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Submission #516149

# Submission time Handle Problem Language Result Execution time Memory
516149 2022-01-20T13:02:03 Z Wayne_Yan The short shank; Redemption (BOI21_prison) C++17
100 / 100
 545 ms 362016 KB 
#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;

typedef int64_t ll;
typedef long double ld;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define pb emplace_back
#define mp make_pair
#define mt make_tuple
#define pii pair<int,int>
#define F(n) Fi(i,n)
#define Fi(i,n) Fl(i,0,n)
#define Fl(i,l,n) for(int i=l;i<n;i++)
#define RF(n) RFi(i,n)
#define RFi(i,n) RFl(i,0,n)
#define RFl(i,l,n) for(int i=n-1;i>=l;i--)
#define all(v) begin(v),end(v)
#define siz(v) (ll(v.size()))
#define get_pos(v,x) (lower_bound(all(v),x)-begin(v))
#define sort_uni(v) sort(begin(v),end(v)),v.erase(unique(begin(v),end(v)),end(v))
#define mem(v,x) memset(v,x,sizeof v)
#define ff first
#define ss second
#define mid ((l+r)>>1)
#define RAN(a,b) uniform_int_distribution<int> (a, b)(rng)
#define debug(x) (cerr << (#x) << " = " << x << "\n")
#define cmax(a,b) (a = max(a,b))
#define cmin(a,b) (a = min(a,b))

template <typename T> using max_heap = __gnu_pbds::priority_queue<T,less<T> >;
template <typename T> using min_heap = __gnu_pbds::priority_queue<T,greater<T> >;
template <typename T> using rbt = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;

const int maxN = 2e6+10;
int arr[maxN];
int fa[maxN];
int actual[maxN];
int previ[maxN];
vector<int> edge[maxN];
vector<int> cnt[maxN];
bool deleted[maxN];

int height[maxN], pointer[maxN];

void dfs(int c){
  bool leaf = true;
  for(int i : edge[c]){
    if(i == fa[c]) continue;
    leaf = false;
    dfs(i);
    if(height[i] + 1 > height[c]){
      height[c] = height[i] + 1;
      pointer[c] = pointer[i];
    }
  }
  if(leaf){
    height[c] = 1;
    pointer[c] = c;
  }
}

signed main(){
  
  fill(fa, fa+maxN, -1);
  fill(previ, previ+maxN, -1);
  fill(height, height+maxN, -1);


  cin.tie(0);
  ios_base::sync_with_stdio(false);

  int N,D,T;
  cin >> N >> D >> T;
  
  F(N) cin >> arr[i];
  
  
  actual[0] = arr[0];

  Fl(i, 1, N){
    actual[i] = min(arr[i], actual[i-1]+1);
  }
  
  stack<int> st;
  stack<int> q;
  RF(N){
    if(actual[i] <= T && arr[i] > T){
      q.push(i);
    }
    if(arr[i] < T){
      while(!q.empty() && arr[i] + q.top() - i <= T){
        previ[q.top()] = i;
        q.pop();
      }
    }
  }

  F(N){
    if(actual[i] <= T && arr[i] > T){
      while(!st.empty() && st.top() > previ[i]){
        fa[st.top()] = i;
        edge[i].pb(st.top());
        edge[st.top()].pb(i);
        st.pop();
      }
      st.push(i);
    }
  }

  /* 
  F(N) printf("%d ", actual[i]);
  printf("\n");
  F(N) printf("%d ", previ[i]);
  printf("\n");
  F(N) printf("%d ", fa[i]);
  printf("\n");
  */

  F(N) if(actual[i] <= T && arr[i] > T && fa[i] == -1) dfs(i);
  F(N) if(actual[i] <= T && arr[i] > T) cnt[height[i]].pb(i);

  int suppressed = 0;

  RF(N){
    for(int j : cnt[i]){
      if(deleted[j] || D <= 0) continue;

      int cursor = pointer[j];
      while(cursor != j){
        deleted[cursor] = true;
        suppressed++;
        cursor = fa[cursor];
      }
      deleted[j] = true;
      suppressed++;
      D--;
    }
  }

  F(N) if(actual[i] > T) suppressed++;

  printf("%d", N - suppressed);

