oj.uz

Submission #893812

# Submission time Handle Problem Language Result Execution time Memory
893812 2023-12-27T13:22:46 Z vjudge1 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 188 ms 42412 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
#define int long long

using i64 = long long;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, k; cin >> n >> k;
    vector <int> L(n), R(n);
    for ( int i = 0; i < n; i++ ){
        cin >> L[i] >> R[i];
    }
    { // compression
        vector <int> p_;
        for ( int i = 0; i < n; i++ ){
            p_.pb(L[i]);
            p_.pb(R[i]);
        }
        sort(all(p_));
        p_.resize(unique(all(p_)) - p_.begin());
        auto get = [&](int x){
            return lower_bound(all(p_), x) - p_.begin() + 1;
        };
        for ( int i = 0; i < n; i++ ){
            L[i] = get(L[i]);
            R[i] = get(R[i]);
        }
    }
    int m = n * 2;
    const int inf = m + 1;
    vector <int> qu(m + 1, inf);
    for ( int i = 0; i < n; i++ ){
        chmin(qu[L[i]], R[i]);
    }
    vector <vector<int>> up(20, vector <int> (m + 2, inf));
    for ( int i = m; i > 0; i-- ){
        up[0][i] = min(qu[i], up[0][i + 1]);
    }
    for ( int i = 1; i < 20; i++ ){
        for ( int j = 1; j <= m; j++ ){
            up[i][j] = up[i - 1][up[i - 1][j]];
        }
    }
    auto dp = [&](int l, int r){
        int cnt = 0;
        for ( int i = 19; i >= 0; i-- ){
            if ( up[i][l] <= r ){
                l = up[i][l];
                cnt |= 1 << i;
            }
        }
        return cnt;
    };
    int tot = dp(1, m);
    if ( tot < k ){
        return cout << "-1", 0;
    }
    set <pair<int,int>> st{{1, m}};
    vector <int> ans;
    for ( int i = 0; i < n; i++ ){
        auto it = prev(st.lower_bound({L[i] + 1, -1}));
        auto [l, r] = *it;
        if ( r >= R[i] ){
            int nxt = tot - dp(l, r) + dp(l, L[i]) + dp(R[i], r) + 1;
            if ( nxt >= k ){
                swap(nxt, tot);
                ans.pb(i);
                st.erase(it);
                st.insert({l, L[i]});
                st.insert({R[i], r});
            }
        }
    }
    for ( int i = 0; i < k; i++ ){
        cout << ans[i] + 1 << ln;
    }

    cout << '\n';
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 448 KB Output is correct
4 Correct 103 ms 41796 KB Output is correct
5 Correct 99 ms 41784 KB Output is correct
6 Correct 97 ms 41892 KB Output is correct
7 Correct 100 ms 41640 KB Output is correct
8 Correct 98 ms 41792 KB Output is correct
9 Correct 98 ms 41944 KB Output is correct
10 Correct 101 ms 41716 KB Output is correct
11 Correct 97 ms 41840 KB Output is correct
12 Correct 80 ms 39076 KB Output is correct
13 Correct 80 ms 39076 KB Output is correct
14 Correct 93 ms 39008 KB Output is correct
15 Correct 82 ms 39336 KB Output is correct
16 Correct 57 ms 36512 KB Output is correct
17 Correct 57 ms 36452 KB Output is correct
18 Correct 68 ms 36520 KB Output is correct
19 Correct 50 ms 36476 KB Output is correct
20 Correct 54 ms 36780 KB Output is correct
21 Correct 50 ms 36272 KB Output is correct
22 Correct 52 ms 36428 KB Output is correct
23 Correct 57 ms 36412 KB Output is correct
24 Correct 51 ms 36268 KB Output is correct
25 Correct 54 ms 36272 KB Output is correct
26 Correct 54 ms 36212 KB Output is correct
27 Correct 56 ms 36268 KB Output is correct
28 Correct 44 ms 36356 KB Output is correct
29 Correct 45 ms 36340 KB Output is correct
30 Correct 45 ms 36472 KB Output is correct
31 Correct 50 ms 36272 KB Output is correct
32 Correct 50 ms 36272 KB Output is correct
33 Correct 53 ms 36272 KB Output is correct
34 Correct 80 ms 39052 KB Output is correct
35 Correct 78 ms 38976 KB Output is correct
36 Correct 78 ms 38960 KB Output is correct
37 Correct 74 ms 38484 KB Output is correct
38 Correct 74 ms 38568 KB Output is correct
39 Correct 88 ms 38464 KB Output is correct
40 Correct 74 ms 38516 KB Output is correct
41 Correct 80 ms 38456 KB Output is correct
42 Correct 56 ms 36276 KB Output is correct
43 Correct 84 ms 38568 KB Output is correct
44 Correct 80 ms 38312 KB Output is correct
45 Correct 81 ms 38060 KB Output is correct
