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Submission #1084991

# Submission time Handle Problem Language Result Execution time Memory
1084991 2024-09-07T09:48:50 Z makrav Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
100 / 100
 1914 ms 186436 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define pb push_back
#define ff first
#define sc second

struct node {
    int mval, ans, push;
    node() = default;
    node(int mval_, int ans_) {
        mval = mval_;
        ans = ans_;
        push = 0;
    }
};

node operator+(node x, node y) {
    return node(max(x.mval, y.mval), max(x.ans, y.ans));
}

struct segtree {
    int n;
    vector<node> t;
    vector<int> a;
    segtree() = default;
    segtree(int n_, vector<int> a_) {
        n = n_;
        a = a_;
        t.resize(4 * n);
        build(1, 0, n);
    }

    void build(int v, int tl, int tr) {
        if (tl + 1 == tr) {
            t[v] = node(a[tl], 0);
            return;
        }
        int tm = (tl + tr) / 2;
        build(v * 2, tl, tm); build(v * 2 + 1, tm, tr);
        t[v] = t[v * 2] + t[v * 2 + 1];
    }
    
    void push(int v, int tl, int tr) {
        if (t[v].push > 0) {
            t[v].ans = t[v].mval + t[v].push;
            if (tl + 1 < tr) {
                t[v * 2].push = t[v].push;
                t[v * 2 + 1].push = t[v].push;
            }
            t[v].push = 0;
            return;
        }
        if (tl + 1 == tr) return;
        int vll = (t[v * 2].push ? t[v * 2].push + t[v * 2].mval : t[v * 2].ans), vlr = (t[v * 2 + 1].push ? t[v * 2 + 1].push + t[v * 2 + 1].mval : t[v * 2 + 1].ans);
        t[v].ans = max(vll, vlr);
    }   

    void upd(int v, int tl, int tr, int l, int r, int x) {
        push(v, tl, tr);
        if (l <= tl && tr <= r) {
            t[v].push = x;
            return;
        }
        if (tr <= l || tl >= r) return;
        int tm = (tl + tr) / 2;
        upd(v * 2, tl, tm, l, r, x); upd(v * 2 + 1, tm, tr, l, r, x);
        push(v, tl, tr);
    }

    node get(int v, int tl, int tr, int l, int r) {
        push(v, tl, tr);
        if (tr <= l || tl >= r) return node(0, 0);
        if (l <= tl && tr <= r) return t[v];
        int tm = (tl + tr) / 2;
        return get(v * 2, tl, tm, l, r) + get(v * 2 + 1, tm, tr, l, r);
    }
};  

void solve() {
    int n, q; cin >> n >> q;
    vector<int> w(n);
    for (int i = 0; i < n; i++) cin >> w[i];
    vector<vector<vector<int>>> reqs(n);
    for (int i = 0; i < q; i++) {
        int l, r, k; cin >> l >> r >> k;
        l--; r--;
        reqs[l].pb({i, r, k});
    }
    vector<int> ans(q, 1);
    segtree sg(n, w);
    stack<int> st;
    st.push(n - 1);
    for (int i = n - 2; i >= 0; i--) {
        while (!st.empty() && w[i] > w[st.top()]) {
            st.pop();
        }
        int nxt = (st.empty() ? n : st.top());
        if (nxt - i > 1) {
            sg.upd(1, 0, n, i + 1, nxt, w[i]);
        }
        st.push(i);
        for (auto u : reqs[i]) {
            int mx_n = sg.get(1, 0, n, i, u[1] + 1).ans;
            ans[u[0]] = (mx_n <= u[2]);
        }
    }
    for (auto &u : ans) cout << u << '\n';
}

signed main() {
    int tt = 1;
    #ifdef LOCAL 
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
    #else
        ios::sync_with_stdio(false); 
        cin.tie(0); cout.tie(0);
    #endif

