oj.uz

Submission #641527

# Submission time Handle Problem Language Result Execution time Memory
641527 2022-09-16T23:46:49 Z skittles1412 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 139 ms 23584 KB 
#include "bits/extc++.h"

using namespace std;

template <typename T>
void dbgh(const T& t) {
    cerr << t << endl;
}

template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
    cerr << t << " | ";
    dbgh(u...);
}

#ifdef DEBUG
#define dbg(...)                                           \
    cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]" \
         << ": ";                                          \
    dbgh(__VA_ARGS__)
#else
#define cerr   \
    if (false) \
    cerr
#define dbg(...)
#endif

#define endl "\n"
#define long int64_t
#define sz(x) int(std::size(x))

constexpr int maxn = 2e5 + 5, logn = 18;

int lift[logn][maxn];

int ccomp(vector<int*>&& arr) {
    sort(begin(arr), end(arr), [&](const int* a, const int* b) -> bool {
        return *a < *b;
    });
    int j = 0;
    for (int i = 0, prv; i < sz(arr); i++) {
        j += i && prv != *arr[i];
        prv = *arr[i];
        *arr[i] = j;
    }
    return j + 1;
}

void solve() {
    int n, kv;
    cin >> n >> kv;
    int arr[n][2];
    for (auto& [l, r] : arr) {
        cin >> l >> r;
    }
    vector<int*> comp;
    for (auto& [l, r] : arr) {
        comp.emplace_back(&l);
        comp.emplace_back(&r);
    }
    int m = ccomp(std::move(comp));
    fill(lift[0], lift[0] + m + 1, m);
    for (auto& [x, y] : arr) {
        lift[0][x] = min(lift[0][x], y);
    }
    for (int i = m - 1; i >= 0; i--) {
        lift[0][i] = min(lift[0][i], lift[0][i + 1]);
    }
    for (int i = 1; i < logn; i++) {
        for (int j = 0; j <= m; j++) {
            lift[i][j] = lift[i - 1][lift[i - 1][j]];
        }
    }
    auto query = [&](int l, int r) -> int {
        int ans = 0;
        for (int i = logn - 1; i >= 0; i--) {
            if (lift[i][l] <= r) {
                ans |= 1 << i;
                l = lift[i][l];
            }
        }
        return ans;
    };
    int cans = query(0, m - 1);
    if (cans < kv) {
        cout << -1 << endl;
        return;
    }
    set<pair<int, int>> segs;
    segs.emplace(-1, 0);
    segs.emplace(m - 1, m);
    for (int i = 0; i < n && sz(segs) - 2 < kv; i++) {
        auto& [l, r] = arr[i];
        auto it = segs.lower_bound({l, r});
        int qr = it->first, ql = (--it)->second;
        if (ql <= l && r <= qr) {
            int nans = cans - query(ql, qr) + query(ql, l) + query(r, qr);
            if (nans + sz(segs) - 1 >= kv) {
                cans = nans;
                segs.emplace(l, r);
                cout << i + 1 << endl;
            }
        }
    }
}

