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답안 #737965

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
737965 2023-05-08T03:16:14 Z resting Fish 2 (JOI22_fish2) C++17
60 / 100
 4000 ms 71424 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();
    vector<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(find(lm.begin(), lm.end(), pair<int, int>(ql, qr)));
        rm.erase(find(rm.begin(), rm.end(), pair<int, int>(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.push_back({ ql, qr });
        rm.push_back({ qr, ql });
    }
    void q(int qi) {
        if (l == r)return;
        if (qi <= m)lc->q(qi);
        else rc->q(qi);
        sort(lm.begin(), lm.end());
        sort(rm.begin(), rm.end());
        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 clear(int i) {
    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);
    }
}

void redo(int i, bool extendleft, bool extendright) {
    //cout << "REDO " << i << endl;
    //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);
        if (wl < i - 1 && !extendleft) break;
        if (wr > i + 1 && !extendright) break;
        //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]) {
            if (!extendright) break;
            r++;
        } else {
            if (!extendleft) break;
            l--;
        }
    }
}

void upd(int i, ll v, bool left, bool right) {
    ac4[i] = v; ac3.upd(i, v);
    clear(i);
    if (i < n + 1 && right)clear(i + 1);
    if (i && left)clear(i - 1);

    redo(i, 1, 1);
    if (i < n + 1 && right)redo(i + 1, 0, 1);
    if (i && left)redo(i - 1, 1, 0);
}

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], 1, 0);
    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, 1, 1);
        } else {
            int l, r; cin >> l >> r;
            upd(l - 1, inf, 0, 1); upd(r + 1, inf, 1, 0);
            cout << (r - l + 1 - ac2.q(l, r)) << endl;
            upd(l - 1, a[l - 1], 0, 1); upd(r + 1, a[r + 1], 1, 0);
        }
    }
}

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

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 62924 KB Output is correct
2 Correct 31 ms 62952 KB Output is correct
3 Correct 29 ms 62820 KB Output is correct
4 Correct 30 ms 62860 KB Output is correct
5 Correct 37 ms 62900 KB Output is correct
6 Correct 42 ms 62860 KB Output is correct
7 Correct 35 ms 62876 KB Output is correct
8 Correct 47 ms 62968 KB Output is correct
9 Correct 49 ms 62960 KB Output is correct
10 Correct 34 ms 62888 KB Output is correct
11 Correct 39 ms 62900 KB Output is correct
12 Correct 35 ms 62972 KB Output is correct
13 Correct 46 ms 62932 KB Output is correct
14 Correct 34 ms 62924 KB Output is correct
15 Correct 39 ms 62968 KB Output is correct
16 Correct 38 ms 62940 KB Output is correct
17 Correct 37 ms 62944 KB Output is correct
18 Correct 38 ms 62944 KB Output is correct
19 Correct 35 ms 62924 KB Output is correct
20 Correct 36 ms 62988 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 62892 KB Output is correct
