oj.uz

답안 #737935

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
737935 2023-05-08T02:40:15 Z resting Fish 2 (JOI22_fish2) C++17
8 / 100
 274 ms 109704 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

const int mx = 1e5 + 5;
const int 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 = lm.rbegin(); t != lm.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, 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, int 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, int 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, int 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;
    }
    int 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<int> 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) {
        int 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, int v) {
    ac4[i] = v; ac3.upd(i, v);
    redo(i);
    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<int>(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() {
    int t = 1;
    // cin >> t;
    while (t--)
        solve();
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 97316 KB Output is correct
2 Correct 44 ms 97344 KB Output is correct
3 Incorrect 41 ms 97316 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 37 ms 97336 KB Output is correct
2 Correct 265 ms 109636 KB Output is correct
3 Correct 253 ms 108360 KB Output is correct
4 Correct 274 ms 109704 KB Output is correct
5 Correct 259 ms 108436 KB Output is correct
6 Correct 235 ms 104296 KB Output is correct
7 Correct 202 ms 102168 KB Output is correct
8 Correct 235 ms 104364 KB Output is correct
9 Correct 203 ms 102156 KB Output is correct
10 Correct 232 ms 103944 KB Output is correct
11 Correct 215 ms 103672 KB Output is correct
12 Correct 202 ms 103756 KB Output is correct
13 Correct 205 ms 103756 KB Output is correct
14 Correct 243 ms 107340 KB Output is correct
15 Correct 235 ms 107084 KB Output is correct

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 97316 KB Output is correct
2 Correct 44 ms 97344 KB Output is correct
3 Incorrect 41 ms 97316 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 37 ms 97336 KB Output is correct
2 Correct 265 ms 109636 KB Output is correct
3 Correct 253 ms 108360 KB Output is correct
4 Correct 274 ms 109704 KB Output is correct
5 Correct 259 ms 108436 KB Output is correct
6 Correct 235 ms 104296 KB Output is correct
7 Correct 202 ms 102168 KB Output is correct
8 Correct 235 ms 104364 KB Output is correct
9 Correct 203 ms 102156 KB Output is correct
10 Correct 232 ms 103944 KB Output is correct
11 Correct 215 ms 103672 KB Output is correct
12 Correct 202 ms 103756 KB Output is correct
13 Correct 205 ms 103756 KB Output is correct
14 Correct 243 ms 107340 KB Output is correct
15 Correct 235 ms 107084 KB Output is correct
16 Incorrect 46 ms 97280 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 37 ms 97336 KB Output is correct
2 Correct 265 ms 109636 KB Output is correct
3 Correct 253 ms 108360 KB Output is correct
4 Correct 274 ms 109704 KB Output is correct
5 Correct 259 ms 108436 KB Output is correct
6 Correct 235 ms 104296 KB Output is correct
7 Correct 202 ms 102168 KB Output is correct
8 Correct 235 ms 104364 KB Output is correct
9 Correct 203 ms 102156 KB Output is correct
10 Correct 232 ms 103944 KB Output is correct
11 Correct 215 ms 103672 KB Output is correct
12 Correct 202 ms 103756 KB Output is correct
13 Correct 205 ms 103756 KB Output is correct
14 Correct 243 ms 107340 KB Output is correct
15 Correct 235 ms 107084 KB Output is correct
16 Incorrect 40 ms 97260 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 97316 KB Output is correct
2 Correct 44 ms 97344 KB Output is correct
3 Incorrect 41 ms 97316 KB Output isn't correct
4 Halted 0 ms 0 KB -