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Submission #398476

# Submission time Handle Problem Language Result Execution time Memory
398476 2021-05-04T11:08:25 Z model_code The short shank; Redemption (BOI21_prison) C++17
100 / 100
 632 ms 213652 KB 
#include<bits/stdc++.h>

using namespace std;
typedef pair<int,int> pii;

int main()
{
    int N, D, T; scanf("%d %d %d", &N, &D, &T);

    int last_rebel = -1;
    int num_rebels = 0;
    vector<int> inactive(N, -1);
    vector<int> times(N);
    vector<int> next;
    stack<pii> S;

    for(int i = 0; i < N; ++i)
    {
        int t; scanf("%d", &t);
        times[i] = t;

        last_rebel = max(last_rebel, i + T - t);

        if(not S.empty()) S.top().second = max(S.top().second, i + T - t);

        if(t > T and last_rebel >= i)
        {
            int last_rebel_internal = -1;
            ++num_rebels;

            while(not S.empty())
            {
                pii curr = S.top();
                int j = curr.first;

                last_rebel_internal = max(last_rebel_internal, curr.second);
                if(last_rebel_internal >= i) break;

                next[inactive[j]] = next.size();
                S.pop();
            }

            S.emplace(i, -1);

            inactive[i] = next.size();
            next.push_back(-1);
        }

        if(t <= T) ++num_rebels;
    }

    vector<vector<int>> children(next.size());
    vector<int> subtree_height(next.size(), 1);
    vector<int> max_subtree(next.size(), -1);
    vector<vector<int>> PQpre(next.size() + 1);
    deque<pii> PQ;
    vector<char> erased(next.size(), false);

    for(int i = 0; i < next.size(); ++i)
    {
        int j = next[i];

        if(j != -1)
        {
            children[j].push_back(i);

            int new_height = subtree_height[i] + 1;

            if(new_height > subtree_height[j])
            {
                subtree_height[j] = new_height;
                max_subtree[j] = children[j].size() - 1;
            }
        }

        PQpre[subtree_height[i]].push_back(i);
    }

    for(int i = PQpre.size() - 1; i >= 0; --i)
        for(int x : PQpre[i]) PQ.emplace_back(i, x);

    int stopped = 0;

    for(int i = 0; i < D and not PQ.empty(); ++i)
    {
        pii curr = PQ.front(); PQ.pop_front();
        stopped += curr.first;

        int j;
        for(j = curr.second; max_subtree[j] != -1 and not erased[j]; j = children[j][max_subtree[j]])
            erased[j] = true;
        erased[j] = true;

