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Submission #564026

# Submission time Handle Problem Language Result Execution time Memory
564026 2022-05-18T12:58:01 Z Cyanmond Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 921 ms 262144 KB 
#include <bits/stdc++.h>

using namespace std;
using i64 = int64_t;

constexpr int inf = 1 << 30;

#define REP(i, n) for (int i = 0; i < (n); ++i)
#define REP3(i, l, r) for (int i = (l); i < (r); ++i)
#define RVP(i, n) for (int i = (n - 1); i >= 0; --i)

#define ALL(x) (x).begin(), (x).end()
template <typename T> bool chmin(T &a, const T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

constexpr int V = 3000000;

int main() {
    int N, M;
    cin >> N >> M;
    vector<pair<short, short>> A(M);
    REP(i, M) {
        cin >> A[i].first >> A[i].second;
        chmin(A[i].second, (short)N);
    }
    int S = 0, T = 0;
    {
        const auto as = A[0], at = A[1];
        sort(ALL(A), [](auto a, auto b) {
            if (a.second != b.second) {
                return a.second < b.second;
            }
            return a.first < b.first;
        });
        REP(i, M) {
            if (A[i] == as) S = i;
            if (A[i] == at) T = i;
        }
    }
    vector<vector<pair<short, bool>>> lst(N);
    REP(i, M) {
        if ((not lst[A[i].first].empty()) and lst[A[i].first].back().first == A[i].second) {
            lst[A[i].first].back().second = true;
            continue;
        } else {
            lst[A[i].first].push_back({A[i].second, true});
        }
        int f = A[i].first % A[i].second;
        while (f < N) {
            lst[f].push_back({A[i].second, false});
            f += A[i].second;
            if (f == A[i].first) f += A[i].second;
        }
    }

    vector<int> size_r(N + 1);
    REP(i, N) size_r[i + 1] = size_r[i] + (int)lst[i].size();

    static array<pair<int, int>, V> pair_lr;
    static array<int, V> par;
    vector<vector<int>> chd(N);
    vector<unordered_map<short, int>> id_m(N);
    REP(i, N) { REP(j, (int)lst[i].size()) id_m[i][lst[i][j].first] = size_r[i] + j; }
    REP(i, N) {
        for (const auto &[w, c] : lst[i]) {
            const int id = id_m[i][w];
            pair_lr[id] = {-1, -1};
            par[id] = size_r[N] + i;
            if (c) chd[i].push_back(id);
            const int l = i - w;
            if (l >= 0) {
                const int id2 = id_m[l][w];
                pair_lr[id].first = id2;
                pair_lr[id2].second = id;
            }
        }
    }

