oj.uz

답안 #577246

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
577246 2022-06-14T10:33:44 Z Ronin13 Zoltan (COCI16_zoltan) C++14
112 / 140
 383 ms 31468 KB 
#include<bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
#define ull unsigned ll
using namespace std;

const ll mod = 1e9 + 7;

map <int, int> mp;
const int NMAX = 2e5 + 1;

pll t[4 * NMAX][2];

pll combine(pll a, pll  b){
    if(a.f == b.f) return {a.f, (a.s + b.s) % mod};
    if(a.f > b.f) return a;
    return b;
}

int n;

void build(int v, int l, int r){
    if(l == r){
        if(l == n + 2) {
            t[v][0].s = 1;
        }
        if(l == 1){
            t[v][1].s = 1;
        }
        return;
    }
    int m = (l + r) / 2;
    build(2 * v, l, m);
    build(2 * v + 1, m + 1, r);
    t[v][0] = combine(t[2 * v][0], t[2 * v + 1][0]);
    t[v][1] = combine(t[2 * v][1], t[2 * v + 1][1]);
}

pll get(int v, int l, int r, int st, int fin, int ind){
    if(l > fin || r < st) return {-1, -1};
    if(l >= st && r <= fin) return t[v][ind];
    int m = (l + r) / 2;
    pll x = get(2 * v, l, m, st, fin, ind);
    pll y = get(2 * v + 1, m + 1, r, st, fin, ind);
    return combine(x, y);
}


void update(int v, int l, int r, int pos, pll val, int ind){
    if(l > pos || r < pos) return;
    if(l == r){
        t[v][ind] = val;
        return;
    }
    int m = (l + r) / 2;
    update(2 * v, l, m, pos, val, ind);
    update(2 * v + 1, m + 1, r, pos, val, ind);
    t[v][ind] = combine(t[2 * v][ind], t[2 * v + 1][ind]);
}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n;
    int a[n + 1];
    pii b[n + 1];
    for(int i = 1; i <= n ; i++){
        cin >> a[i];
        b[i] = {a[i], i};
    }
    sort(b + 1, b + 1 + n);
    for(int i = 1; i <= n; i++){
        mp[b[i].f] = i + 1;
    }
    for(int i = 1; i <= n; i++){
        a[i] = mp[a[i]];
    }
    build(1, 1, n + 2);
    pll ans[n + 1];
    ll mx = 0;
    ll cnt = 0;
    for(int i = n; i >= 1; i--){
        pll x = get(1, 1, n + 2, 1, a[i] - 1, 1);
        pll y = get(1, 1, n + 2, a[i] + 1, n + 2, 0);
        ans[i] = {x.f + y.f + 1, x.s * y.s % mod};
        update(1, 1, n + 2, a[i], {x.f + 1, x.s}, 1);
        update(1, 1, n + 2, a[i], {y.f + 1, y.s}, 0);
        mx = max(mx, ans[i].f);
    }
    for(int i = 1; i <= n; i++){
        if(mx == ans[i].f){
            cnt += ans[i].s;
            cnt %= mod;
        }
    }
    for(int i = 1; i <= n - mx; i++){
        cnt *= 2;
        cnt %= mod;
    }
    cout << mx << ' ' << cnt << "\n";
    return 0;
}

Subtask #1
112.0 / 140.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 312 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 219 ms 28460 KB Output is correct
12 Correct 179 ms 26888 KB Output is correct
13 Correct 159 ms 18088 KB Output is correct
14 Correct 227 ms 26968 KB Output is correct
15 Correct 296 ms 29452 KB Output is correct
16 Correct 376 ms 31468 KB Output is correct
17 Incorrect 270 ms 30180 KB Output isn't correct
18 Incorrect 275 ms 30052 KB Output isn't correct
19 Incorrect 383 ms 29948 KB Output isn't correct
20 Incorrect 281 ms 30052 KB Output isn't correct