oj.uz

Submission #737946

# Submission time Handle Problem Language Result Execution time Memory
737946 2023-05-08T02:53:04 Z resting Fish 2 (JOI22_fish2) C++17
8 / 100
 224 ms 90828 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long

const int mx = 1e5 + 5;
const ll inf = 1e15;

vector<pair<int, int>> res;
struct segtree {
    int l, r, v, m;
    segtree* lc, * rc;
    segtree* getmem();
    set<pair<int, int>> lm, rm;
    segtree() : segtree(-1, -1) {};
    segtree(int l, int r) : l(l), r(r) {
        m = (l + r) / 2;
        if (l == r)return;
        lc = getmem(); *lc = segtree(l, m);
        rc = getmem(); *rc = segtree(m + 1, r);
    }
    void del(int ql, int qr) {
        if (qr < m) { lc->del(ql, qr); return; }
        if (ql > m) { rc->del(ql, qr); return; }
        lm.erase({ ql, qr });
        rm.erase({ qr, ql });
    }
    void add(int ql, int qr) {
        if (qr < m) { lc->add(ql, qr); return; }
        if (ql > m) { rc->add(ql, qr); return; }
        lm.insert({ ql, qr });
        rm.insert({ qr, ql });
    }
    void q(int qi) {
        if (l == r)return;
        if (qi <= m)lc->q(qi);
        else rc->q(qi);
        if (qi <= m) {
            for (auto t = lm.begin(); t != lm.end() && t->first <= qi; t++)
                res.push_back(*t);
        } else {
            for (auto t = rm.rbegin(); t != rm.rend() && t->first >= qi; t++)
                res.push_back({ t->second, t->first });
        }
    }
};
segtree mem[mx * 4];
int memsz = 0;
segtree* segtree::getmem() { return &mem[memsz++]; }

struct segtree2 {
    int l, r, cnt1 = 0, cnt2 = 0, lz = 0;
    segtree2* lc, * rc;
    segtree2* getmem();
    segtree2() : segtree2(-1, -1) {};
    segtree2(int l, int r) : l(l), r(r) {
        if (l == r)return;
        int m = (l + r) / 2;
        lc = getmem(); *lc = segtree2(l, m);
        rc = getmem(); *rc = segtree2(m + 1, r);
    }
    void fix() {
        if (l == r) {
            cnt1 = cnt2 = 0;
            if (lz == 1) cnt1 = 1;
            if (lz > 1) cnt2 = 1;
            return;
        }
        if (lz == 0) {
            cnt1 = lc->cnt1 + rc->cnt1;
            cnt2 = lc->cnt2 + rc->cnt2;
        } else if (lz == 1) {
            cnt2 = lc->cnt1 + rc->cnt1 + lc->cnt2 + rc->cnt2;
            cnt1 = (r - l + 1) - cnt2;
        } else {
            cnt1 = 0;
            cnt2 = (r - l + 1);
        }
    }
    void upd(int ql, int qr, int qv) {
        if (l > qr || r < ql) return;
        if (l >= ql && r <= qr) {
            lz += qv; fix();
            return;
        }
        lc->upd(ql, qr, qv);
        rc->upd(ql, qr, qv);
        fix();
    }
    int q(int ql, int qr, int qlz = 0) {
        if (l > qr || r < ql) return 0;
        lz += qlz; fix();
        int res = 0;
        if (l >= ql && r <= qr) {
            res = cnt2;
        } else {
            res = lc->q(ql, qr, lz) + rc->q(ql, qr, lz);
        }
        lz -= qlz; fix();
        return res;
    }
};
segtree2 mem2[mx * 4];
int memsz2 = 0;
segtree2* segtree2::getmem() { return &mem2[memsz2++]; }

struct segtree3 {
    int l, r; ll mx = 0, sm = 0;
    segtree3* lc, * rc;
    segtree3* getmem();
    segtree3() : segtree3(-1, -1) {};
    segtree3(int l, int r) : l(l), r(r) {
        if (l == r)return;
        int m = (l + r) / 2;
        lc = getmem(); *lc = segtree3(l, m);
        rc = getmem(); *rc = segtree3(m + 1, r);
    }
    void fix() {
        if (l == r) return;
        mx = max(lc->mx, rc->mx);
        sm = lc->sm + rc->sm;
    }
    void upd(int qi, ll qv) {
        if (l > qi || r < qi) return;
        if (l == r) {
            mx = qv; sm = qv;return;
        }
        lc->upd(qi, qv); rc->upd(qi, qv);
        fix();
    }
    int walkl(int ql, ll qv) {
        if (r < ql) return -1;
        if (mx <= qv) return -1;
        if (l == r) return l;
        int v = lc->walkl(ql, qv);
        return v == -1 ? rc->walkl(ql, qv) : v;
    }
    int walkr(int qr, ll qv) {
        if (l > qr) return -1;
        if (mx <= qv) return -1;
        if (l == r) return l;
        int v = rc->walkr(qr, qv);
        return v == -1 ? lc->walkr(qr, qv) : v;
    }
    ll qsum(int ql, int qr) {
        if (l > qr || r < ql) return 0;
        if (l >= ql && r <= qr) return sm;
        return lc->qsum(ql, qr) + rc->qsum(ql, qr);
    }
};
segtree3 mem3[mx * 4];
int memsz3 = 0;
segtree3* segtree3::getmem() { return &mem3[memsz++]; }


