Submission #976893

#	Time	Username	Problem	Language	Result	Execution time	Memory
976893		zwezdinv	Food Court (JOI21_foodcourt)	C++17	0 / 100	428 ms	52332 KiB

foodcourt

#include<bits/stdc++.h>
using namespace std;

using ll = long long;

const int N = 2.5e5 + 1;

namespace ST {
    ll mn[4 * N], s_mn[4 * N], upd[4 * N], upd_mn[4 * N];
    int cnt[4 * N];

    void apply(int node, ll x) {
        mn[node] += x;
        s_mn[node] += x;
        upd_mn[node] += x;
        upd[node] += x;
    }

    void apply_mn(int node, ll x) {
        upd_mn[node] = max(upd_mn[node], x);
        mn[node] = max(mn[node], upd_mn[node]);
    }

    void push(int node) {
        apply(node << 1, upd[node]);
        apply(node << 1 | 1, upd[node]);
        apply_mn(node << 1, upd_mn[node]);
        apply_mn(node << 1 | 1, upd_mn[node]);
        upd[node] = 0;
        upd_mn[node] = -1e17;
    }

    void pull(int node) {
        mn[node] = min(mn[node << 1], mn[node << 1 | 1]);
        cnt[node] = 0;
        if (mn[node << 1] == mn[node]) cnt[node] += cnt[node << 1];
        if (mn[node << 1 | 1] == mn[node]) cnt[node] += cnt[node << 1 | 1];
        s_mn[node] = 1e17;
        for (auto x : {mn[node << 1], s_mn[node << 1], mn[node << 1 | 1], s_mn[node << 1 | 1]}) {
            if (x != mn[node]) s_mn[node] = min(s_mn[node], x);
        }
    }

    void update(int ql, int qr, int x, int node = 1, int l = 0, int r = N - 1) {
        if (r < ql || qr < l) return;
        if (ql <= l && r <= qr) {
            apply(node, x);
            return;
        }
        push(node);
        int m = (l + r) / 2;
        update(ql, qr, x, node << 1, l, m);
        update(ql, qr, x, node << 1 | 1, m + 1, r);
        pull(node);
    }

    void fix(int node = 1, int l = 0, int r = N - 1) {
        if (mn[node] >= 0) return;
        if (s_mn[node] > 0) {
            apply_mn(node, 0);
            return;
        }
        push(node);
        int m = (l + r) / 2;
        fix(node << 1, l, m);
        fix(node << 1 | 1, m + 1, r);
        pull(node);
    }

    ll get(int k, int node = 1, int l = 0, int r = N - 1) {
        if (l == r) return mn[node];
        push(node);
        int m = (l + r) / 2;
        if (k <= m) return get(k, node << 1, l, m);
        else return get(k, node << 1 | 1, m + 1, r);
    }

    void build(int node = 1, int l = 0, int r = N - 1) {
        if (l == r) {
            mn[node] = 0;
            cnt[node] = 1;
            s_mn[node] = 1e17;
            upd[node] = 0;
            upd_mn[node] = -1e17;
        } else {
            int m = (l + r) / 2;
            build(node << 1, l, m);
            build(node << 1 | 1, m + 1, r);
            pull(node);
        }
    }
}

namespace ST2 {
    int tr[4 * N];

    void update(int k, int x, int node = 1, int l = 0, int r = N - 1) {
        if (l == r) {
            tr[node] += x;
            return;
        }
        int m = (l + r) / 2;
        if (k <= m) update(k, x, node << 1, l, m);
        else update(k, x, node << 1 | 1, m + 1, r);
        tr[node] = tr[node << 1] + tr[node << 1 | 1];
    }

    ll sm;
    int find_(int k, int node = 1, int l = 0, int r = N - 1) {
        if (l > k) return -1;
        if (r <= k) {
            if (tr[node] < sm) {
                sm -= tr[node];
                return -1;
            }
            if (l == r) return l;
        }
        int m = (l + r) / 2;
        int res = find_(k, node << 1 | 1, m + 1, r);
        if (res == -1) return find_(k, node << 1, l, m);
        return res;
    }
    int find(int k, ll sm_) {
        sm = sm_;
        return find_(k);
    }
}

int col[N];
bool to_ans[N];
vector<pair<int, ll>> upd[N], ev[N];
int ans[N];

int main() {
    cin.tie(nullptr)->sync_with_stdio(0);

    ST::build();
    int n, m, q;
    cin >> n >> m >> q;
    for (int i = 0; i < q; ++i) {
        int t;
        cin >> t;
        if (t == 1) {
            int l, r;
            ll b;
            cin >> l >> r >> col[i] >> b;!
            --l, --r;
            ST::update(l, r, b);
            upd[l].emplace_back(i, b);
            upd[r + 1].emplace_back(i, -b);
        } else if (t == 2) {
            int l, r;
            ll k;
            cin >> l >> r >> k;
            --l, --r;
            ST::update(l, r, -k);
            ST::fix();
        } else {
            int a;
            ll b;
            cin >> a >> b;
            --a;
            ev[a].emplace_back(i, ST::get(a) - b + 1);
            to_ans[i] = true;
        }
    }
    for (int i = 0; i < n; ++i) {
        for (auto [id, val] : upd[i]) {
            ST2::update(id, val);
        }
        for (auto [id, val] : ev[i]) {
            if (val <= 0) ans[id] = val;
            else {
                int k = ST2::find(id, val);
                ans[id] = col[k];
            }
        }
    }
    for (int i = 0; i < q; ++i) {
        if (to_ans[i]) {
            cout << ans[i] << '\n';
        }
    }
}

Compilation message (stderr)

foodcourt.cpp: In function 'int main()':
foodcourt.cpp:146:42: warning: value computed is not used [-Wunused-value]
  146 |             cin >> l >> r >> col[i] >> b;!
      |                                          ^
  147 |             --l, --r;
      |             ~~~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 5
• Subtask 3: 0 / 7
• Subtask 4: 0 / 21
• Subtask 5: 0 / 15
• Subtask 6: 0 / 13
• Subtask 7: 0 / 26
• Subtask 8: 0 / 11