oj.uz

Submission #807429

# Submission time Handle Problem Language Result Execution time Memory
807429 2023-08-04T17:21:56 Z rnl42 Passport (JOI23_passport) C++14
100 / 100
 371 ms 85888 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

string to_string(string s) { return s; }
template <typename T> string to_string(T v) {
	bool first = true;
	string res = "[";
	for (const auto &x : v) {
		if (!first)
			res += ", ";
		first = false;
		res += to_string(x);
	}
	res += "]";
	return res;
}

template <typename A, typename B>
string to_string(pair<A, B> p) {
  return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}

void dbg_out() { cout << endl; }
template <typename Head, typename... Tail> void dbg_out(Head H, Tail... T) {
	cout << ' ' << to_string(H);
	dbg_out(T...);
}

#ifdef DEBUG
#define dbg(...) cout << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif

constexpr int INF = 1e9;

vector<pair<vector<int>,int>> tree;
int tree_shift = 0;

int N, Q;
vector<int> L, R;
vector<int> X;
vector<vector<int>> dp;

void resetadj() {
    for (auto& k : tree) k.second = 0;
}

struct Adjacency {
    int itree, ivec = 0;
    Adjacency(int u) {
        itree = tree_shift+u;
        ivec = tree[itree].second;
        correctidx();
    }
    inline void correctidx() {
        while (itree != 0 && ivec >= (int)tree[itree].first.size()) {
            itree >>= 1;
            ivec = tree[itree].second;
        }
    }
    Adjacency begin() {
        return Adjacency(itree-tree_shift);
    }
    Adjacency end() {
        return Adjacency(-tree_shift);
    }
    void operator++() {
        ivec++;
        tree[itree].second++;
        correctidx();
    }
    bool operator!=(const Adjacency& other) const {
        return itree != other.itree || ivec != other.ivec;
    }
    int operator*() const {
        return tree[itree].first[ivec];
    }
};

void bfs(vector<int>& dist) {
    vector<vector<int>> q(2*N+10);
    for (int i = 0; i < (int)dist.size(); i++) {
        if (dist[i] < INF) q[dist[i]].push_back(i);
    }
    for (int d = 0; d < (int)q.size(); d++) {
        for (int u : q[d]) {
            if (dist[u] != d) continue;
            for (int v : Adjacency(u)) {
                if (u == v) continue;
                if (dist[u]+1 < dist[v]) {
                    dist[v] = dist[u]+1;
                    q[dist[v]].push_back(v);
                }
            }
        }
    }
    resetadj();
}

signed main() {
    ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
    cin >> N;
    L.resize(N), R.resize(N);
    tree_shift = 1<<__lg(2*N-1);
    tree.resize(2*tree_shift);
    for (int i = 0; i < N; i++) {
        cin >> L[i] >> R[i], L[i]--, R[i]--;
        for (int l = tree_shift+L[i], r = tree_shift+R[i]+1; l < r; l >>= 1, r >>= 1) {
            if (l&1) tree[l++].first.push_back(i);
            if (r&1) tree[--r].first.push_back(i);
        }
    }
    cin >> Q;
    X.resize(Q);
    for (int i = 0; i < Q; i++) {
        cin >> X[i], X[i]--;
    }
    vector<int> ddeb(N, INF);
    ddeb[0] = 0;
    bfs(ddeb);
    ddeb[0]++;

    vector<int> dfin(N, INF);
    dfin[N-1] = 0;
    bfs(dfin);
    dfin[N-1]++;

    vector<int> ans(N);
    for (int i = 0; i < N; i++) {
        ans[i] = ddeb[i]+dfin[i];
    }
    bfs(ans);
    for (int i = 0; i < N; i++) if (ans[i] >= INF) ans[i] = -1; else ans[i]--;
    for (int i = 0; i < Q; i++) {
        cout << ans[X[i]] << '\n';
    }
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 327 ms 69404 KB Output is correct
5 Correct 165 ms 59396 KB Output is correct
6 Correct 101 ms 50496 KB Output is correct
7 Correct 98 ms 55620 KB Output is correct
8 Correct 62 ms 51160 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 2 ms 980 KB Output is correct
17 Correct 2 ms 980 KB Output is correct
18 Correct 2 ms 1108 KB Output is correct
19 Correct 2 ms 1108 KB Output is correct
20 Correct 2 ms 980 KB Output is correct
21 Correct 2 ms 980 KB Output is correct
22 Correct 1 ms 980 KB Output is correct
23 Correct 2 ms 980 KB Output is correct
24 Correct 1 ms 980 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 2 ms 980 KB Output is correct
17 Correct 2 ms 980 KB Output is correct
18 Correct 2 ms 1108 KB Output is correct
19 Correct 2 ms 1108 KB Output is correct
20 Correct 2 ms 980 KB Output is correct
21 Correct 2 ms 980 KB Output is correct
22 Correct 1 ms 980 KB Output is correct
23 Correct 2 ms 980 KB Output is correct
24 Correct 1 ms 980 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 3 ms 1108 KB Output is correct
28 Correct 2 ms 980 KB Output is correct
29 Correct 2 ms 980 KB Output is correct
30 Correct 2 ms 980 KB Output is correct
31 Correct 2 ms 980 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 327 ms 69404 KB Output is correct
5 Correct 165 ms 59396 KB Output is correct
6 Correct 101 ms 50496 KB Output is correct
7 Correct 98 ms 55620 KB Output is correct
8 Correct 62 ms 51160 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 2 ms 980 KB Output is correct
25 Correct 2 ms 980 KB Output is correct
26 Correct 2 ms 1108 KB Output is correct
27 Correct 2 ms 1108 KB Output is correct
28 Correct 2 ms 980 KB Output is correct
29 Correct 2 ms 980 KB Output is correct
30 Correct 1 ms 980 KB Output is correct
31 Correct 2 ms 980 KB Output is correct
32 Correct 1 ms 980 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 3 ms 1108 KB Output is correct
36 Correct 2 ms 980 KB Output is correct
37 Correct 2 ms 980 KB Output is correct
38 Correct 2 ms 980 KB Output is correct
39 Correct 2 ms 980 KB Output is correct
40 Correct 371 ms 75844 KB Output is correct
41 Correct 187 ms 63756 KB Output is correct
42 Correct 238 ms 85888 KB Output is correct
43 Correct 219 ms 84084 KB Output is correct
44 Correct 127 ms 54780 KB Output is correct
45 Correct 149 ms 60440 KB Output is correct
46 Correct 55 ms 23788 KB Output is correct
47 Correct 163 ms 62260 KB Output is correct
48 Correct 152 ms 62700 KB Output is correct