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Submission #529929

# Submission time Handle Problem Language Result Execution time Memory
529929 2022-02-24T05:21:49 Z ajpiano Event Hopping 2 (JOI21_event2) C++17
100 / 100
 155 ms 17356 KB 
#include <bits/stdc++.h>

using namespace std;

#define f first
#define s second

typedef long long ll;
typedef pair<int,int> pi;

const int large = 1e5+5;
const int lg = 18;

const int inf  = 1e9+5;

int blift[large][lg];

vector<pi> range;

int banc(int start, int eval){
    int ans = 0;
    for(int i = lg-1; i >= 0; i--){
        int x = blift[start][i];
        if(range[x].s <= eval){
            ans += 1<<i; start = x;
        }
    }
    return ans;
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n,k; cin >> n >> k;
    range.resize(n+2);
    vector<pi> lsort, rsort;
    for(int i = 1; i <= n; i++){
        int l,r; cin >> l >> r;
        range[i].f = l, range[i].s = r;
        lsort.push_back({l,i});
        rsort.push_back({r,i});
    }
    range[n+1] = {inf, inf+5};
    range[0] = {-1, 0};
    sort(lsort.begin(), lsort.end(), greater<pi>());
    sort(rsort.begin(), rsort.end(), greater<pi>());
    pi best = {inf, n+1};
    int ptr = 0;
    for(auto &a: rsort){
        for(; ptr < n && lsort[ptr].f >= a.f; ptr++){
            int i = lsort[ptr].s;
            best = min(best, {range[i].s,i});
        }
        blift[a.s][0] = best.s;
    }
    for(; ptr < n; ptr++){
        int i = lsort[ptr].s;
        best = min(best, {range[i].s,i});
    }
    blift[0][0] = best.s;
    blift[n+1][0] = n+1;
    for(int i = 1; i < lg; i++)
        for(int j = 0; j <= n+1; j++)
            blift[j][i] = blift[blift[j][i-1]][i-1];
    set<pi> cur; //l, i
    int csz = 0;
    int cmax = banc(0, inf);
    vector<int> ans;
    cur.insert({range[0].f, 0});
    cur.insert({range[n+1].f, n+1});

    for(int i = 1; i <= n && csz < k; i++){
        //check for fit
        auto it = cur.lower_bound({range[i].f,-1});
        int indr = it->s;
        int indl = prev(it)->s;
        if(range[indl].s > range[i].f || range[indr].f < range[i].s) continue;