2 Correct 326 ms 66944 KB Output is correct
3 Correct 332 ms 66808 KB Output is correct
4 Correct 345 ms 66952 KB Output is correct
5 Correct 326 ms 66804 KB Output is correct
6 Correct 178 ms 67380 KB Output is correct
7 Correct 181 ms 65740 KB Output is correct
8 Correct 170 ms 67392 KB Output is correct
9 Correct 164 ms 65764 KB Output is correct
10 Correct 229 ms 65704 KB Output is correct
11 Correct 235 ms 65816 KB Output is correct
12 Correct 179 ms 66564 KB Output is correct
13 Correct 159 ms 66508 KB Output is correct
14 Correct 204 ms 68112 KB Output is correct
15 Correct 199 ms 67732 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 62924 KB Output is correct
2 Correct 31 ms 62952 KB Output is correct
3 Correct 29 ms 62820 KB Output is correct
4 Correct 30 ms 62860 KB Output is correct
5 Correct 37 ms 62900 KB Output is correct
6 Correct 42 ms 62860 KB Output is correct
7 Correct 35 ms 62876 KB Output is correct
8 Correct 47 ms 62968 KB Output is correct
9 Correct 49 ms 62960 KB Output is correct
10 Correct 34 ms 62888 KB Output is correct
11 Correct 39 ms 62900 KB Output is correct
12 Correct 35 ms 62972 KB Output is correct
13 Correct 46 ms 62932 KB Output is correct
14 Correct 34 ms 62924 KB Output is correct
15 Correct 39 ms 62968 KB Output is correct
16 Correct 38 ms 62940 KB Output is correct
17 Correct 37 ms 62944 KB Output is correct
18 Correct 38 ms 62944 KB Output is correct
19 Correct 35 ms 62924 KB Output is correct
20 Correct 36 ms 62988 KB Output is correct
21 Correct 32 ms 62892 KB Output is correct
22 Correct 326 ms 66944 KB Output is correct
23 Correct 332 ms 66808 KB Output is correct
24 Correct 345 ms 66952 KB Output is correct
25 Correct 326 ms 66804 KB Output is correct
26 Correct 178 ms 67380 KB Output is correct
27 Correct 181 ms 65740 KB Output is correct
28 Correct 170 ms 67392 KB Output is correct
29 Correct 164 ms 65764 KB Output is correct
30 Correct 229 ms 65704 KB Output is correct
31 Correct 235 ms 65816 KB Output is correct
32 Correct 179 ms 66564 KB Output is correct
33 Correct 159 ms 66508 KB Output is correct
34 Correct 204 ms 68112 KB Output is correct
35 Correct 199 ms 67732 KB Output is correct
36 Correct 416 ms 67304 KB Output is correct
37 Correct 377 ms 66968 KB Output is correct
38 Correct 360 ms 66720 KB Output is correct
39 Correct 363 ms 67288 KB Output is correct
40 Correct 376 ms 66808 KB Output is correct
41 Correct 230 ms 67420 KB Output is correct
42 Correct 183 ms 67348 KB Output is correct
43 Correct 241 ms 65868 KB Output is correct
44 Correct 211 ms 65756 KB Output is correct
45 Correct 310 ms 66124 KB Output is correct
46 Correct 273 ms 65984 KB Output is correct
47 Correct 243 ms 65384 KB Output is correct
48 Correct 192 ms 66524 KB Output is correct
49 Correct 191 ms 66748 KB Output is correct
50 Correct 221 ms 68300 KB Output is correct
51 Correct 209 ms 67812 KB Output is correct
52 Correct 219 ms 68268 KB Output is correct