segtree ac; segtree2 ac2; segtree3 ac3; vector<ll> ac4;
int n;
void redo(int i) {
    //cout << "REDO " << i << endl;
    res.clear(); ac.q(i);
    for (auto& x : res) {
        auto [l, r] = x;
        //cout << "DEL " << l << " " << r << endl;
        ac.del(l, r);
        ac2.upd(l, r, -1);
    }
    //walking time
    int l = i, r = i;
    while (1) {
        ll t = ac3.qsum(l, r);
        int wr = ac3.walkl(r + 1, t);
        int wl = ac3.walkr(l - 1, t);
        //cout << l << "," << r << "," << wl << "," << wr << endl;
        if (wl == -1 || wr == -1) break;
        t = ac3.qsum(wl + 1, wr - 1);
        if (ac4[wl] > t && ac4[wr] > t) {
            //cout << "ADD " << wl + 1 << " " << wr - 1 << " " << t << " " << ac4[wl] << " " << ac4[wr] << endl;
            ac.add(wl + 1, wr - 1);
            ac2.upd(wl + 1, wr - 1, 1);
        }
        l = wl + 1, r = wr - 1;
        if (ac4[wl] > ac4[wr]) r++;
        else l--;
    }
}

void upd(int i, ll v) {
    if (ac4[i] > v) {
        ac4[i] = v; ac3.upd(i, v);
        redo(i);
    } else {
        ac4[i] = v; ac3.upd(i, v);
        res.clear(); ac.q(i);
        for (auto& x : res) {
            auto [l, r] = x;
            //cout << "DEL " << l << " " << r << endl;
            ac.del(l, r);
            ac2.upd(l, r, -1);
        }
        if (i < n + 1)redo(i + 1);
        if (i)redo(i - 1);
    }
}

void solve() {
    cin >> n;
    vector<int> a(n + 1, 0); for (int i = 1; i <= n; i++) cin >> a[i];
    ac = segtree(0, n + 1); ac2 = segtree2(0, n + 1); ac3 = segtree3(0, n + 1); ac4 = vector<ll>(n + 2, 0);
    for (int i = 0; i <= n + 1; i++) upd(i, a[i]);
    int q; cin >> q;
    while (q--) {
        int t; cin >> t;
        if (t == 1) {
            int x, y; cin >> x >> y; a[x] = y;
            upd(x, y);
        } else {
            int l, r; cin >> l >> r;
            upd(l - 1, inf); upd(r + 1, inf);
            cout << (r - l + 1 - ac2.q(l, r)) << endl;
            upd(l - 1, a[l - 1]); upd(r + 1, a[r + 1]);
        }
    }
}

int32_t main() {
    cin.tie(0)->sync_with_stdio(0);
    int t = 1;
    // cin >> t;
    while (t--)
        solve();
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 81620 KB Output is correct
2 Correct 35 ms 81704 KB Output is correct
3 Incorrect 34 ms 81660 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 81732 KB Output is correct
2 Correct 224 ms 90828 KB Output is correct
3 Correct 204 ms 89936 KB Output is correct
4 Correct 211 ms 90828 KB Output is correct
5 Correct 208 ms 90032 KB Output is correct
6 Correct 181 ms 86940 KB Output is correct
7 Correct 168 ms 85324 KB Output is correct
8 Correct 175 ms 86996 KB Output is correct
9 Correct 166 ms 85324 KB Output is correct
10 Correct 189 ms 86604 KB Output is correct
11 Correct 178 ms 86352 KB Output is correct
12 Correct 169 ms 86468 KB Output is correct
13 Correct 177 ms 86468 KB Output is correct
14 Correct 200 ms 89260 KB Output is correct
15 Correct 191 ms 89108 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 81620 KB Output is correct
2 Correct 35 ms 81704 KB Output is correct
3 Incorrect 34 ms 81660 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 81732 KB Output is correct
2 Correct 224 ms 90828 KB Output is correct
3 Correct 204 ms 89936 KB Output is correct
4 Correct 211 ms 90828 KB Output is correct
5 Correct 208 ms 90032 KB Output is correct
6 Correct 181 ms 86940 KB Output is correct
7 Correct 168 ms 85324 KB Output is correct
8 Correct 175 ms 86996 KB Output is correct
9 Correct 166 ms 85324 KB Output is correct
10 Correct 189 ms 86604 KB Output is correct
11 Correct 178 ms 86352 KB Output is correct
12 Correct 169 ms 86468 KB Output is correct
13 Correct 177 ms 86468 KB Output is correct
14 Correct 200 ms 89260 KB Output is correct
15 Correct 191 ms 89108 KB Output is correct
16 Incorrect 38 ms 81644 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 81732 KB Output is correct
2 Correct 224 ms 90828 KB Output is correct
3 Correct 204 ms 89936 KB Output is correct
4 Correct 211 ms 90828 KB Output is correct
5 Correct 208 ms 90032 KB Output is correct
6 Correct 181 ms 86940 KB Output is correct
7 Correct 168 ms 85324 KB Output is correct
8 Correct 175 ms 86996 KB Output is correct
9 Correct 166 ms 85324 KB Output is correct
10 Correct 189 ms 86604 KB Output is correct
11 Correct 178 ms 86352 KB Output is correct
12 Correct 169 ms 86468 KB Output is correct
13 Correct 177 ms 86468 KB Output is correct
14 Correct 200 ms 89260 KB Output is correct
15 Correct 191 ms 89108 KB Output is correct
16 Incorrect 34 ms 81696 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 81620 KB Output is correct
2 Correct 35 ms 81704 KB Output is correct
3 Incorrect 34 ms 81660 KB Output isn't correct
4 Halted 0 ms 0 KB -