        //check to make sure at least k
        int pre = banc(indl, range[indr].f);
        int ne = banc(indl, range[i].f)+1+banc(i, range[indr].f);
        if(cmax+ne-pre < k) continue;
        cmax += ne-pre;
        cur.insert({range[i].f,i});
        ans.push_back(i);
        csz++;
    }
    if(ans.empty()) cout << "-1\n";
    else{
        for(auto &a: ans) cout << a << "\n";
    }
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 80 ms 14924 KB Output is correct
5 Correct 81 ms 14660 KB Output is correct
6 Correct 102 ms 14456 KB Output is correct
7 Correct 80 ms 13860 KB Output is correct
8 Correct 89 ms 14932 KB Output is correct
9 Correct 89 ms 14648 KB Output is correct
10 Correct 77 ms 14388 KB Output is correct
11 Correct 92 ms 13896 KB Output is correct
12 Correct 98 ms 12872 KB Output is correct
13 Correct 72 ms 12744 KB Output is correct
14 Correct 65 ms 12644 KB Output is correct
15 Correct 72 ms 12236 KB Output is correct
16 Correct 49 ms 10400 KB Output is correct
17 Correct 61 ms 10260 KB Output is correct
18 Correct 58 ms 10180 KB Output is correct
19 Correct 45 ms 9916 KB Output is correct
20 Correct 42 ms 9928 KB Output is correct
21 Correct 38 ms 9888 KB Output is correct
22 Correct 44 ms 9928 KB Output is correct
23 Correct 44 ms 9860 KB Output is correct
24 Correct 43 ms 9820 KB Output is correct
25 Correct 50 ms 9920 KB Output is correct
26 Correct 46 ms 9808 KB Output is correct
27 Correct 43 ms 9908 KB Output is correct
28 Correct 57 ms 9924 KB Output is correct
29 Correct 52 ms 9940 KB Output is correct
30 Correct 56 ms 9852 KB Output is correct
31 Correct 55 ms 9816 KB Output is correct
32 Correct 48 ms 9932 KB Output is correct
33 Correct 57 ms 9928 KB Output is correct
34 Correct 59 ms 11704 KB Output is correct
35 Correct 50 ms 10960 KB Output is correct
36 Correct 43 ms 10304 KB Output is correct
37 Correct 59 ms 12468 KB Output is correct
38 Correct 68 ms 12372 KB Output is correct
39 Correct 59 ms 12280 KB Output is correct
40 Correct 57 ms 12144 KB Output is correct
41 Correct 62 ms 12076 KB Output is correct
42 Correct 54 ms 9928 KB Output is correct
43 Correct 61 ms 12408 KB Output is correct
44 Correct 64 ms 12232 KB Output is correct
45 Correct 71 ms 12208 KB Output is correct
46 Correct 73 ms 12012 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 268 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 316 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 316 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 324 KB Output is correct
25 Correct 1 ms 380 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 204 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 268 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 316 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 316 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 324 KB Output is correct
25 Correct 1 ms 380 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 3 ms 588 KB Output is correct
29 Correct 2 ms 588 KB Output is correct
30 Correct 2 ms 588 KB Output is correct
31 Correct 3 ms 576 KB Output is correct
32 Correct 2 ms 588 KB Output is correct
33 Correct 4 ms 588 KB Output is correct
34 Correct 4 ms 668 KB Output is correct
35 Correct 3 ms 844 KB Output is correct
36 Correct 3 ms 712 KB Output is correct
37 Correct 3 ms 716 KB Output is correct
38 Correct 3 ms 588 KB Output is correct
39 Correct 3 ms 716 KB Output is correct
40 Correct 3 ms 716 KB Output is correct
41 Correct 3 ms 716 KB Output is correct
42 Correct 3 ms 588 KB Output is correct
43 Correct 3 ms 712 KB Output is correct
44 Correct 2 ms 716 KB Output is correct
45 Correct 2 ms 716 KB Output is correct
46 Correct 3 ms 588 KB Output is correct
47 Correct 3 ms 588 KB Output is correct
48 Correct 3 ms 700 KB Output is correct
49 Correct 3 ms 588 KB Output is correct
50 Correct 3 ms 676 KB Output is correct
