oj.uz

Submission #915620

# Submission time Handle Problem Language Result Execution time Memory
915620 2024-01-24T10:59:40 Z vjudge1 Treatment Project (JOI20_treatment) C++17
100 / 100
 316 ms 71756 KB 
// https://oj.uz/problem/view/JOI20_treatment

#include <bits/stdc++.h>
using namespace std;

namespace std {

template <int D, typename T>
struct Vec : public vector<Vec<D - 1, T>> {
        static_assert(D >= 1, "Dimension must be positive");
        template <typename... Args>
        Vec(int n = 0, Args... args) : vector<Vec<D - 1, T>>(n, Vec<D - 1, T>(args...)) {}
};

template <typename T>
struct Vec<1, T> : public vector<T> {
        Vec(int n = 0, T val = T()) : std::vector<T>(n, val) {}
};

/* Example
    Vec<4, int64_t> f(n, k, 2, 2); // = f[n][k][2][2];
    Vec<2, int> adj(n); // graph
*/

template <class Fun>
class y_combinator_result {
        Fun fun_;

       public:
        template <class T>
        explicit y_combinator_result(T &&fun) : fun_(std::forward<T>(fun)) {}

        template <class... Args>
        decltype(auto) operator()(Args &&...args) {
                return fun_(std::ref(*this), std::forward<Args>(args)...);
        }
};

template <class Fun>
decltype(auto) y_combinator(Fun &&fun) {
        return y_combinator_result<std::decay_t<Fun>>(std::forward<Fun>(fun));
}

/* Example
    auto fun = y_combinator([&](auto self, int x) -> void {
        self(x + 1);
    });
*/

}  // namespace std

vector<int> c;
vector<int64_t> d;
priority_queue<pair<int64_t, int>> pq;

struct segment_tree {
        int n;
        vector<vector<pair<int, int>>> val;
        vector<int> done;
        segment_tree(int n, const vector<pair<int, int>> &a) : n(n), val(n * 4), done(n, 0) {
                build(1, 0, n - 1, a);
                rev(1, 0, n - 1);
        }

        void build(int v, int l, int r, const vector<pair<int, int>> &a) {
                if (l == r) {
                        val[v] = {a[l]};
                        return;
                }
                int mid = (l + r) / 2;
                build(v * 2, l, mid, a);
                build(v * 2 + 1, mid + 1, r, a);
                merge(val[v * 2].begin(), val[v * 2].end(), val[v * 2 + 1].begin(), val[v * 2 + 1].end(),
                      back_inserter(val[v]));
        }

        void rev(int v, int l, int r) {
                reverse(val[v].begin(), val[v].end());
                if (l == r) return;
                int mid = (l + r) / 2;
                rev(v * 2, l, mid);
                rev(v * 2 + 1, mid + 1, r);
        }

        void update(int l, int r, int x, int64_t du) {
                update(1, 0, n - 1, l, r, x, du);
        }

        void update(int v, int l, int r, int s, int t, int x, int64_t du) {
                if (l > t || r < s) return;
                if (s <= l && r <= t) {
                        while (val[v].size() && val[v].back().first <= x) {
                                auto [value, index] = val[v].back();
                                val[v].pop_back();
                                if (done[index]) continue;
                                done[index] = 1;
                                if (d[index] > du + c[index]) {
                                        d[index] = du + c[index];
                                        pq.emplace(-d[index], index);
                                }
                        }
                        return;
                }
                int mid = (l + r) / 2;
                update(v * 2, l, mid, s, t, x, du);
                update(v * 2 + 1, mid + 1, r, s, t, x, du);
        }
};

int32_t main() {
        ios_base::sync_with_stdio(0);
        cin.tie(0);

        int n, m;
        cin >> n >> m;
        vector<int> l(m), r(m), t(m);
        c.resize(m);
        for (int i = 0; i < m; i++) cin >> t[i] >> l[i] >> r[i] >> c[i];
        for (int i = 0; i < m; i++) l[i]--;
        d.assign(m, 1e18);
        for (int i = 0; i < m; i++) {
                if (l[i] == 0) {
                        d[i] = c[i];
                        pq.emplace(-d[i], i);
                }
        }

