oj.uz

Submission #773100

# Submission time Handle Problem Language Result Execution time Memory
773100 2023-07-04T15:10:34 Z PixelCat Long Mansion (JOI17_long_mansion) C++14
10 / 100
 3000 ms 28392 KB 
/*     code by PixelCat     */
/*         meow owo         */

#include <bits/stdc++.h>
#define int LL  //__int128
#define double long double
using namespace std;
using LL = long long;
// using i128 = __int128_t;
using ull = unsigned long long;
using pii = pair<int, int>;

#define For(i, a, b) for (int i = a; i <= b; i++)
#define Fors(i, a, b, s) for (int i = a; i <= b; i += s)
#define Forr(i, a, b) for (int i = a; i >= b; i--)
#define F first
#define S second

#define eb emplace_back
#define all(x) x.begin(), x.end()
#define sz(x) ((int)x.size())
#define mkp make_pair

#define MOD (int)(998244353)
// #define MOD (int)((LL)1'000'000'007)
#define INF (int)(4e18)
#define EPS (1e-6)

namespace PixelCat {

#ifdef NYAOWO
#include "/home/pixelcat/yodayo/meow/library/debug.hpp"
inline void USACO(const string &s) {
    cerr << "USACO: " << s << "\n";
}

#else
#define debug(...)
inline void timer() {}
inline void USACO(const string &s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

#endif

inline void NYA() {
    ios::sync_with_stdio(false);
    cin.tie(0);
}
inline int gcd(int a, int b) {
    return __gcd(a, b);
}
inline int lcm(int a, int b) {
    return a / gcd(a, b) * b;
}
int fpow(int b, int p, const int &mod = MOD) {
    int ans = 1;
    for (; p; p >>= 1, b = b * b % mod)
        if (p & 1) ans = ans * b % mod;
    return ans;
}
template <typename T>
inline void chmin(T &_a, const T &_b) {
    if (_b < _a) _a = _b;
}
template <typename T>
inline void chmax(T &_a, const T &_b) {
    if (_a < _b) _a = _b;
}
mt19937_64 rng(
    chrono::steady_clock::now().time_since_epoch().count());

} // namespace PixelCat
using namespace PixelCat;

const int MAXN = 500050;

int key[MAXN];
vector<int> pos[MAXN];
pii ans[MAXN];

// check if there's any key of type [k] in range [l, r]
bool check(int l, int r, int k) {
    return lower_bound(all(pos[k]), l) != upper_bound(all(pos[k]), r);
}

struct Ayaya {
    vector<int> start;
    int l, r, sl, sr;
    Ayaya(int s): start(1, s), l(s), r(s), sl(s), sr(s) {}
    int len() { return r - l + 1; }
    bool inside(int x) { return l <= x && x <= r; }
    void dead() { for(auto &i:start) ans[i] = pii(l, r); }
    bool expand(int n) {
        if(r < n && check(l, r, key[r])) {
            r++; return true;
        } else if(l > 1 && check(l, r, key[l - 1])) {
            l--; return true;
        }
        return false;
    }
};
void merge(Ayaya *&a, Ayaya *&b) {
    if(sz(a->start) < sz(b->start)) swap(a, b);
    a->start.insert(a->start.end(), all(b->start));
    a->l = min(a->l, b->l);
    a->sl = min(a->sl, b->sl);
    a->r = max(a->r, b->r);
    a->sr = max(a->sr, b->sr);
}
bool overlap(Ayaya *a, Ayaya *b) {
    return (a->inside(b->sl) || a->inside(b->sr)) &&
           (b->inside(a->sl) || b->inside(a->sr));
}

struct AyayaCmp {
    bool operator()(Ayaya* const& a, Ayaya* const& b) {
        if(a->len() != b->len()) return a->len() > b->len();
        return a->l > b->l;
    }
};

void solve(int n) {
    priority_queue<Ayaya*, vector<Ayaya*>, AyayaCmp> pq;
    For(i, 1, n) {
        pq.emplace(new Ayaya(i));
    }
    while(!pq.empty()) {
        Ayaya* a = pq.top(); pq.pop();
        while(sz(pq) && overlap(a, pq.top())) {
            Ayaya* b = pq.top(); pq.pop();
            merge(a, b);
            delete b;
        }
        if(a->expand(n)) {
            pq.emplace(a);
        } else {
            a->dead();
            delete a;
        }
    }
}

