oj.uz

Submission #431566

# Submission time Handle Problem Language Result Execution time Memory
431566 2021-06-17T13:05:13 Z lyc Long Mansion (JOI17_long_mansion) C++14
10 / 100
 3000 ms 47688 KB 
#include <bits/stdc++.h>
using namespace std;

#define TRACE(x) cerr << #x << " :: " << x << endl
#define _ << " " <<
#define SZ(x) ((int)(x).size())
#define ALL(x) (x).begin(),(x).end()
#define FOR(i,a,b) for(int i=(a);i<=(b);++i)
#define RFOR(i,a,b) for(int i=(a);i>=(b);--i)
typedef long long ll;
typedef pair<ll,ll> pll;

const int mxN = 5e5+5;

int N, C[mxN], Q;
set<int> keys[mxN];
int k2[mxN];
int goleft[mxN], goright[mxN];

void mergeto(set<int>& a, set<int>& b) {
    if (SZ(a) > SZ(b)) swap(a,b);
    for (auto& x : a) b.insert(x);
}

int main() {
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> N;
    FOR(i,1,N-1){
        cin >> C[i];
    }
    C[0] = C[N] = 1e9+5; // impossible
    FOR(i,1,N){
        int B; cin >> B;
        FOR(j,1,B){
            int A; cin >> A;
            keys[i].insert(A);
            k2[i] |= (1<<A);
        }
    }

    if (N <= 5000) {
        FOR(i,1,N){
            set<int> k;
            for (auto& x : keys[i]) k.insert(x);
            goleft[i] = goright[i] = i;
            while (true) {
                if (k.count(C[goleft[i]-1])) {
                    --goleft[i];
                    for (auto& x : keys[goleft[i]]) k.insert(x);
                } else if (k.count(C[goright[i]])) {
                    ++goright[i];
                    for (auto& x : keys[goright[i]]) k.insert(x);
                } else break;
            }
        }
    } else {
        FOR(i,1,N){
            goleft[i] = goright[i] = i;
            while (true) {
                if (goleft[i] > 1 && (k2[i] & (1<<C[goleft[i]-1]))) {
                    --goleft[i];
                    k2[i] |= k2[goleft[i]];
                    goleft[i] = goleft[goleft[i]];
                    goright[i] = max(goright[i], goright[i]);
                } else if (goright[i] < N && (k2[i] & (1<<C[goright[i]]))) {
                    ++goright[i];
                    k2[i] |= k2[goright[i]];
                } else break;
            }
        }
    }

    cin >> Q;
    FOR(i,1,Q){
        int X, Y; cin >> X >> Y;
        cout << (goleft[X] <= Y && Y <= goright[X] ? "YES" : "NO") << '\n';
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 24080 KB Output is correct
2 Correct 174 ms 24048 KB Output is correct
3 Correct 433 ms 24128 KB Output is correct
4 Correct 38 ms 24032 KB Output is correct
5 Correct 452 ms 24032 KB Output is correct
6 Correct 178 ms 24044 KB Output is correct
7 Correct 136 ms 24036 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 24080 KB Output is correct
2 Correct 174 ms 24048 KB Output is correct
3 Correct 433 ms 24128 KB Output is correct
4 Correct 38 ms 24032 KB Output is correct
5 Correct 452 ms 24032 KB Output is correct
6 Correct 178 ms 24044 KB Output is correct
7 Correct 136 ms 24036 KB Output is correct
8 Correct 208 ms 25716 KB Output is correct
9 Correct 195 ms 25480 KB Output is correct
10 Correct 311 ms 25692 KB Output is correct
11 Correct 561 ms 25908 KB Output is correct
12 Correct 203 ms 25768 KB Output is correct
13 Correct 179 ms 25768 KB Output is correct
14 Correct 177 ms 25708 KB Output is correct
15 Correct 423 ms 25820 KB Output is correct
16 Correct 618 ms 26016 KB Output is correct
17 Correct 177 ms 25716 KB Output is correct
18 Correct 176 ms 25776 KB Output is correct
19 Correct 233 ms 25716 KB Output is correct
20 Correct 548 ms 25928 KB Output is correct
21 Correct 585 ms 26028 KB Output is correct
22 Correct 493 ms 25784 KB Output is correct
23 Correct 320 ms 25592 KB Output is correct
24 Correct 297 ms 25588 KB Output is correct
25 Correct 267 ms 25548 KB Output is correct
26 Correct 215 ms 25556 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1689 ms 47688 KB Output is correct
2 Execution timed out 3047 ms 45200 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 24080 KB Output is correct
2 Correct 174 ms 24048 KB Output is correct
3 Correct 433 ms 24128 KB Output is correct
4 Correct 38 ms 24032 KB Output is correct
5 Correct 452 ms 24032 KB Output is correct
6 Correct 178 ms 24044 KB Output is correct
7 Correct 136 ms 24036 KB Output is correct
8 Correct 208 ms 25716 KB Output is correct
9 Correct 195 ms 25480 KB Output is correct
10 Correct 311 ms 25692 KB Output is correct
11 Correct 561 ms 25908 KB Output is correct
12 Correct 203 ms 25768 KB Output is correct
13 Correct 179 ms 25768 KB Output is correct
14 Correct 177 ms 25708 KB Output is correct
15 Correct 423 ms 25820 KB Output is correct
16 Correct 618 ms 26016 KB Output is correct
17 Correct 177 ms 25716 KB Output is correct
18 Correct 176 ms 25776 KB Output is correct
19 Correct 233 ms 25716 KB Output is correct
20 Correct 548 ms 25928 KB Output is correct
21 Correct 585 ms 26028 KB Output is correct
22 Correct 493 ms 25784 KB Output is correct
23 Correct 320 ms 25592 KB Output is correct
24 Correct 297 ms 25588 KB Output is correct
25 Correct 267 ms 25548 KB Output is correct
26 Correct 215 ms 25556 KB Output is correct
27 Correct 1689 ms 47688 KB Output is correct
28 Execution timed out 3047 ms 45200 KB Time limit exceeded
29 Halted 0 ms 0 KB -