    while (tt--) {
        solve();
    }

    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 388 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 388 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 3 ms 1116 KB Output is correct
14 Correct 5 ms 1136 KB Output is correct
15 Correct 5 ms 1372 KB Output is correct
16 Correct 4 ms 1320 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 3 ms 1116 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1796 ms 182056 KB Output is correct
2 Correct 1914 ms 183180 KB Output is correct
3 Correct 1822 ms 183224 KB Output is correct
4 Correct 1865 ms 183380 KB Output is correct
5 Correct 1660 ms 185248 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 17236 KB Output is correct
2 Correct 108 ms 17336 KB Output is correct
3 Correct 96 ms 17612 KB Output is correct
4 Correct 98 ms 17608 KB Output is correct
5 Correct 94 ms 17596 KB Output is correct
6 Correct 97 ms 17232 KB Output is correct
7 Correct 90 ms 17096 KB Output is correct
8 Correct 75 ms 16900 KB Output is correct
9 Correct 35 ms 8196 KB Output is correct
10 Correct 73 ms 16996 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 388 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 3 ms 1116 KB Output is correct
14 Correct 5 ms 1136 KB Output is correct
15 Correct 5 ms 1372 KB Output is correct
16 Correct 4 ms 1320 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 3 ms 1116 KB Output is correct
19 Correct 284 ms 36936 KB Output is correct
20 Correct 282 ms 36884 KB Output is correct
21 Correct 245 ms 37200 KB Output is correct
22 Correct 249 ms 37200 KB Output is correct
23 Correct 288 ms 37204 KB Output is correct
24 Correct 213 ms 37696 KB Output is correct
25 Correct 233 ms 37652 KB Output is correct
26 Correct 241 ms 37548 KB Output is correct
27 Correct 231 ms 37332 KB Output is correct
28 Correct 240 ms 37456 KB Output is correct
29 Correct 223 ms 37180 KB Output is correct
30 Correct 248 ms 37184 KB Output is correct
31 Correct 228 ms 37284 KB Output is correct
32 Correct 229 ms 37192 KB Output is correct
33 Correct 234 ms 37188 KB Output is correct
34 Correct 191 ms 36568 KB Output is correct
35 Correct 204 ms 36628 KB Output is correct
36 Correct 205 ms 36416 KB Output is correct
37 Correct 196 ms 36492 KB Output is correct
38 Correct 197 ms 36672 KB Output is correct
39 Correct 208 ms 35320 KB Output is correct
40 Correct 140 ms 28676 KB Output is correct
41 Correct 185 ms 34820 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 388 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 2 ms 604 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 3 ms 1116 KB Output is correct
14 Correct 5 ms 1136 KB Output is correct
15 Correct 5 ms 1372 KB Output is correct
16 Correct 4 ms 1320 KB Output is correct
17 Correct 3 ms 1116 KB Output is correct
18 Correct 3 ms 1116 KB Output is correct
19 Correct 1796 ms 182056 KB Output is correct
20 Correct 1914 ms 183180 KB Output is correct
21 Correct 1822 ms 183224 KB Output is correct
22 Correct 1865 ms 183380 KB Output is correct
23 Correct 1660 ms 185248 KB Output is correct
24 Correct 133 ms 17236 KB Output is correct
25 Correct 108 ms 17336 KB Output is correct
26 Correct 96 ms 17612 KB Output is correct
27 Correct 98 ms 17608 KB Output is correct
28 Correct 94 ms 17596 KB Output is correct
29 Correct 97 ms 17232 KB Output is correct
30 Correct 90 ms 17096 KB Output is correct
31 Correct 75 ms 16900 KB Output is correct
32 Correct 35 ms 8196 KB Output is correct
33 Correct 73 ms 16996 KB Output is correct
34 Correct 284 ms 36936 KB Output is correct
35 Correct 282 ms 36884 KB Output is correct
36 Correct 245 ms 37200 KB Output is correct
37 Correct 249 ms 37200 KB Output is correct
38 Correct 288 ms 37204 KB Output is correct
39 Correct 213 ms 37696 KB Output is correct
40 Correct 233 ms 37652 KB Output is correct
41 Correct 241 ms 37548 KB Output is correct
42 Correct 231 ms 37332 KB Output is correct
43 Correct 240 ms 37456 KB Output is correct
44 Correct 223 ms 37180 KB Output is correct
45 Correct 248 ms 37184 KB Output is correct
46 Correct 228 ms 37284 KB Output is correct
47 Correct 229 ms 37192 KB Output is correct
48 Correct 234 ms 37188 KB Output is correct
49 Correct 191 ms 36568 KB Output is correct
50 Correct 204 ms 36628 KB Output is correct
51 Correct 205 ms 36416 KB Output is correct
52 Correct 196 ms 36492 KB Output is correct
53 Correct 197 ms 36672 KB Output is correct
54 Correct 208 ms 35320 KB Output is correct
55 Correct 140 ms 28676 KB Output is correct
56 Correct 185 ms 34820 KB Output is correct
57 Correct 1754 ms 183440 KB Output is correct
58 Correct 1884 ms 183432 KB Output is correct
59 Correct 1713 ms 184144 KB Output is correct
60 Correct 1711 ms 184144 KB Output is correct
61 Correct 1728 ms 184152 KB Output is correct
62 Correct 1716 ms 184080 KB Output is correct
63 Correct 1237 ms 182328 KB Output is correct
64 Correct 1270 ms 182296 KB Output is correct
65 Correct 1570 ms 186432 KB Output is correct
66 Correct 1473 ms 186436 KB Output is correct
67 Correct 1542 ms 186328 KB Output is correct
68 Correct 1574 ms 185616 KB Output is correct
69 Correct 1602 ms 185652 KB Output is correct
70 Correct 1616 ms 185864 KB Output is correct
71 Correct 1700 ms 185916 KB Output is correct
72 Correct 1603 ms 185804 KB Output is correct
73 Correct 1188 ms 175996 KB Output is correct
74 Correct 1257 ms 176728 KB Output is correct
75 Correct 1173 ms 175888 KB Output is correct
76 Correct 1215 ms 176012 KB Output is correct
77 Correct 1294 ms 176204 KB Output is correct
78 Correct 1443 ms 176380 KB Output is correct
79 Correct 883 ms 131340 KB Output is correct
80 Correct 1165 ms 174028 KB Output is correct