void solve_slow(int n) {
    For(i, 1, n) {
        Ayaya aya(i);
        while(aya.expand(n));
        aya.dead();
    }
}

int32_t main() {
    NYA();
    // nyaacho >/////<
    int n; cin >> n;
    For(i, 1, n - 1) cin >> key[i];
    For(i, 1, n) {
        int k; cin >> k;
        while(k--) {
            int x; cin >> x;
            pos[x].eb(i);
        }
    }

    solve(n);
    
    int q; cin >> q;
    while(q--) {
        int x, y; cin >> x >> y;
        pii &r = ans[x];
        if(r.F <= y && y <= r.S) {
            cout << "YES\n";
        } else {
            cout << "NO\n";
        }
    }

    // For(i, 1, n) {
    //     cerr << ans[i].F << ", " << ans[i].S << "\n";
    // }
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12416 KB Output is correct
2 Correct 160 ms 12528 KB Output is correct
3 Correct 943 ms 12760 KB Output is correct
4 Correct 12 ms 12372 KB Output is correct
5 Correct 204 ms 12360 KB Output is correct
6 Correct 33 ms 12388 KB Output is correct
7 Correct 13 ms 12372 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12416 KB Output is correct
2 Correct 160 ms 12528 KB Output is correct
3 Correct 943 ms 12760 KB Output is correct
4 Correct 12 ms 12372 KB Output is correct
5 Correct 204 ms 12360 KB Output is correct
6 Correct 33 ms 12388 KB Output is correct
7 Correct 13 ms 12372 KB Output is correct
8 Correct 96 ms 13872 KB Output is correct
9 Correct 78 ms 13896 KB Output is correct
10 Correct 231 ms 14144 KB Output is correct
11 Correct 961 ms 14448 KB Output is correct
12 Correct 100 ms 13900 KB Output is correct
13 Correct 77 ms 14084 KB Output is correct
14 Correct 79 ms 14128 KB Output is correct
15 Correct 90 ms 14152 KB Output is correct
16 Correct 253 ms 14412 KB Output is correct
17 Correct 76 ms 14088 KB Output is correct
18 Correct 84 ms 14100 KB Output is correct
19 Correct 89 ms 14060 KB Output is correct
20 Correct 150 ms 14284 KB Output is correct
21 Correct 258 ms 14276 KB Output is correct
22 Correct 127 ms 14172 KB Output is correct
23 Correct 81 ms 13960 KB Output is correct
24 Correct 80 ms 13948 KB Output is correct
25 Correct 84 ms 13964 KB Output is correct
26 Correct 76 ms 13856 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3061 ms 28392 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12416 KB Output is correct
2 Correct 160 ms 12528 KB Output is correct
3 Correct 943 ms 12760 KB Output is correct
4 Correct 12 ms 12372 KB Output is correct
5 Correct 204 ms 12360 KB Output is correct
6 Correct 33 ms 12388 KB Output is correct
7 Correct 13 ms 12372 KB Output is correct
8 Correct 96 ms 13872 KB Output is correct
9 Correct 78 ms 13896 KB Output is correct
10 Correct 231 ms 14144 KB Output is correct
11 Correct 961 ms 14448 KB Output is correct
12 Correct 100 ms 13900 KB Output is correct
13 Correct 77 ms 14084 KB Output is correct
14 Correct 79 ms 14128 KB Output is correct
15 Correct 90 ms 14152 KB Output is correct
16 Correct 253 ms 14412 KB Output is correct
17 Correct 76 ms 14088 KB Output is correct
18 Correct 84 ms 14100 KB Output is correct
19 Correct 89 ms 14060 KB Output is correct
20 Correct 150 ms 14284 KB Output is correct
21 Correct 258 ms 14276 KB Output is correct
22 Correct 127 ms 14172 KB Output is correct
23 Correct 81 ms 13960 KB Output is correct
24 Correct 80 ms 13948 KB Output is correct
25 Correct 84 ms 13964 KB Output is correct
26 Correct 76 ms 13856 KB Output is correct
27 Execution timed out 3061 ms 28392 KB Time limit exceeded
28 Halted 0 ms 0 KB -