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    cin.exceptions(ios::failbit);
    solve();
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 86 ms 23580 KB Output is correct
5 Correct 95 ms 23308 KB Output is correct
6 Correct 79 ms 22988 KB Output is correct
7 Correct 73 ms 22536 KB Output is correct
8 Correct 85 ms 23584 KB Output is correct
9 Correct 110 ms 23360 KB Output is correct
10 Correct 86 ms 23080 KB Output is correct
11 Correct 73 ms 22532 KB Output is correct
12 Correct 67 ms 21744 KB Output is correct
13 Correct 66 ms 21512 KB Output is correct
14 Correct 71 ms 21316 KB Output is correct
15 Correct 64 ms 21072 KB Output is correct
16 Correct 45 ms 19380 KB Output is correct
17 Correct 45 ms 19244 KB Output is correct
18 Correct 51 ms 19256 KB Output is correct
19 Correct 45 ms 18756 KB Output is correct
20 Correct 48 ms 18740 KB Output is correct
21 Correct 43 ms 18748 KB Output is correct
22 Correct 40 ms 18748 KB Output is correct
23 Correct 41 ms 18736 KB Output is correct
24 Correct 40 ms 18756 KB Output is correct
25 Correct 49 ms 18868 KB Output is correct
26 Correct 43 ms 18740 KB Output is correct
27 Correct 43 ms 18852 KB Output is correct
28 Correct 34 ms 18828 KB Output is correct
29 Correct 33 ms 18740 KB Output is correct
30 Correct 34 ms 18744 KB Output is correct
31 Correct 37 ms 18744 KB Output is correct
32 Correct 45 ms 18744 KB Output is correct
33 Correct 44 ms 18752 KB Output is correct
34 Correct 55 ms 20396 KB Output is correct
35 Correct 46 ms 19856 KB Output is correct
36 Correct 43 ms 19244 KB Output is correct
37 Correct 65 ms 21324 KB Output is correct
38 Correct 63 ms 21304 KB Output is correct
39 Correct 60 ms 21012 KB Output is correct
40 Correct 58 ms 20980 KB Output is correct
41 Correct 70 ms 20864 KB Output is correct
42 Correct 53 ms 18736 KB Output is correct
43 Correct 81 ms 21192 KB Output is correct
44 Correct 79 ms 21048 KB Output is correct
45 Correct 74 ms 20900 KB Output is correct
46 Correct 75 ms 20868 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 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 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 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 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 2 ms 980 KB Output is correct
29 Correct 2 ms 916 KB Output is correct
30 Correct 2 ms 980 KB Output is correct
31 Correct 2 ms 980 KB Output is correct
32 Correct 2 ms 980 KB Output is correct
33 Correct 2 ms 980 KB Output is correct
34 Correct 2 ms 980 KB Output is correct
35 Correct 3 ms 1108 KB Output is correct
36 Correct 3 ms 1108 KB Output is correct
37 Correct 3 ms 980 KB Output is correct
38 Correct 3 ms 980 KB Output is correct
39 Correct 3 ms 1044 KB Output is correct
40 Correct 4 ms 980 KB Output is correct
41 Correct 3 ms 980 KB Output is correct
42 Correct 2 ms 980 KB Output is correct
43 Correct 3 ms 980 KB Output is correct
44 Correct 2 ms 980 KB Output is correct
45 Correct 2 ms 980 KB Output is correct
46 Correct 2 ms 980 KB Output is correct
47 Correct 2 ms 980 KB Output is correct
48 Correct 2 ms 980 KB Output is correct
49 Correct 3 ms 980 KB Output is correct
50 Correct 2 ms 980 KB Output is correct
51 Correct 2 ms 980 KB Output is correct
52 Correct 2 ms 980 KB Output is correct
53 Correct 2 ms 980 KB Output is correct
54 Correct 2 ms 976 KB Output is correct
55 Correct 3 ms 852 KB Output is correct
56 Correct 3 ms 852 KB Output is correct
57 Correct 3 ms 848 KB Output is correct
58 Correct 4 ms 852 KB Output is correct
