oj.uz

답안 #526871

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
526871 2022-02-16T13:05:50 Z abc864197532 Railway Trip 2 (JOI22_ho_t4) C++17
52 / 100
 2000 ms 226016 KB 
#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define pii pair <int, int>
#define X first
#define Y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    for (; l != r; ++l) cout << *l << " \n"[l + 1 == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.X >> a.Y;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.X << ", " << a.Y << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    if (a.empty()) return o << "{}";
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}
template <typename T> struct vv : vector <vector <T>> {
    vv(int n, int m, T v) : vector <vector <T>> (n, vector <T>(m, v)) {}
    vv() {}
};
template <typename T> struct vvv : vector <vv <T>> {
    vvv(int n, int m, int k, T v) : vector <vv <T>> (n, vv <T>(m, k, v)) {}
    vvv() {}
};
#ifdef Doludu
#define test(args...) abc("[" + string(#args) + "]", args)
#define owo freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout); 
#else
#define test(args...) void(0)
#define owo ios::sync_with_stdio(false); cin.tie(0)
#endif
const int mod = 1e9 + 7, N = 1e5 + 7, logN = 18, K = 111, M = N * 20;

pii mer(pii a, pii b) {
    return mp(min(a.X, b.X), max(a.Y, b.Y));
}

struct Seg {
    int l, r, m, mn, mx, lzmn, lzmx;
    Seg* ch[2];
    Seg (int _l, int _r) : l(_l), r(_r), m(l + r >> 1), lzmn(-1), lzmx(-1) {
        if (r - l > 1) {
            ch[0] = new Seg(l, m);
            ch[1] = new Seg(m, r);
            pull();
        } else {
            mn = l, mx = l + 1;
        }
    }
    void pull() {
        mn = min(ch[0]->mn, ch[1]->mn);
        mx = max(ch[0]->mx, ch[1]->mx);
    }
    void give_mn(int v) {
        if (lzmn != -1 && lzmn <= v)
            return;
        mn = min(mn, v), lzmn = v;
    }
    void give_mx(int v) {
        if (lzmx != -1 && lzmx >= v)
            return;
        mx = max(mx, v), lzmx = v;
    }
    void push() {
        if (lzmn != -1)
            ch[0]->give_mn(lzmn), ch[1]->give_mn(lzmn);
        if (lzmx != -1)
            ch[0]->give_mx(lzmx), ch[1]->give_mx(lzmx);
        lzmn = lzmx = -1;
    }
    void modify(int a, int b, int mnv, int mxv) {
        if (a <= l && r <= b)
            give_mn(mnv), give_mx(mxv);
        else {
            push();
            if (a < m)
                ch[0]->modify(a, b, mnv, mxv);
            if (m < b)
                ch[1]->modify(a, b, mnv, mxv);
            pull();
        }
    }
    pii query(int a, int b) {
        if (a <= l && r <= b)
            return mp(mn, mx);
        pii ans = mp(1 << 30, -1 << 30);
        push();
        if (a < m)
            ans = mer(ans, ch[0]->query(a, b));
        if (m < b)
            ans = mer(ans, ch[1]->query(a, b));
        return ans;
    }
};

Seg* root[logN];

int main () {
    owo;
    int n, k, m, q;
    cin >> n >> k >> m;
    root[0] = new Seg(0, n);
    for (int i = 0, l, r; i < m; ++i) {
        cin >> l >> r;
        if (l < r)
            --l, root[0]->modify(l, min(l + k, r), 1 << 30, r);
        else
            --r, root[0]->modify(max(l - k, r), l, r, -1 << 30);
    }
    for (int j = 1; j < logN; ++j) {
        root[j] = new Seg(0, n);
        for (int i = 0; i < n; ++i) {
            int l, r; tie(l, r) = root[j - 1]->query(i, i + 1);
            tie(l, r) = root[j - 1]->query(l, r);
            root[j]->modify(i, i + 1, l, r);
        }
    }
    cin >> q;
    while (q--) {
        int l, r;
        cin >> l >> r, --l, --r;
        {
            int curl, curr;
            tie(curl, curr) = root[logN - 1]->query(l, l + 1);
            if (r < curl || curr <= r) {
                cout << -1 << endl;
                continue;
            }
        }
        int curl = l, curr = l + 1, ans = 0;
        for (int i = logN - 1; ~i; --i) {
            int nxtl, nxtr; tie(nxtl, nxtr) = root[i]->query(curl, curr);
            if (r < nxtl || nxtr <= r) {
                ans |= 1 << i;
                tie(curl, curr) = mp(nxtl, nxtr);
            }
        }
        cout << ans + 1 << endl;
    }
}