46 Correct 79 ms 38000 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 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 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 344 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 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 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 2 ms 1372 KB Output is correct
29 Correct 2 ms 1372 KB Output is correct
30 Correct 3 ms 1372 KB Output is correct
31 Correct 3 ms 1372 KB Output is correct
32 Correct 2 ms 1368 KB Output is correct
33 Correct 2 ms 1372 KB Output is correct
34 Correct 2 ms 1372 KB Output is correct
35 Correct 3 ms 1628 KB Output is correct
36 Correct 3 ms 1628 KB Output is correct
37 Correct 3 ms 1628 KB Output is correct
38 Correct 2 ms 1372 KB Output is correct
39 Correct 4 ms 1884 KB Output is correct
40 Correct 3 ms 1624 KB Output is correct
41 Correct 3 ms 1628 KB Output is correct
42 Correct 2 ms 1328 KB Output is correct
43 Correct 2 ms 1372 KB Output is correct
44 Correct 3 ms 1372 KB Output is correct
45 Correct 2 ms 1368 KB Output is correct
46 Correct 2 ms 1372 KB Output is correct
47 Correct 2 ms 1372 KB Output is correct
48 Correct 2 ms 1372 KB Output is correct
49 Correct 2 ms 1372 KB Output is correct
50 Correct 2 ms 1372 KB Output is correct
51 Correct 2 ms 1372 KB Output is correct
52 Correct 2 ms 1372 KB Output is correct
53 Correct 2 ms 1372 KB Output is correct
54 Correct 2 ms 1368 KB Output is correct
55 Correct 3 ms 1628 KB Output is correct
56 Correct 3 ms 1628 KB Output is correct
57 Correct 3 ms 1624 KB Output is correct
58 Correct 3 ms 1628 KB Output is correct
59 Correct 2 ms 1628 KB Output is correct
60 Correct 3 ms 1628 KB Output is correct
61 Correct 3 ms 1628 KB Output is correct
62 Correct 2 ms 1628 KB Output is correct
63 Correct 3 ms 1628 KB Output is correct
64 Correct 2 ms 1372 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 448 KB Output is correct
4 Correct 103 ms 41796 KB Output is correct
5 Correct 99 ms 41784 KB Output is correct
6 Correct 97 ms 41892 KB Output is correct
7 Correct 100 ms 41640 KB Output is correct
8 Correct 98 ms 41792 KB Output is correct
9 Correct 98 ms 41944 KB Output is correct
10 Correct 101 ms 41716 KB Output is correct
11 Correct 97 ms 41840 KB Output is correct
12 Correct 80 ms 39076 KB Output is correct
13 Correct 80 ms 39076 KB Output is correct
14 Correct 93 ms 39008 KB Output is correct
15 Correct 82 ms 39336 KB Output is correct
16 Correct 57 ms 36512 KB Output is correct
17 Correct 57 ms 36452 KB Output is correct
18 Correct 68 ms 36520 KB Output is correct
19 Correct 50 ms 36476 KB Output is correct
20 Correct 54 ms 36780 KB Output is correct
21 Correct 50 ms 36272 KB Output is correct
22 Correct 52 ms 36428 KB Output is correct
23 Correct 57 ms 36412 KB Output is correct
24 Correct 51 ms 36268 KB Output is correct
25 Correct 54 ms 36272 KB Output is correct
26 Correct 54 ms 36212 KB Output is correct
27 Correct 56 ms 36268 KB Output is correct
28 Correct 44 ms 36356 KB Output is correct
29 Correct 45 ms 36340 KB Output is correct
30 Correct 45 ms 36472 KB Output is correct
31 Correct 50 ms 36272 KB Output is correct
32 Correct 50 ms 36272 KB Output is correct
33 Correct 53 ms 36272 KB Output is correct
34 Correct 80 ms 39052 KB Output is correct
35 Correct 78 ms 38976 KB Output is correct
36 Correct 78 ms 38960 KB Output is correct
37 Correct 74 ms 38484 KB Output is correct
38 Correct 74 ms 38568 KB Output is correct
39 Correct 88 ms 38464 KB Output is correct
40 Correct 74 ms 38516 KB Output is correct
41 Correct 80 ms 38456 KB Output is correct
42 Correct 56 ms 36276 KB Output is correct
43 Correct 84 ms 38568 KB Output is correct
44 Correct 80 ms 38312 KB Output is correct
45 Correct 81 ms 38060 KB Output is correct
46 Correct 79 ms 38000 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 0 ms 348 KB Output is correct
69 Correct 1 ms 348 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 0 ms 344 KB Output is correct
74 Correct 2 ms 1372 KB Output is correct
75 Correct 2 ms 1372 KB Output is correct
76 Correct 3 ms 1372 KB Output is correct
77 Correct 3 ms 1372 KB Output is correct
78 Correct 2 ms 1368 KB Output is correct
79 Correct 2 ms 1372 KB Output is correct
80 Correct 2 ms 1372 KB Output is correct