59 Correct 2 ms 888 KB Output is correct
60 Correct 2 ms 852 KB Output is correct
61 Correct 2 ms 852 KB Output is correct
62 Correct 2 ms 852 KB Output is correct
63 Correct 3 ms 852 KB Output is correct
64 Correct 2 ms 856 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 86 ms 23580 KB Output is correct
5 Correct 95 ms 23308 KB Output is correct
6 Correct 79 ms 22988 KB Output is correct
7 Correct 73 ms 22536 KB Output is correct
8 Correct 85 ms 23584 KB Output is correct
9 Correct 110 ms 23360 KB Output is correct
10 Correct 86 ms 23080 KB Output is correct
11 Correct 73 ms 22532 KB Output is correct
12 Correct 67 ms 21744 KB Output is correct
13 Correct 66 ms 21512 KB Output is correct
14 Correct 71 ms 21316 KB Output is correct
15 Correct 64 ms 21072 KB Output is correct
16 Correct 45 ms 19380 KB Output is correct
17 Correct 45 ms 19244 KB Output is correct
18 Correct 51 ms 19256 KB Output is correct
19 Correct 45 ms 18756 KB Output is correct
20 Correct 48 ms 18740 KB Output is correct
21 Correct 43 ms 18748 KB Output is correct
22 Correct 40 ms 18748 KB Output is correct
23 Correct 41 ms 18736 KB Output is correct
24 Correct 40 ms 18756 KB Output is correct
25 Correct 49 ms 18868 KB Output is correct
26 Correct 43 ms 18740 KB Output is correct
27 Correct 43 ms 18852 KB Output is correct
28 Correct 34 ms 18828 KB Output is correct
29 Correct 33 ms 18740 KB Output is correct
30 Correct 34 ms 18744 KB Output is correct
31 Correct 37 ms 18744 KB Output is correct
32 Correct 45 ms 18744 KB Output is correct
33 Correct 44 ms 18752 KB Output is correct
34 Correct 55 ms 20396 KB Output is correct
35 Correct 46 ms 19856 KB Output is correct
36 Correct 43 ms 19244 KB Output is correct
37 Correct 65 ms 21324 KB Output is correct
38 Correct 63 ms 21304 KB Output is correct
39 Correct 60 ms 21012 KB Output is correct
40 Correct 58 ms 20980 KB Output is correct
41 Correct 70 ms 20864 KB Output is correct
42 Correct 53 ms 18736 KB Output is correct
43 Correct 81 ms 21192 KB Output is correct
44 Correct 79 ms 21048 KB Output is correct
45 Correct 74 ms 20900 KB Output is correct
46 Correct 75 ms 20868 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 328 KB Output is correct
55 Correct 0 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 1 ms 340 KB Output is correct
67 Correct 1 ms 340 KB Output is correct
68 Correct 1 ms 340 KB Output is correct
69 Correct 1 ms 340 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 0 ms 340 KB Output is correct
72 Correct 0 ms 340 KB Output is correct
73 Correct 0 ms 340 KB Output is correct
74 Correct 2 ms 980 KB Output is correct
75 Correct 2 ms 916 KB Output is correct
76 Correct 2 ms 980 KB Output is correct
77 Correct 2 ms 980 KB Output is correct
78 Correct 2 ms 980 KB Output is correct
79 Correct 2 ms 980 KB Output is correct
80 Correct 2 ms 980 KB Output is correct
81 Correct 3 ms 1108 KB Output is correct
82 Correct 3 ms 1108 KB Output is correct
83 Correct 3 ms 980 KB Output is correct
84 Correct 3 ms 980 KB Output is correct
85 Correct 3 ms 1044 KB Output is correct
86 Correct 4 ms 980 KB Output is correct
87 Correct 3 ms 980 KB Output is correct
88 Correct 2 ms 980 KB Output is correct
89 Correct 3 ms 980 KB Output is correct
90 Correct 2 ms 980 KB Output is correct
91 Correct 2 ms 980 KB Output is correct
92 Correct 2 ms 980 KB Output is correct
93 Correct 2 ms 980 KB Output is correct
94 Correct 2 ms 980 KB Output is correct
95 Correct 3 ms 980 KB Output is correct
96 Correct 2 ms 980 KB Output is correct