Compilation message

Main.cpp: In constructor 'Seg::Seg(int, int)':
Main.cpp:55:46: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   55 |     Seg (int _l, int _r) : l(_l), r(_r), m(l + r >> 1), lzmn(-1), lzmx(-1) {
      |                                            ~~^~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 988 KB Output is correct
2 Correct 3 ms 972 KB Output is correct
3 Correct 2 ms 972 KB Output is correct
4 Correct 4 ms 972 KB Output is correct
5 Correct 3 ms 972 KB Output is correct
6 Correct 3 ms 972 KB Output is correct
7 Correct 5 ms 844 KB Output is correct
8 Correct 3 ms 972 KB Output is correct
9 Correct 3 ms 972 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 2 ms 972 KB Output is correct
12 Correct 2 ms 976 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 988 KB Output is correct
2 Correct 3 ms 972 KB Output is correct
3 Correct 2 ms 972 KB Output is correct
4 Correct 4 ms 972 KB Output is correct
5 Correct 3 ms 972 KB Output is correct
6 Correct 3 ms 972 KB Output is correct
7 Correct 5 ms 844 KB Output is correct
8 Correct 3 ms 972 KB Output is correct
9 Correct 3 ms 972 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 2 ms 972 KB Output is correct
12 Correct 2 ms 976 KB Output is correct
13 Correct 22 ms 4812 KB Output is correct
14 Correct 21 ms 4764 KB Output is correct
15 Correct 12 ms 4732 KB Output is correct
16 Correct 15 ms 4824 KB Output is correct
17 Correct 20 ms 4820 KB Output is correct
18 Correct 16 ms 4816 KB Output is correct
19 Correct 19 ms 4520 KB Output is correct
20 Correct 16 ms 4812 KB Output is correct
21 Correct 11 ms 4812 KB Output is correct
22 Correct 21 ms 4692 KB Output is correct
23 Correct 29 ms 4764 KB Output is correct
24 Correct 20 ms 4816 KB Output is correct

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1018 ms 225728 KB Output is correct
2 Correct 950 ms 225720 KB Output is correct
3 Correct 1022 ms 225820 KB Output is correct
4 Correct 934 ms 225828 KB Output is correct
5 Correct 884 ms 225672 KB Output is correct
6 Correct 958 ms 225628 KB Output is correct
7 Correct 771 ms 225692 KB Output is correct
8 Correct 692 ms 223460 KB Output is correct
9 Correct 727 ms 225684 KB Output is correct
10 Correct 1000 ms 225840 KB Output is correct
11 Correct 933 ms 225736 KB Output is correct

Subtask #4
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1457 ms 225808 KB Output is correct
2 Correct 1142 ms 225808 KB Output is correct
3 Correct 1619 ms 225976 KB Output is correct
4 Correct 1064 ms 225740 KB Output is correct
5 Correct 1139 ms 223632 KB Output is correct
6 Correct 1246 ms 225896 KB Output is correct
7 Correct 1619 ms 225864 KB Output is correct
8 Correct 1589 ms 225888 KB Output is correct

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1158 ms 225948 KB Output is correct
2 Execution timed out 2021 ms 226016 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 988 KB Output is correct
2 Correct 3 ms 972 KB Output is correct
3 Correct 2 ms 972 KB Output is correct
4 Correct 4 ms 972 KB Output is correct
5 Correct 3 ms 972 KB Output is correct
6 Correct 3 ms 972 KB Output is correct
7 Correct 5 ms 844 KB Output is correct
8 Correct 3 ms 972 KB Output is correct
9 Correct 3 ms 972 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 2 ms 972 KB Output is correct
12 Correct 2 ms 976 KB Output is correct
13 Correct 22 ms 4812 KB Output is correct
14 Correct 21 ms 4764 KB Output is correct
15 Correct 12 ms 4732 KB Output is correct
16 Correct 15 ms 4824 KB Output is correct
17 Correct 20 ms 4820 KB Output is correct
18 Correct 16 ms 4816 KB Output is correct
19 Correct 19 ms 4520 KB Output is correct
20 Correct 16 ms 4812 KB Output is correct
21 Correct 11 ms 4812 KB Output is correct
22 Correct 21 ms 4692 KB Output is correct
23 Correct 29 ms 4764 KB Output is correct
24 Correct 20 ms 4816 KB Output is correct
25 Correct 1018 ms 225728 KB Output is correct
26 Correct 950 ms 225720 KB Output is correct
27 Correct 1022 ms 225820 KB Output is correct
28 Correct 934 ms 225828 KB Output is correct
29 Correct 884 ms 225672 KB Output is correct
30 Correct 958 ms 225628 KB Output is correct
31 Correct 771 ms 225692 KB Output is correct
32 Correct 692 ms 223460 KB Output is correct
33 Correct 727 ms 225684 KB Output is correct
34 Correct 1000 ms 225840 KB Output is correct
35 Correct 933 ms 225736 KB Output is correct
36 Correct 1457 ms 225808 KB Output is correct
37 Correct 1142 ms 225808 KB Output is correct
38 Correct 1619 ms 225976 KB Output is correct
39 Correct 1064 ms 225740 KB Output is correct
40 Correct 1139 ms 223632 KB Output is correct
41 Correct 1246 ms 225896 KB Output is correct
42 Correct 1619 ms 225864 KB Output is correct
43 Correct 1589 ms 225888 KB Output is correct
44 Correct 1158 ms 225948 KB Output is correct
45 Execution timed out 2021 ms 226016 KB Time limit exceeded
46 Halted 0 ms 0 KB -