51 Correct 2 ms 588 KB Output is correct
52 Correct 2 ms 588 KB Output is correct
53 Correct 2 ms 588 KB Output is correct
54 Correct 2 ms 588 KB Output is correct
55 Correct 4 ms 844 KB Output is correct
56 Correct 2 ms 844 KB Output is correct
57 Correct 3 ms 844 KB Output is correct
58 Correct 2 ms 808 KB Output is correct
59 Correct 3 ms 848 KB Output is correct
60 Correct 4 ms 844 KB Output is correct
61 Correct 3 ms 804 KB Output is correct
62 Correct 3 ms 840 KB Output is correct
63 Correct 4 ms 784 KB Output is correct
64 Correct 4 ms 588 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 80 ms 14924 KB Output is correct
5 Correct 81 ms 14660 KB Output is correct
6 Correct 102 ms 14456 KB Output is correct
7 Correct 80 ms 13860 KB Output is correct
8 Correct 89 ms 14932 KB Output is correct
9 Correct 89 ms 14648 KB Output is correct
10 Correct 77 ms 14388 KB Output is correct
11 Correct 92 ms 13896 KB Output is correct
12 Correct 98 ms 12872 KB Output is correct
13 Correct 72 ms 12744 KB Output is correct
14 Correct 65 ms 12644 KB Output is correct
15 Correct 72 ms 12236 KB Output is correct
16 Correct 49 ms 10400 KB Output is correct
17 Correct 61 ms 10260 KB Output is correct
18 Correct 58 ms 10180 KB Output is correct
19 Correct 45 ms 9916 KB Output is correct
20 Correct 42 ms 9928 KB Output is correct
21 Correct 38 ms 9888 KB Output is correct
22 Correct 44 ms 9928 KB Output is correct
23 Correct 44 ms 9860 KB Output is correct
24 Correct 43 ms 9820 KB Output is correct
25 Correct 50 ms 9920 KB Output is correct
26 Correct 46 ms 9808 KB Output is correct
27 Correct 43 ms 9908 KB Output is correct
28 Correct 57 ms 9924 KB Output is correct
29 Correct 52 ms 9940 KB Output is correct
30 Correct 56 ms 9852 KB Output is correct
31 Correct 55 ms 9816 KB Output is correct
32 Correct 48 ms 9932 KB Output is correct
33 Correct 57 ms 9928 KB Output is correct
34 Correct 59 ms 11704 KB Output is correct
35 Correct 50 ms 10960 KB Output is correct
36 Correct 43 ms 10304 KB Output is correct
37 Correct 59 ms 12468 KB Output is correct
38 Correct 68 ms 12372 KB Output is correct
39 Correct 59 ms 12280 KB Output is correct
40 Correct 57 ms 12144 KB Output is correct
41 Correct 62 ms 12076 KB Output is correct
42 Correct 54 ms 9928 KB Output is correct
43 Correct 61 ms 12408 KB Output is correct
44 Correct 64 ms 12232 KB Output is correct
45 Correct 71 ms 12208 KB Output is correct
46 Correct 73 ms 12012 KB Output is correct
47 Correct 1 ms 268 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 320 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 0 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 1 ms 324 KB Output is correct
56 Correct 1 ms 320 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 1 ms 320 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 316 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 328 KB Output is correct
64 Correct 0 ms 204 KB Output is correct
65 Correct 1 ms 316 KB Output is correct
66 Correct 1 ms 204 KB Output is correct
67 Correct 1 ms 204 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 324 KB Output is correct
71 Correct 1 ms 380 KB Output is correct
72 Correct 1 ms 332 KB Output is correct
73 Correct 1 ms 204 KB Output is correct
74 Correct 3 ms 588 KB Output is correct
75 Correct 2 ms 588 KB Output is correct
76 Correct 2 ms 588 KB Output is correct
77 Correct 3 ms 576 KB Output is correct
78 Correct 2 ms 588 KB Output is correct
79 Correct 4 ms 588 KB Output is correct
80 Correct 4 ms 668 KB Output is correct
81 Correct 3 ms 844 KB Output is correct
82 Correct 3 ms 712 KB Output is correct
83 Correct 3 ms 716 KB Output is correct
84 Correct 3 ms 588 KB Output is correct
85 Correct 3 ms 716 KB Output is correct
86 Correct 3 ms 716 KB Output is correct
87 Correct 3 ms 716 KB Output is correct
88 Correct 3 ms 588 KB Output is correct
