct 97 ms 5484 KB Output is correct