Submission #863753

#	Time	Username	Problem	Language	Result	Execution time	Memory
863753		Danilo21	Garden (JOI23_garden)	C++17	30 / 100	3078 ms	58292 KiB

garden

#include <bits/stdc++.h>

#define ll long long
#define ld long double
#define pb push_back
#define fi first
#define se second
#define en '\n'
#define sp ' '
#define tb '\t'
#define ri(n) int n; cin >> n
#define rl(n) ll n; cin >> n
#define rs(s) string s; cin >> s
#define rc(c) char c; cin >> c
#define rv(v) for (auto &x : v) cin >> x
#define pven(v) for (auto x : v) cout << x << en
#define pv(v) for (auto x : v) cout << x << sp; cout << en
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define yes cout << "YES" << en
#define no cout << "NO" << en
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
#define ssort(a, b) if (a < b) swap(a, b)
#define bitcnt(a) (__builtin_popcountll(a))
#define bithigh(a) (63-__builtin_clzll(a))
#define lg bithigh
#define highpow(a) (1LL << (ll)lg(a))

using namespace std;

struct T{

    int n;
    set<array<int, 2> > a, b;

    void Insert(int l, int r){
        a.insert({l, r});
        b.insert({r-l+1, l});
    }

    void Erase(int l, int r){
        a.erase({l, r});
        b.erase({r-l+1, l});
    }

    void Insert(int i){
        int l = i, r = i;
        vector<array<int, 2> > er;
        auto it = a.lower_bound({i, i});
        if (it != a.end() && (*it)[0] == i+1){
            r = (*it)[1];
            er.pb(*it);
        }
        if (it != a.begin()){
            it--;
            if ((*it)[1] == i-1){
                l = (*it)[0];
                er.pb(*it);
            }
        }
        for (auto [l1, r1] : er)
            Erase(l1, r1);
        Insert(l, r);
    }

    int Get() const {
        if (a.empty()) return 0;
        int ans = (*b.rbegin())[0];
        auto x = *a.begin(), y = *a.rbegin();
        if (x[0] == 0 && y[1] == n-1)
            smax(ans, x[1] - x[0] + 1 + y[1] - y[0] + 1);
        return ans;
    }

    T(int s) { n = s; }
};

const ll LINF = 4e18;
const int mxN = 1e6+10, INF = 2e9;
int n, m, d, a[mxN], b[mxN];
vector<int> row[mxN];
set<array<int, 2> > s[2];

void Solve(){

    cin >> n >> m >> d;
    for (int i = 0; i < n; i++){
        cin >> a[i] >> b[i];
        row[b[i]].pb(i);
        s[0].insert({b[i], i});
    }
    for (int i = n; i < n+m; i++){
        cin >> a[i] >> b[i];
        row[b[i]].pb(i);
        s[1].insert({b[i], i});
    }
    int ans = d*d;
    for (int i = 0; i < d; i++){
        vector<int> cnt(d, 0);
        for (int j = 0; j < n+m; j++)
            cnt[a[j]]++;

        vector<vector<int> > J(2*d);
        auto x = *s[0].rbegin();
        for (auto [j, k] : s[1]){
            if (j > x[0])
                J[j].pb(k);
            else
                cnt[a[k]]--;
        }

        T pool(d);
        for (int j = 0; j < d; j++){
            if (cnt[j]) continue;
            int l = j;
            while (j+1 < d && !cnt[j+1]) j++;
            pool.Insert(l, j);
        }

        smin(ans, (x[0]-i+1) * (d - pool.Get()));
        for (int j = x[0]+1; j < i+d; j++){
            if (J[j].empty()) continue;
            for (int k : J[j]){
                cnt[a[k]]--;
                if (!cnt[a[k]])
                    pool.Insert(a[k]);
            }
            smin(ans, (j-i+1) * (d - pool.Get()));
        }

        for (int j : row[i]){
            if (j < n){
                s[0].erase({i, j});
                s[0].insert({i+d, j});
            }
            else{
                s[1].erase({i, j});
                s[1].insert({i+d, j});
            }
        }
    }
    cout << ans << en;
}

int main(){

    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0); cerr.tie(0);
    cout << setprecision(12) << fixed;
    cerr << setprecision(12) << fixed;
    cerr << "Started!" << endl;

    int t = 1;
    //cin >> t;
    while (t--)
        Solve();

    return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 6 / 6
• Subtask 3: 8 / 8
• Subtask 4: 16 / 16
• Subtask 5: 0 / 30
• Subtask 6: 0 / 25