        while(not PQ.empty() and erased[PQ.front().second]) PQ.pop_front();
    }
    
    printf("%d\n", num_rebels - stopped);
    return 0;
}

Compilation message

prison.cpp: In function 'int main()':
prison.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     for(int i = 0; i < next.size(); ++i)
      |                    ~~^~~~~~~~~~~~~
prison.cpp:8:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |     int N, D, T; scanf("%d %d %d", &N, &D, &T);
      |                  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
prison.cpp:19:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   19 |         int t; scanf("%d", &t);
      |                ~~~~~^~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 108 ms 27064 KB Output is correct
3 Correct 100 ms 19308 KB Output is correct
4 Correct 104 ms 29540 KB Output is correct
5 Correct 116 ms 36080 KB Output is correct
6 Correct 104 ms 24920 KB Output is correct
7 Correct 163 ms 69300 KB Output is correct
8 Correct 107 ms 29240 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 204 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 384 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 2 ms 464 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 460 KB Output is correct
27 Correct 2 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 4 ms 460 KB Output is correct
30 Correct 1 ms 464 KB Output is correct
31 Correct 1 ms 460 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 2 ms 460 KB Output is correct
34 Correct 1 ms 588 KB Output is correct
35 Correct 1 ms 460 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 19 ms 5220 KB Output is correct
3 Correct 17 ms 4348 KB Output is correct
4 Correct 19 ms 6856 KB Output is correct
5 Correct 21 ms 7568 KB Output is correct
6 Correct 32 ms 7872 KB Output is correct
7 Correct 15 ms 3940 KB Output is correct
8 Correct 14 ms 3560 KB Output is correct
9 Correct 26 ms 10564 KB Output is correct
10 Correct 20 ms 3600 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 204 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 384 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 2 ms 464 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 460 KB Output is correct
27 Correct 2 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 4 ms 460 KB Output is correct
30 Correct 1 ms 464 KB Output is correct
31 Correct 1 ms 460 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 2 ms 460 KB Output is correct
34 Correct 1 ms 588 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 19 ms 5220 KB Output is correct
38 Correct 17 ms 4348 KB Output is correct
39 Correct 19 ms 6856 KB Output is correct
40 Correct 21 ms 7568 KB Output is correct
41 Correct 32 ms 7872 KB Output is correct
42 Correct 15 ms 3940 KB Output is correct
43 Correct 14 ms 3560 KB Output is correct
44 Correct 26 ms 10564 KB Output is correct
45 Correct 20 ms 3600 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 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 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 1 ms 336 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 1 ms 204 KB Output is correct
57 Correct 2 ms 460 KB Output is correct
58 Correct 1 ms 460 KB Output is correct
59 Correct 2 ms 468 KB Output is correct
60 Correct 2 ms 460 KB Output is correct
61 Correct 2 ms 460 KB Output is correct
62 Correct 1 ms 460 KB Output is correct
63 Correct 2 ms 460 KB Output is correct
64 Correct 1 ms 460 KB Output is correct
65 Correct 1 ms 460 KB Output is correct
66 Correct 1 ms 460 KB Output is correct
67 Correct 2 ms 460 KB Output is correct
68 Correct 2 ms 592 KB Output is correct
69 Correct 1 ms 460 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 18 ms 5308 KB Output is correct
72 Correct 17 ms 4332 KB Output is correct
73 Correct 19 ms 6856 KB Output is correct
74 Correct 25 ms 7552 KB Output is correct
75 Correct 22 ms 7872 KB Output is correct
76 Correct 14 ms 3924 KB Output is correct
77 Correct 15 ms 3532 KB Output is correct
78 Correct 26 ms 10620 KB Output is correct
79 Correct 13 ms 3516 KB Output is correct
80 Correct 17 ms 4260 KB Output is correct
81 Correct 20 ms 5240 KB Output is correct
82 Correct 18 ms 4360 KB Output is correct
83 Correct 19 ms 6472 KB Output is correct
84 Correct 16 ms 5448 KB Output is correct
85 Correct 25 ms 8392 KB Output is correct
86 Correct 18 ms 5376 KB Output is correct
87 Correct 15 ms 3432 KB Output is correct
88 Correct 22 ms 8792 KB Output is correct
89 Correct 26 ms 10256 KB Output is correct
90 Correct 29 ms 8136 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 108 ms 27064 KB Output is correct
14 Correct 100 ms 19308 KB Output is correct
15 Correct 104 ms 29540 KB Output is correct
16 Correct 116 ms 36080 KB Output is correct
17 Correct 104 ms 24920 KB Output is correct
18 Correct 163 ms 69300 KB Output is correct
19 Correct 107 ms 29240 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 208 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 204 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 2 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 2 ms 460 KB Output is correct