81 Correct 3 ms 1628 KB Output is correct
82 Correct 3 ms 1628 KB Output is correct
83 Correct 3 ms 1628 KB Output is correct
84 Correct 2 ms 1372 KB Output is correct
85 Correct 4 ms 1884 KB Output is correct
86 Correct 3 ms 1624 KB Output is correct
87 Correct 3 ms 1628 KB Output is correct
88 Correct 2 ms 1328 KB Output is correct
89 Correct 2 ms 1372 KB Output is correct
90 Correct 3 ms 1372 KB Output is correct
91 Correct 2 ms 1368 KB Output is correct
92 Correct 2 ms 1372 KB Output is correct
93 Correct 2 ms 1372 KB Output is correct
94 Correct 2 ms 1372 KB Output is correct
95 Correct 2 ms 1372 KB Output is correct
96 Correct 2 ms 1372 KB Output is correct
97 Correct 2 ms 1372 KB Output is correct
98 Correct 2 ms 1372 KB Output is correct
99 Correct 2 ms 1372 KB Output is correct
100 Correct 2 ms 1368 KB Output is correct
101 Correct 3 ms 1628 KB Output is correct
102 Correct 3 ms 1628 KB Output is correct
103 Correct 3 ms 1624 KB Output is correct
104 Correct 3 ms 1628 KB Output is correct
105 Correct 2 ms 1628 KB Output is correct
106 Correct 3 ms 1628 KB Output is correct
107 Correct 3 ms 1628 KB Output is correct
108 Correct 2 ms 1628 KB Output is correct
109 Correct 3 ms 1628 KB Output is correct
110 Correct 2 ms 1372 KB Output is correct
111 Correct 77 ms 36468 KB Output is correct
112 Correct 78 ms 36584 KB Output is correct
113 Correct 74 ms 36272 KB Output is correct
114 Correct 70 ms 36272 KB Output is correct
115 Correct 69 ms 36216 KB Output is correct
116 Correct 68 ms 36220 KB Output is correct
117 Correct 71 ms 36308 KB Output is correct
118 Correct 188 ms 41892 KB Output is correct
119 Correct 172 ms 41824 KB Output is correct
120 Correct 154 ms 39012 KB Output is correct
121 Correct 65 ms 36220 KB Output is correct
122 Correct 139 ms 39116 KB Output is correct
123 Correct 139 ms 38824 KB Output is correct
124 Correct 136 ms 38896 KB Output is correct
125 Correct 64 ms 36376 KB Output is correct
126 Correct 95 ms 36468 KB Output is correct
127 Correct 91 ms 36464 KB Output is correct
128 Correct 86 ms 36516 KB Output is correct
129 Correct 65 ms 36272 KB Output is correct
130 Correct 79 ms 36272 KB Output is correct
131 Correct 77 ms 36456 KB Output is correct
132 Correct 75 ms 36272 KB Output is correct
133 Correct 70 ms 36268 KB Output is correct
134 Correct 80 ms 36264 KB Output is correct
135 Correct 74 ms 36276 KB Output is correct
136 Correct 71 ms 36296 KB Output is correct
137 Correct 69 ms 36268 KB Output is correct
138 Correct 82 ms 36268 KB Output is correct
139 Correct 74 ms 36512 KB Output is correct
140 Correct 71 ms 36456 KB Output is correct
141 Correct 67 ms 36376 KB Output is correct
142 Correct 97 ms 42340 KB Output is correct
143 Correct 96 ms 42404 KB Output is correct
144 Correct 98 ms 42348 KB Output is correct
145 Correct 104 ms 42404 KB Output is correct
146 Correct 98 ms 42404 KB Output is correct
147 Correct 101 ms 42296 KB Output is correct
148 Correct 99 ms 42408 KB Output is correct
149 Correct 97 ms 42376 KB Output is correct
150 Correct 96 ms 42148 KB Output is correct
151 Correct 115 ms 42412 KB Output is correct
152 Correct 43 ms 36268 KB Output is correct
153 Correct 98 ms 42408 KB Output is correct
154 Correct 100 ms 42348 KB Output is correct
155 Correct 97 ms 42404 KB Output is correct
156 Correct 98 ms 42404 KB Output is correct
157 Correct 102 ms 42388 KB Output is correct
158 Correct 96 ms 42200 KB Output is correct
159 Correct 96 ms 42176 KB Output is correct
160 Correct 51 ms 36456 KB Output is correct
161 Correct 124 ms 38564 KB Output is correct
162 Correct 123 ms 38516 KB Output is correct
163 Correct 128 ms 38568 KB Output is correct
164 Correct 142 ms 38552 KB Output is correct
165 Correct 126 ms 38508 KB Output is correct
166 Correct 48 ms 36332 KB Output is correct
167 Correct 94 ms 38520 KB Output is correct
168 Correct 76 ms 38316 KB Output is correct
169 Correct 76 ms 38056 KB Output is correct
170 Correct 78 ms 38052 KB Output is correct
171 Correct 72 ms 38568 KB Output is correct
172 Correct 79 ms 39092 KB Output is correct
173 Correct 135 ms 38504 KB Output is correct
174 Correct 122 ms 38516 KB Output is correct
175 Correct 120 ms 38500 KB Output is correct
176 Correct 121 ms 37988 KB Output is correct