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 62892 KB Output is correct
2 Correct 326 ms 66944 KB Output is correct
3 Correct 332 ms 66808 KB Output is correct
4 Correct 345 ms 66952 KB Output is correct
5 Correct 326 ms 66804 KB Output is correct
6 Correct 178 ms 67380 KB Output is correct
7 Correct 181 ms 65740 KB Output is correct
8 Correct 170 ms 67392 KB Output is correct
9 Correct 164 ms 65764 KB Output is correct
10 Correct 229 ms 65704 KB Output is correct
11 Correct 235 ms 65816 KB Output is correct
12 Correct 179 ms 66564 KB Output is correct
13 Correct 159 ms 66508 KB Output is correct
14 Correct 204 ms 68112 KB Output is correct
15 Correct 199 ms 67732 KB Output is correct
16 Correct 31 ms 62884 KB Output is correct
17 Execution timed out 4056 ms 69520 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 62892 KB Output is correct
2 Correct 326 ms 66944 KB Output is correct
3 Correct 332 ms 66808 KB Output is correct
4 Correct 345 ms 66952 KB Output is correct
5 Correct 326 ms 66804 KB Output is correct
6 Correct 178 ms 67380 KB Output is correct
7 Correct 181 ms 65740 KB Output is correct
8 Correct 170 ms 67392 KB Output is correct
9 Correct 164 ms 65764 KB Output is correct
10 Correct 229 ms 65704 KB Output is correct
11 Correct 235 ms 65816 KB Output is correct
12 Correct 179 ms 66564 KB Output is correct
13 Correct 159 ms 66508 KB Output is correct
14 Correct 204 ms 68112 KB Output is correct
15 Correct 199 ms 67732 KB Output is correct
16 Correct 30 ms 62932 KB Output is correct
17 Correct 1645 ms 67488 KB Output is correct
18 Correct 1716 ms 71424 KB Output is correct
19 Correct 2840 ms 67936 KB Output is correct
20 Correct 1957 ms 71120 KB Output is correct
21 Correct 1873 ms 68108 KB Output is correct
22 Correct 1693 ms 71376 KB Output is correct
23 Correct 2197 ms 67840 KB Output is correct
24 Correct 1780 ms 71412 KB Output is correct
25 Correct 2215 ms 67872 KB Output is correct
26 Correct 951 ms 68940 KB Output is correct
27 Correct 886 ms 68952 KB Output is correct
28 Correct 1316 ms 69308 KB Output is correct
29 Correct 925 ms 68808 KB Output is correct
30 Correct 860 ms 68988 KB Output is correct
31 Correct 1346 ms 69564 KB Output is correct
32 Correct 1401 ms 70232 KB Output is correct
33 Correct 1126 ms 66616 KB Output is correct
34 Correct 1459 ms 70724 KB Output is correct
35 Correct 1240 ms 66216 KB Output is correct
36 Correct 1462 ms 69736 KB Output is correct
37 Correct 1395 ms 68948 KB Output is correct
38 Correct 1410 ms 68564 KB Output is correct
39 Correct 1088 ms 69608 KB Output is correct
40 Correct 1127 ms 69072 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 62924 KB Output is correct
2 Correct 31 ms 62952 KB Output is correct
3 Correct 29 ms 62820 KB Output is correct
4 Correct 30 ms 62860 KB Output is correct
5 Correct 37 ms 62900 KB Output is correct
6 Correct 42 ms 62860 KB Output is correct
7 Correct 35 ms 62876 KB Output is correct
8 Correct 47 ms 62968 KB Output is correct
9 Correct 49 ms 62960 KB Output is correct
10 Correct 34 ms 62888 KB Output is correct
11 Correct 39 ms 62900 KB Output is correct
12 Correct 35 ms 62972 KB Output is correct
13 Correct 46 ms 62932 KB Output is correct
14 Correct 34 ms 62924 KB Output is correct
15 Correct 39 ms 62968 KB Output is correct
16 Correct 38 ms 62940 KB Output is correct
17 Correct 37 ms 62944 KB Output is correct
18 Correct 38 ms 62944 KB Output is correct
19 Correct 35 ms 62924 KB Output is correct
20 Correct 36 ms 62988 KB Output is correct
21 Correct 32 ms 62892 KB Output is correct
22 Correct 326 ms 66944 KB Output is correct
23 Correct 332 ms 66808 KB Output is correct
24 Correct 345 ms 66952 KB Output is correct
25 Correct 326 ms 66804 KB Output is correct
26 Correct 178 ms 67380 KB Output is correct
27 Correct 181 ms 65740 KB Output is correct
28 Correct 170 ms 67392 KB Output is correct
29 Correct 164 ms 65764 KB Output is correct
30 Correct 229 ms 65704 KB Output is correct
31 Correct 235 ms 65816 KB Output is correct
32 Correct 179 ms 66564 KB Output is correct
33 Correct 159 ms 66508 KB Output is correct
34 Correct 204 ms 68112 KB Output is correct
35 Correct 199 ms 67732 KB Output is correct
36 Correct 416 ms 67304 KB Output is correct
37 Correct 377 ms 66968 KB Output is correct
38 Correct 360 ms 66720 KB Output is correct
39 Correct 363 ms 67288 KB Output is correct
40 Correct 376 ms 66808 KB Output is correct
41 Correct 230 ms 67420 KB Output is correct
42 Correct 183 ms 67348 KB Output is correct
43 Correct 241 ms 65868 KB Output is correct
44 Correct 211 ms 65756 KB Output is correct
45 Correct 310 ms 66124 KB Output is correct
46 Correct 273 ms 65984 KB Output is correct
47 Correct 243 ms 65384 KB Output is correct
48 Correct 192 ms 66524 KB Output is correct
49 Correct 191 ms 66748 KB Output is correct
50 Correct 221 ms 68300 KB Output is correct
51 Correct 209 ms 67812 KB Output is correct
52 Correct 219 ms 68268 KB Output is correct
53 Correct 31 ms 62884 KB Output is correct
54 Execution timed out 4056 ms 69520 KB Time limit exceeded
55 Halted 0 ms 0 KB -