97 Correct 2 ms 980 KB Output is correct
98 Correct 2 ms 980 KB Output is correct
99 Correct 2 ms 980 KB Output is correct
100 Correct 2 ms 976 KB Output is correct
101 Correct 3 ms 852 KB Output is correct
102 Correct 3 ms 852 KB Output is correct
103 Correct 3 ms 848 KB Output is correct
104 Correct 4 ms 852 KB Output is correct
105 Correct 2 ms 888 KB Output is correct
106 Correct 2 ms 852 KB Output is correct
107 Correct 2 ms 852 KB Output is correct
108 Correct 2 ms 852 KB Output is correct
109 Correct 3 ms 852 KB Output is correct
110 Correct 2 ms 856 KB Output is correct
111 Correct 54 ms 18756 KB Output is correct
112 Correct 52 ms 18752 KB Output is correct
113 Correct 53 ms 18756 KB Output is correct
114 Correct 58 ms 18820 KB Output is correct
115 Correct 51 ms 18760 KB Output is correct
116 Correct 53 ms 18736 KB Output is correct
117 Correct 47 ms 18860 KB Output is correct
118 Correct 135 ms 23516 KB Output is correct
119 Correct 139 ms 23080 KB Output is correct
120 Correct 89 ms 21028 KB Output is correct
121 Correct 46 ms 18824 KB Output is correct
122 Correct 106 ms 21632 KB Output is correct
123 Correct 133 ms 21392 KB Output is correct
124 Correct 85 ms 21044 KB Output is correct
125 Correct 46 ms 18756 KB Output is correct
126 Correct 76 ms 19316 KB Output is correct
127 Correct 85 ms 19228 KB Output is correct
128 Correct 72 ms 19124 KB Output is correct
129 Correct 45 ms 18708 KB Output is correct
130 Correct 59 ms 18756 KB Output is correct
131 Correct 56 ms 18700 KB Output is correct
132 Correct 69 ms 18736 KB Output is correct
133 Correct 49 ms 18816 KB Output is correct
134 Correct 54 ms 18816 KB Output is correct
135 Correct 53 ms 18728 KB Output is correct
136 Correct 51 ms 18752 KB Output is correct
137 Correct 48 ms 18820 KB Output is correct
138 Correct 56 ms 18852 KB Output is correct
139 Correct 52 ms 18744 KB Output is correct
140 Correct 48 ms 18728 KB Output is correct
141 Correct 47 ms 18756 KB Output is correct
142 Correct 88 ms 16940 KB Output is correct
143 Correct 81 ms 16948 KB Output is correct
144 Correct 83 ms 16916 KB Output is correct
145 Correct 76 ms 17020 KB Output is correct
146 Correct 70 ms 16888 KB Output is correct
147 Correct 72 ms 16776 KB Output is correct
148 Correct 74 ms 16692 KB Output is correct
149 Correct 70 ms 16600 KB Output is correct
150 Correct 74 ms 16436 KB Output is correct
151 Correct 61 ms 15932 KB Output is correct
152 Correct 29 ms 11912 KB Output is correct
153 Correct 77 ms 17032 KB Output is correct
154 Correct 74 ms 16804 KB Output is correct
155 Correct 68 ms 16816 KB Output is correct
156 Correct 69 ms 16636 KB Output is correct
157 Correct 68 ms 16520 KB Output is correct
158 Correct 68 ms 16492 KB Output is correct
159 Correct 62 ms 15924 KB Output is correct
160 Correct 29 ms 11828 KB Output is correct
161 Correct 92 ms 17872 KB Output is correct
162 Correct 99 ms 17728 KB Output is correct
163 Correct 87 ms 17640 KB Output is correct
164 Correct 82 ms 17472 KB Output is correct
165 Correct 79 ms 17352 KB Output is correct
166 Correct 38 ms 18740 KB Output is correct
167 Correct 70 ms 21184 KB Output is correct
168 Correct 85 ms 21124 KB Output is correct
169 Correct 68 ms 20992 KB Output is correct
170 Correct 63 ms 20912 KB Output is correct
171 Correct 58 ms 20656 KB Output is correct
172 Correct 64 ms 21244 KB Output is correct
173 Correct 108 ms 14332 KB Output is correct
174 Correct 98 ms 14256 KB Output is correct
175 Correct 91 ms 14264 KB Output is correct
176 Correct 79 ms 13740 KB Output is correct