    static array<int, V> dist;
    fill(ALL(dist), inf);
    dist[size_r[N] + A[S].first] = 0;
    deque<int> deq;
    deq.push_back(size_r[N] + A[S].first);
    while (not deq.empty()) {
        const int f = deq.front();
        deq.pop_front();
        if (f >= size_r[N]) {
            for (const int t : chd[f - size_r[N]]) {
                if (chmin(dist[t], dist[f])) {
                    deq.push_front(t);
                }
            }
        } else {
            const auto &[l, r] = pair_lr[f];
            if (l != -1 and chmin(dist[l], dist[f] + 1)) {
                deq.push_back(l);
            }
            if (r != -1 and chmin(dist[r], dist[f] + 1)) {
                deq.push_back(r);
            }
            const int pa = par[f];
            if (chmin(dist[pa], dist[f])) {
                deq.push_front(pa);
            }
        }
    }
    auto ans = dist[size_r[N] + A[T].first];
    if (ans == inf) ans = -1;
    cout << ans << endl;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 6 ms 11956 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 7 ms 11988 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 7 ms 11960 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 7 ms 11988 KB Output is correct
7 Correct 6 ms 11988 KB Output is correct
8 Correct 6 ms 12056 KB Output is correct
9 Correct 6 ms 12080 KB Output is correct
10 Correct 6 ms 12116 KB Output is correct
11 Correct 7 ms 12372 KB Output is correct
12 Correct 7 ms 12104 KB Output is correct
13 Correct 7 ms 12056 KB Output is correct
14 Correct 9 ms 12460 KB Output is correct
15 Correct 8 ms 12500 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11956 KB Output is correct
3 Correct 6 ms 12052 KB Output is correct
4 Correct 7 ms 11952 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 7 ms 11988 KB Output is correct
7 Correct 6 ms 11988 KB Output is correct
8 Correct 7 ms 11988 KB Output is correct
9 Correct 6 ms 12084 KB Output is correct
10 Correct 7 ms 12116 KB Output is correct
11 Correct 9 ms 12316 KB Output is correct
12 Correct 7 ms 12092 KB Output is correct
13 Correct 7 ms 12108 KB Output is correct
14 Correct 9 ms 12500 KB Output is correct
15 Correct 8 ms 12500 KB Output is correct
16 Correct 8 ms 12344 KB Output is correct
17 Correct 13 ms 13012 KB Output is correct
18 Correct 9 ms 12744 KB Output is correct
19 Correct 9 ms 12712 KB Output is correct
20 Correct 8 ms 12728 KB Output is correct
21 Correct 7 ms 12244 KB Output is correct
22 Correct 8 ms 12756 KB Output is correct
23 Correct 9 ms 12756 KB Output is correct
24 Correct 11 ms 13116 KB Output is correct
25 Correct 10 ms 12884 KB Output is correct
26 Correct 9 ms 12884 KB Output is correct
27 Correct 9 ms 12780 KB Output is correct
28 Correct 12 ms 13760 KB Output is correct
29 Correct 18 ms 15980 KB Output is correct
30 Correct 10 ms 13368 KB Output is correct
31 Correct 14 ms 14432 KB Output is correct
32 Correct 10 ms 13652 KB Output is correct
33 Correct 30 ms 19632 KB Output is correct
34 Correct 31 ms 19628 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12056 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 7 ms 11988 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 6 ms 11956 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 6 ms 11948 KB Output is correct
8 Correct 7 ms 11988 KB Output is correct
9 Correct 6 ms 11988 KB Output is correct
10 Correct 7 ms 12116 KB Output is correct
11 Correct 8 ms 12368 KB Output is correct
12 Correct 7 ms 12116 KB Output is correct
13 Correct 7 ms 12088 KB Output is correct
14 Correct 8 ms 12476 KB Output is correct
15 Correct 8 ms 12500 KB Output is correct
16 Correct 7 ms 12244 KB Output is correct
17 Correct 12 ms 12996 KB Output is correct
18 Correct 8 ms 12716 KB Output is correct
19 Correct 8 ms 12732 KB Output is correct
20 Correct 8 ms 12608 KB Output is correct
21 Correct 7 ms 12244 KB Output is correct
22 Correct 8 ms 12688 KB Output is correct
23 Correct 8 ms 12756 KB Output is correct
24 Correct 11 ms 13124 KB Output is correct
25 Correct 9 ms 12884 KB Output is correct
26 Correct 10 ms 12884 KB Output is correct
27 Correct 9 ms 12756 KB Output is correct
28 Correct 13 ms 13780 KB Output is correct
29 Correct 19 ms 15952 KB Output is correct
30 Correct 10 ms 13364 KB Output is correct
31 Correct 13 ms 14432 KB Output is correct
32 Correct 10 ms 13684 KB Output is correct
33 Correct 30 ms 19704 KB Output is correct
34 Correct 32 ms 19668 KB Output is correct
35 Correct 44 ms 19020 KB Output is correct
36 Correct 13 ms 13292 KB Output is correct
37 Correct 59 ms 23104 KB Output is correct
38 Correct 63 ms 23052 KB Output is correct
39 Correct 64 ms 23124 KB Output is correct
40 Correct 67 ms 23080 KB Output is correct
41 Correct 68 ms 22984 KB Output is correct
42 Correct 20 ms 13100 KB Output is correct
43 Correct 20 ms 13132 KB Output is correct
44 Correct 20 ms 12912 KB Output is correct
45 Correct 113 ms 40124 KB Output is correct
46 Correct 113 ms 40156 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12040 KB Output is correct
2 Correct 8 ms 11988 KB Output is correct
3 Correct 6 ms 12020 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 8 ms 11988 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 7 ms 11952 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 6 ms 11988 KB Output is correct
10 Correct 7 ms 12116 KB Output is correct
11 Correct 8 ms 12372 KB Output is correct
12 Correct 7 ms 12096 KB Output is correct
13 Correct 7 ms 11988 KB Output is correct
14 Correct 8 ms 12476 KB Output is correct
15 Correct 8 ms 12500 KB Output is correct
16 Correct 7 ms 12244 KB Output is correct
17 Correct 11 ms 12992 KB Output is correct
18 Correct 8 ms 12756 KB Output is correct
19 Correct 8 ms 12756 KB Output is correct
20 Correct 10 ms 12700 KB Output is correct
21 Correct 7 ms 12220 KB Output is correct
22 Correct 8 ms 12756 KB Output is correct
23 Correct 9 ms 12756 KB Output is correct
24 Correct 11 ms 13140 KB Output is correct
25 Correct 10 ms 12884 KB Output is correct
26 Correct 9 ms 12864 KB Output is correct
27 Correct 9 ms 12756 KB Output is correct
28 Correct 13 ms 13780 KB Output is correct
29 Correct 19 ms 15964 KB Output is correct
30 Correct 12 ms 13364 KB Output is correct
31 Correct 13 ms 14340 KB Output is correct
32 Correct 10 ms 13652 KB Output is correct
33 Correct 30 ms 19688 KB Output is correct
34 Correct 30 ms 19648 KB Output is correct
35 Correct 46 ms 19000 KB Output is correct
36 Correct 12 ms 13332 KB Output is correct
37 Correct 62 ms 23096 KB Output is correct
38 Correct 64 ms 23068 KB Output is correct
39 Correct 63 ms 22996 KB Output is correct
40 Correct 64 ms 22964 KB Output is correct
41 Correct 64 ms 23076 KB Output is correct
42 Correct 20 ms 13156 KB Output is correct
43 Correct 19 ms 13168 KB Output is correct
44 Correct 19 ms 12912 KB Output is correct
45 Correct 111 ms 40148 KB Output is correct
46 Correct 108 ms 40252 KB Output is correct
47 Correct 274 ms 59228 KB Output is correct
48 Correct 86 ms 30100 KB Output is correct
49 Correct 63 ms 25792 KB Output is correct
50 Correct 59 ms 26208 KB Output is correct
51 Correct 129 ms 36324 KB Output is correct
52 Correct 139 ms 38180 KB Output is correct
53 Correct 54 ms 24804 KB Output is correct
54 Correct 19 ms 20820 KB Output is correct
55 Correct 22 ms 21844 KB Output is correct
56 Correct 35 ms 22008 KB Output is correct
57 Correct 109 ms 43296 KB Output is correct
58 Correct 32 ms 22596 KB Output is correct
59 Correct 44 ms 24012 KB Output is correct
60 Correct 49 ms 25324 KB Output is correct
61 Correct 49 ms 24632 KB Output is correct
62 Correct 172 ms 47724 KB Output is correct
63 Correct 864 ms 159516 KB Output is correct
64 Correct 921 ms 182524 KB Output is correct
65 Runtime error 900 ms 262144 KB Execution killed with signal 11
66 Halted 0 ms 0 KB -