89 Correct 3 ms 712 KB Output is correct
90 Correct 2 ms 716 KB Output is correct
91 Correct 2 ms 716 KB Output is correct
92 Correct 3 ms 588 KB Output is correct
93 Correct 3 ms 588 KB Output is correct
94 Correct 3 ms 700 KB Output is correct
95 Correct 3 ms 588 KB Output is correct
96 Correct 3 ms 676 KB Output is correct
97 Correct 2 ms 588 KB Output is correct
98 Correct 2 ms 588 KB Output is correct
99 Correct 2 ms 588 KB Output is correct
100 Correct 2 ms 588 KB Output is correct
101 Correct 4 ms 844 KB Output is correct
102 Correct 2 ms 844 KB Output is correct
103 Correct 3 ms 844 KB Output is correct
104 Correct 2 ms 808 KB Output is correct
105 Correct 3 ms 848 KB Output is correct
106 Correct 4 ms 844 KB Output is correct
107 Correct 3 ms 804 KB Output is correct
108 Correct 3 ms 840 KB Output is correct
109 Correct 4 ms 784 KB Output is correct
110 Correct 4 ms 588 KB Output is correct
111 Correct 56 ms 11784 KB Output is correct
112 Correct 52 ms 11856 KB Output is correct
113 Correct 56 ms 11736 KB Output is correct
114 Correct 61 ms 11808 KB Output is correct
115 Correct 77 ms 11864 KB Output is correct
116 Correct 89 ms 11872 KB Output is correct
117 Correct 74 ms 11864 KB Output is correct
118 Correct 155 ms 16824 KB Output is correct
119 Correct 131 ms 16384 KB Output is correct
120 Correct 105 ms 14260 KB Output is correct
121 Correct 128 ms 11800 KB Output is correct
122 Correct 134 ms 14812 KB Output is correct
123 Correct 122 ms 14576 KB Output is correct
124 Correct 115 ms 14220 KB Output is correct
125 Correct 131 ms 11868 KB Output is correct
126 Correct 89 ms 12348 KB Output is correct
127 Correct 77 ms 12272 KB Output is correct
128 Correct 85 ms 12116 KB Output is correct
129 Correct 100 ms 11876 KB Output is correct
130 Correct 71 ms 11908 KB Output is correct
131 Correct 65 ms 11824 KB Output is correct
132 Correct 59 ms 11876 KB Output is correct
133 Correct 76 ms 11748 KB Output is correct
134 Correct 69 ms 11784 KB Output is correct
135 Correct 57 ms 11868 KB Output is correct
136 Correct 60 ms 11952 KB Output is correct
137 Correct 69 ms 11772 KB Output is correct
138 Correct 75 ms 11748 KB Output is correct
139 Correct 54 ms 11768 KB Output is correct
140 Correct 67 ms 11876 KB Output is correct
141 Correct 66 ms 11876 KB Output is correct
142 Correct 88 ms 17236 KB Output is correct
143 Correct 106 ms 17356 KB Output is correct
144 Correct 98 ms 17224 KB Output is correct
145 Correct 83 ms 17240 KB Output is correct
146 Correct 79 ms 17144 KB Output is correct
147 Correct 82 ms 17004 KB Output is correct
148 Correct 81 ms 16928 KB Output is correct
149 Correct 72 ms 16724 KB Output is correct
150 Correct 89 ms 16720 KB Output is correct
151 Correct 107 ms 16108 KB Output is correct
152 Correct 51 ms 11764 KB Output is correct
153 Correct 79 ms 17260 KB Output is correct
154 Correct 98 ms 17192 KB Output is correct
155 Correct 74 ms 16984 KB Output is correct
156 Correct 91 ms 16884 KB Output is correct
157 Correct 70 ms 16820 KB Output is correct
158 Correct 76 ms 16740 KB Output is correct
159 Correct 72 ms 16108 KB Output is correct
160 Correct 51 ms 11888 KB Output is correct
161 Correct 95 ms 14384 KB Output is correct
162 Correct 95 ms 14408 KB Output is correct
163 Correct 102 ms 14244 KB Output is correct
164 Correct 96 ms 14052 KB Output is correct
165 Correct 83 ms 13948 KB Output is correct
166 Correct 62 ms 11848 KB Output is correct
167 Correct 76 ms 14340 KB Output is correct
168 Correct 65 ms 14200 KB Output is correct
169 Correct 62 ms 14084 KB Output is correct
170 Correct 62 ms 14088 KB Output is correct
171 Correct 67 ms 13744 KB Output is correct
172 Correct 63 ms 14452 KB Output is correct
173 Correct 104 ms 14416 KB Output is correct
174 Correct 132 ms 14416 KB Output is correct
175 Correct 105 ms 14432 KB Output is correct
176 Correct 85 ms 13848 KB Output is correct