        vector<pair<int, int>> tmp(m);

        for (int i = 0; i < m; i++) tmp[i] = make_pair(l[i] + t[i], i);
        sort(tmp.begin(), tmp.end(), [&](auto a, auto b) { return t[a.second] < t[b.second]; });
        segment_tree seg_less(m, tmp);

        for (int i = 0; i < m; i++) tmp[i] = make_pair(l[i] - t[i], i);
        sort(tmp.begin(), tmp.end(), [&](auto a, auto b) { return t[a.second] < t[b.second]; });
        segment_tree seg_greater(m, tmp);

        vector<int> ord(m);
        iota(ord.begin(), ord.end(), 0);
        sort(ord.begin(), ord.end(), [&](auto a, auto b) { return t[a] < t[b]; });
        vector<int> p(m);
        for (int i = 0; i < m; i++) p[ord[i]] = i;

        // if t[j] >= t[i] : l[j] <= r[i] - (t[j] - t[i])
        // l[j] + t[j] <= r[i] + t[i]
        // if t[j] <= t[i] : l[j] <= r[i] - (t[i] - t[j])
        // l[j] - t[j] <= r[i] - t[i]

        while (pq.size()) {
                auto [du, j] = pq.top();
                pq.pop();
                du = -du;
                if (du != d[j]) continue;
                if (r[j] == n) {
                        cout << du;
                        return 0;
                }
                seg_less.update(p[j], m - 1, r[j] + t[j], du);
                seg_greater.update(0, p[j], r[j] - t[j], du);
        }
        cout << -1;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 260 ms 68288 KB Output is correct
2 Correct 177 ms 68436 KB Output is correct
3 Correct 213 ms 68556 KB Output is correct
4 Correct 226 ms 68520 KB Output is correct
5 Correct 120 ms 70852 KB Output is correct
6 Correct 190 ms 68440 KB Output is correct
7 Correct 175 ms 68432 KB Output is correct
8 Correct 107 ms 68296 KB Output is correct
9 Correct 113 ms 68368 KB Output is correct
10 Correct 107 ms 68296 KB Output is correct
11 Correct 124 ms 70864 KB Output is correct
12 Correct 129 ms 70868 KB Output is correct
13 Correct 168 ms 70964 KB Output is correct
14 Correct 177 ms 71240 KB Output is correct
15 Correct 274 ms 68444 KB Output is correct
16 Correct 259 ms 68436 KB Output is correct
17 Correct 264 ms 67456 KB Output is correct
18 Correct 120 ms 70104 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 456 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 460 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 0 ms 348 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 456 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 460 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 9 ms 3932 KB Output is correct
21 Correct 9 ms 3588 KB Output is correct
22 Correct 8 ms 3672 KB Output is correct
23 Correct 7 ms 3676 KB Output is correct
24 Correct 7 ms 3676 KB Output is correct
25 Correct 9 ms 3676 KB Output is correct
26 Correct 10 ms 3676 KB Output is correct
27 Correct 8 ms 3676 KB Output is correct
28 Correct 7 ms 3716 KB Output is correct
29 Correct 8 ms 3792 KB Output is correct
30 Correct 6 ms 3676 KB Output is correct
31 Correct 6 ms 3676 KB Output is correct
32 Correct 7 ms 3672 KB Output is correct
33 Correct 7 ms 3676 KB Output is correct
34 Correct 9 ms 3772 KB Output is correct
35 Correct 6 ms 3720 KB Output is correct
36 Correct 6 ms 3712 KB Output is correct
37 Correct 8 ms 3672 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 260 ms 68288 KB Output is correct
2 Correct 177 ms 68436 KB Output is correct
3 Correct 213 ms 68556 KB Output is correct
4 Correct 226 ms 68520 KB Output is correct
5 Correct 120 ms 70852 KB Output is correct
6 Correct 190 ms 68440 KB Output is correct
7 Correct 175 ms 68432 KB Output is correct
