제출 #498727

#제출 시각아이디문제언어결과실행 시간메모리
498727dxz05Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)C++14
34 / 100
3090 ms262148 KiB
//#pragma GCC optimize("Ofast,O2,O3,unroll-loops")
//#pragma GCC target("avx2")

#include <bits/stdc++.h>

using namespace std;

void debug_out() { cerr << endl; }

template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << "[" << H << "]";
    debug_out(T...);
}

#ifdef dddxxz
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

#define SZ(s) ((int)s.size())
#define all(x) (x).begin(), (x).end()
#define lla(x) (x).rbegin(), (x).rend()

clock_t startTime;

double getCurrentTime() {
    return (double) (clock() - startTime) / CLOCKS_PER_SEC;
}

#define MP make_pair

typedef long long ll;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
const double eps = 0.000001;
const int MOD = 998244353;
const int INF = 1000000101;
const long long LLINF = 1223372000000000555;
const int N = 1e6 + 3e2;
const int M = 222;

void merge(vector<int> &v, vector<int> a, vector<int> b){
    int n = a.size(), m = b.size();
    int i = 0, j = 0;
    while (i < n || j < m){
        if (i < n && (j == m || a[i] < b[j])) v.push_back(a[i++]); else
            v.push_back(b[j++]);
    }
}

struct SegTree{
    struct node{
        int ans;
        int mx;
        vector<int> vec;
        node(){
            ans = 0;
            mx = 0;
            vec.clear();
        };
    };

    int size = 1;

    vector<node> tree;

    void build(int v, int tl, int tr, vector<int> &a){
        if (tl == tr){
            tree[v].ans = 0;
            tree[v].mx = a[tl - 1];
            tree[v].vec = {a[tl - 1]};
            return;
        }
        int tm = (tl + tr) >> 1;
        build(v + v, tl, tm, a);
        build(v + v + 1, tm + 1, tr, a);

        merge(tree[v].vec, tree[v + v].vec, tree[v + v + 1].vec);
        tree[v].mx = max(tree[v + v].mx, tree[v + v + 1].mx);
        tree[v].ans = max(tree[v + v].ans, tree[v + v + 1].ans);

        int i = lower_bound(all(tree[v + v + 1].vec), tree[v + v].mx) - tree[v + v + 1].vec.begin() - 1;
        if (i >= 0) tree[v].ans = max(tree[v].ans, tree[v + v].mx + tree[v + v + 1].vec[i]);
    }

    void init(vector<int> &a){
        size = a.size();
        tree.resize(4 * size);
        build(1, 1, size, a);
    }

    int biggest(int v, int tl, int tr, int l, int r, int key){
        if (l <= tl && tr <= r){
            int i = lower_bound(all(tree[v].vec), key) - tree[v].vec.begin() - 1;
            return (i >= 0 ? tree[v].vec[i] : -1);
        }
        if (tl > r || tr < l) return -1;
        int tm = (tl + tr) >> 1;
        return max(biggest(v + v, tl, tm, l, r, key), biggest(v + v + 1, tm + 1, tr, l, r, key));
    }

    pair<int, int> get(int v, int tl, int tr, int l, int r){
        if (l <= tl && tr <= r) return MP(tree[v].ans, tree[v].mx);
        if (tl > r || tr < l) return MP(0, -1);
        int tm = (tl + tr) >> 1;
        auto lf = get(v + v, tl, tm, l, r), rg = get(v + v + 1, tm + 1, tr, l, r);
        int ans = max(lf.first, rg.first);
        if (lf.first != -1) {
            int x = biggest(1, 1, size, tm + 1, r, lf.second);
            if (x != -1) ans = max(ans, lf.second + x);
        }

        return MP(ans, max(lf.second, rg.second));
    }

    int get(int l, int r){
        return get(1, 1, size, l, r).first;
    }

} st;

void solve(int TC) {
    int n, q;
    cin >> n >> q;

    vector<int> a(n);
    for (int &i : a) cin >> i;

    st.init(a);

    while (q--){
        int l, r, k;
        cin >> l >> r >> k;
        cout << (st.get(l, r) <= k) << endl;
    }

}

int main() {
    startTime = clock();
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);

#ifdef dddxxz
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif

    int TC = 1;
    //cin >> TC;

    for (int test = 1; test <= TC; test++) {
        //debug(test);
        //cout << "Case #" << test << ": ";
        solve(test);
    }

    cerr << endl << "Time: " << int(getCurrentTime() * 1000) << " ms" << endl;

    return 0;
}
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