34 Correct 2 ms 460 KB Output is correct
35 Correct 2 ms 460 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 4 ms 460 KB Output is correct
38 Correct 1 ms 464 KB Output is correct
39 Correct 1 ms 460 KB Output is correct
40 Correct 2 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 1 ms 588 KB Output is correct
43 Correct 1 ms 460 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 19 ms 5220 KB Output is correct
46 Correct 17 ms 4348 KB Output is correct
47 Correct 19 ms 6856 KB Output is correct
48 Correct 21 ms 7568 KB Output is correct
49 Correct 32 ms 7872 KB Output is correct
50 Correct 15 ms 3940 KB Output is correct
51 Correct 14 ms 3560 KB Output is correct
52 Correct 26 ms 10564 KB Output is correct
53 Correct 20 ms 3600 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 1 ms 204 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 1 ms 336 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 2 ms 460 KB Output is correct
66 Correct 1 ms 460 KB Output is correct
67 Correct 2 ms 468 KB Output is correct
68 Correct 2 ms 460 KB Output is correct
69 Correct 2 ms 460 KB Output is correct
70 Correct 1 ms 460 KB Output is correct
71 Correct 2 ms 460 KB Output is correct
72 Correct 1 ms 460 KB Output is correct
73 Correct 1 ms 460 KB Output is correct
74 Correct 1 ms 460 KB Output is correct
75 Correct 2 ms 460 KB Output is correct
76 Correct 2 ms 592 KB Output is correct
77 Correct 1 ms 460 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 18 ms 5308 KB Output is correct
80 Correct 17 ms 4332 KB Output is correct
81 Correct 19 ms 6856 KB Output is correct
82 Correct 25 ms 7552 KB Output is correct
83 Correct 22 ms 7872 KB Output is correct
84 Correct 14 ms 3924 KB Output is correct
85 Correct 15 ms 3532 KB Output is correct
86 Correct 26 ms 10620 KB Output is correct
87 Correct 13 ms 3516 KB Output is correct
88 Correct 17 ms 4260 KB Output is correct
89 Correct 20 ms 5240 KB Output is correct
90 Correct 18 ms 4360 KB Output is correct
91 Correct 19 ms 6472 KB Output is correct
92 Correct 16 ms 5448 KB Output is correct
93 Correct 25 ms 8392 KB Output is correct
94 Correct 18 ms 5376 KB Output is correct
95 Correct 15 ms 3432 KB Output is correct
96 Correct 22 ms 8792 KB Output is correct
97 Correct 26 ms 10256 KB Output is correct
98 Correct 29 ms 8136 KB Output is correct
99 Correct 1 ms 204 KB Output is correct
100 Correct 1 ms 204 KB Output is correct
101 Correct 1 ms 204 KB Output is correct
102 Correct 1 ms 204 KB Output is correct
103 Correct 1 ms 204 KB Output is correct
104 Correct 1 ms 332 KB Output is correct
105 Correct 1 ms 204 KB Output is correct
106 Correct 1 ms 204 KB Output is correct
107 Correct 1 ms 204 KB Output is correct
108 Correct 1 ms 204 KB Output is correct
109 Correct 1 ms 204 KB Output is correct
110 Correct 1 ms 204 KB Output is correct
111 Correct 108 ms 27080 KB Output is correct
112 Correct 99 ms 19276 KB Output is correct
113 Correct 103 ms 29484 KB Output is correct
114 Correct 107 ms 35996 KB Output is correct
115 Correct 101 ms 24868 KB Output is correct
116 Correct 162 ms 69332 KB Output is correct
117 Correct 113 ms 29348 KB Output is correct
118 Correct 2 ms 460 KB Output is correct
119 Correct 2 ms 460 KB Output is correct
120 Correct 2 ms 460 KB Output is correct
121 Correct 1 ms 460 KB Output is correct
122 Correct 2 ms 460 KB Output is correct
123 Correct 2 ms 460 KB Output is correct
124 Correct 4 ms 544 KB Output is correct
125 Correct 1 ms 460 KB Output is correct
126 Correct 2 ms 460 KB Output is correct
127 Correct 1 ms 460 KB Output is correct
128 Correct 1 ms 460 KB Output is correct
129 Correct 1 ms 588 KB Output is correct
130 Correct 2 ms 460 KB Output is correct
131 Correct 1 ms 204 KB Output is correct
132 Correct 18 ms 5320 KB Output is correct
133 Correct 17 ms 4296 KB Output is correct
134 Correct 21 ms 6856 KB Output is correct
135 Correct 32 ms 7568 KB Output is correct
136 Correct 22 ms 7804 KB Output is correct
137 Correct 15 ms 3916 KB Output is correct
138 Correct 15 ms 3616 KB Output is correct
139 Correct 25 ms 10572 KB Output is correct
140 Correct 14 ms 3528 KB Output is correct
141 Correct 18 ms 4296 KB Output is correct
142 Correct 22 ms 5256 KB Output is correct
143 Correct 25 ms 4284 KB Output is correct
144 Correct 26 ms 6480 KB Output is correct
145 Correct 16 ms 5460 KB Output is correct
146 Correct 23 ms 8384 KB Output is correct
147 Correct 17 ms 5292 KB Output is correct
148 Correct 15 ms 3536 KB Output is correct
149 Correct 21 ms 8776 KB Output is correct
150 Correct 31 ms 10312 KB Output is correct
151 Correct 21 ms 8084 KB Output is correct
152 Correct 444 ms 107608 KB Output is correct
153 Correct 495 ms 117544 KB Output is correct
154 Correct 426 ms 99744 KB Output is correct
155 Correct 509 ms 151904 KB Output is correct
156 Correct 468 ms 142540 KB Output is correct
157 Correct 400 ms 69388 KB Output is correct
158 Correct 461 ms 109288 KB Output is correct
159 Correct 632 ms 213652 KB Output is correct
160 Correct 611 ms 200568 KB Output is correct
161 Correct 369 ms 71800 KB Output is correct
162 Correct 385 ms 73804 KB Output is correct