8 Correct 107 ms 68296 KB Output is correct
9 Correct 113 ms 68368 KB Output is correct
10 Correct 107 ms 68296 KB Output is correct
11 Correct 124 ms 70864 KB Output is correct
12 Correct 129 ms 70868 KB Output is correct
13 Correct 168 ms 70964 KB Output is correct
14 Correct 177 ms 71240 KB Output is correct
15 Correct 274 ms 68444 KB Output is correct
16 Correct 259 ms 68436 KB Output is correct
17 Correct 264 ms 67456 KB Output is correct
18 Correct 120 ms 70104 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 456 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 460 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 460 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 9 ms 3932 KB Output is correct
39 Correct 9 ms 3588 KB Output is correct
40 Correct 8 ms 3672 KB Output is correct
41 Correct 7 ms 3676 KB Output is correct
42 Correct 7 ms 3676 KB Output is correct
43 Correct 9 ms 3676 KB Output is correct
44 Correct 10 ms 3676 KB Output is correct
45 Correct 8 ms 3676 KB Output is correct
46 Correct 7 ms 3716 KB Output is correct
47 Correct 8 ms 3792 KB Output is correct
48 Correct 6 ms 3676 KB Output is correct
49 Correct 6 ms 3676 KB Output is correct
50 Correct 7 ms 3672 KB Output is correct
51 Correct 7 ms 3676 KB Output is correct
52 Correct 9 ms 3772 KB Output is correct
53 Correct 6 ms 3720 KB Output is correct
54 Correct 6 ms 3712 KB Output is correct
55 Correct 8 ms 3672 KB Output is correct
56 Correct 195 ms 68812 KB Output is correct
57 Correct 210 ms 69068 KB Output is correct
58 Correct 216 ms 67780 KB Output is correct
59 Correct 206 ms 67916 KB Output is correct
60 Correct 235 ms 68600 KB Output is correct
61 Correct 208 ms 67536 KB Output is correct
62 Correct 197 ms 68768 KB Output is correct
63 Correct 176 ms 68556 KB Output is correct
64 Correct 178 ms 68552 KB Output is correct
65 Correct 306 ms 68664 KB Output is correct
66 Correct 215 ms 68752 KB Output is correct
67 Correct 253 ms 69316 KB Output is correct
68 Correct 242 ms 69204 KB Output is correct
69 Correct 223 ms 69060 KB Output is correct
70 Correct 262 ms 69060 KB Output is correct
71 Correct 252 ms 69064 KB Output is correct
72 Correct 240 ms 69212 KB Output is correct
73 Correct 269 ms 69064 KB Output is correct
74 Correct 137 ms 69312 KB Output is correct
75 Correct 159 ms 69208 KB Output is correct
76 Correct 159 ms 71448 KB Output is correct
77 Correct 165 ms 70564 KB Output is correct
78 Correct 231 ms 71364 KB Output is correct
79 Correct 300 ms 69316 KB Output is correct
80 Correct 313 ms 68812 KB Output is correct
81 Correct 156 ms 69068 KB Output is correct
82 Correct 292 ms 67952 KB Output is correct
83 Correct 307 ms 68292 KB Output is correct
84 Correct 316 ms 68292 KB Output is correct
85 Correct 227 ms 69080 KB Output is correct
86 Correct 250 ms 69220 KB Output is correct
87 Correct 254 ms 69468 KB Output is correct
88 Correct 264 ms 69328 KB Output is correct
89 Correct 241 ms 69064 KB Output is correct
90 Correct 175 ms 71624 KB Output is correct
91 Correct 150 ms 69068 KB Output is correct
92 Correct 256 ms 69060 KB Output is correct
93 Correct 292 ms 69208 KB Output is correct
94 Correct 279 ms 69060 KB Output is correct
95 Correct 268 ms 69184 KB Output is correct
96 Correct 155 ms 70344 KB Output is correct
97 Correct 159 ms 71556 KB Output is correct
98 Correct 161 ms 71756 KB Output is correct
99 Correct 157 ms 71724 KB Output is correct
100 Correct 153 ms 71752 KB Output is correct
101 Correct 169 ms 71736 KB Output is correct
102 Correct 162 ms 71612 KB Output is correct
103 Correct 202 ms 69060 KB Output is correct