Submission #636248

#	Time	Username	Problem	Language	Result	Execution time	Memory
636248		jame0313	Untitled (POI11_rot)	C++17	9 / 100	37 ms	65536 KiB

Main

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using ld = long double;
using pll = pair<ll, ll>;
// and so on
struct bit {
    int* tree;
    int siz;
    vector<int> v;
    void init(int x) {
        for (siz = 1; siz < x; siz <<= 1)
            ;
        tree = new int[siz + 1];
        for (int i = 1; i <= siz; i++) tree[i] = 0;
    }
    void add(int pos, int x) {
        v.push_back(pos);
        while (pos <= siz) {
            tree[pos] += x;
            pos += (pos & -pos);
        }
    }
    int sum(int pos) {
        int ret = 0;
        if(pos<=0) return 0;
        while (pos) {
            ret += tree[pos];
            pos &= (pos - 1);
        }
        return ret;
    }
};
bit st[200001];
int id = 0;
pll sol() {
    ll c, ret = 0;
    cin >> c;
    if (c == 0) {
        auto [sl, a] = sol();
        auto [sr, b] = sol();
        ret += sl + sr;
        if(st[a].v.size() < st[b].v.size()) swap(a, b);
        ll acnt = 0, bcnt = 0;
        int siz = st[a].v.size();
        for(auto x : st[b].v){
            int cnt = st[a].sum(x-1);
            acnt += cnt;
            bcnt += siz - cnt;
        }
        ret += min(acnt, bcnt);
        for(auto x : st[b].v){
            st[a].add(x, 1);
        }
        return {ret, a};

    } else {
        int idx = id++;
        st[idx].init(200000);
        st[idx].add(c, 1);
        return {0, idx};
    }
}
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int N;
    cin >> N;
    auto [ans, idx] = sol();
    cout<<ans;
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 9
• Subtask 8: 0 / 9
• Subtask 9: 0 / 9
• Subtask 10: 0 / 9
• Subtask 11: 0 / 10