  return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 117816 KB Output is correct
2 Correct 50 ms 117728 KB Output is correct
3 Correct 71 ms 117704 KB Output is correct
4 Correct 53 ms 117708 KB Output is correct
5 Correct 49 ms 117712 KB Output is correct
6 Correct 50 ms 117748 KB Output is correct
7 Correct 60 ms 117708 KB Output is correct
8 Correct 50 ms 117652 KB Output is correct
9 Correct 49 ms 117656 KB Output is correct
10 Correct 49 ms 117752 KB Output is correct
11 Correct 50 ms 117748 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 117680 KB Output is correct
2 Correct 136 ms 135816 KB Output is correct
3 Correct 138 ms 132784 KB Output is correct
4 Correct 140 ms 138192 KB Output is correct
5 Correct 128 ms 137044 KB Output is correct
6 Correct 132 ms 139092 KB Output is correct
7 Correct 208 ms 198264 KB Output is correct
8 Correct 139 ms 141148 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 117816 KB Output is correct
2 Correct 50 ms 117728 KB Output is correct
3 Correct 71 ms 117704 KB Output is correct
4 Correct 53 ms 117708 KB Output is correct
5 Correct 49 ms 117712 KB Output is correct
6 Correct 50 ms 117748 KB Output is correct
7 Correct 60 ms 117708 KB Output is correct
8 Correct 50 ms 117652 KB Output is correct
9 Correct 49 ms 117656 KB Output is correct
10 Correct 49 ms 117752 KB Output is correct
11 Correct 50 ms 117748 KB Output is correct
12 Correct 53 ms 117672 KB Output is correct
13 Correct 60 ms 117692 KB Output is correct
14 Correct 50 ms 117756 KB Output is correct
15 Correct 57 ms 117692 KB Output is correct
16 Correct 61 ms 117660 KB Output is correct
17 Correct 59 ms 117780 KB Output is correct
18 Correct 55 ms 117872 KB Output is correct
19 Correct 52 ms 117788 KB Output is correct
20 Correct 53 ms 117724 KB Output is correct
21 Correct 53 ms 117732 KB Output is correct
22 Correct 50 ms 117732 KB Output is correct
23 Correct 52 ms 117892 KB Output is correct
24 Correct 53 ms 117792 KB Output is correct
25 Correct 56 ms 117884 KB Output is correct
26 Correct 53 ms 117836 KB Output is correct
27 Correct 52 ms 117892 KB Output is correct
28 Correct 51 ms 117828 KB Output is correct
29 Correct 51 ms 117916 KB Output is correct
30 Correct 52 ms 117884 KB Output is correct
31 Correct 55 ms 117848 KB Output is correct
32 Correct 61 ms 117844 KB Output is correct
33 Correct 49 ms 117768 KB Output is correct
34 Correct 51 ms 117900 KB Output is correct
35 Correct 52 ms 117912 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 117656 KB Output is correct
2 Correct 65 ms 121028 KB Output is correct
3 Correct 66 ms 120652 KB Output is correct
4 Correct 73 ms 124620 KB Output is correct
5 Correct 68 ms 126476 KB Output is correct
6 Correct 69 ms 126572 KB Output is correct
7 Correct 62 ms 120976 KB Output is correct
8 Correct 65 ms 120704 KB Output is correct
9 Correct 87 ms 129892 KB Output is correct
10 Correct 62 ms 119684 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 117816 KB Output is correct
2 Correct 50 ms 117728 KB Output is correct
3 Correct 71 ms 117704 KB Output is correct
4 Correct 53 ms 117708 KB Output is correct
5 Correct 49 ms 117712 KB Output is correct
6 Correct 50 ms 117748 KB Output is correct
7 Correct 60 ms 117708 KB Output is correct
8 Correct 50 ms 117652 KB Output is correct
9 Correct 49 ms 117656 KB Output is correct
10 Correct 49 ms 117752 KB Output is correct
11 Correct 50 ms 117748 KB Output is correct
12 Correct 53 ms 117672 KB Output is correct
13 Correct 60 ms 117692 KB Output is correct
14 Correct 50 ms 117756 KB Output is correct
15 Correct 57 ms 117692 KB Output is correct
16 Correct 61 ms 117660 KB Output is correct
17 Correct 59 ms 117780 KB Output is correct
18 Correct 55 ms 117872 KB Output is correct
19 Correct 52 ms 117788 KB Output is correct
20 Correct 53 ms 117724 KB Output is correct
21 Correct 53 ms 117732 KB Output is correct
22 Correct 50 ms 117732 KB Output is correct
23 Correct 52 ms 117892 KB Output is correct
24 Correct 53 ms 117792 KB Output is correct
25 Correct 56 ms 117884 KB Output is correct
26 Correct 53 ms 117836 KB Output is correct
27 Correct 52 ms 117892 KB Output is correct
28 Correct 51 ms 117828 KB Output is correct
29 Correct 51 ms 117916 KB Output is correct
30 Correct 52 ms 117884 KB Output is correct
31 Correct 55 ms 117848 KB Output is correct
32 Correct 61 ms 117844 KB Output is correct
33 Correct 49 ms 117768 KB Output is correct
34 Correct 51 ms 117900 KB Output is correct
35 Correct 52 ms 117912 KB Output is correct
36 Correct 49 ms 117656 KB Output is correct
37 Correct 65 ms 121028 KB Output is correct
38 Correct 66 ms 120652 KB Output is correct
39 Correct 73 ms 124620 KB Output is correct
40 Correct 68 ms 126476 KB Output is correct
41 Correct 69 ms 126572 KB Output is correct
42 Correct 62 ms 120976 KB Output is correct
43 Correct 65 ms 120704 KB Output is correct
44 Correct 87 ms 129892 KB Output is correct
45 Correct 62 ms 119684 KB Output is correct
46 Correct 52 ms 117652 KB Output is correct
47 Correct 54 ms 117776 KB Output is correct
48 Correct 51 ms 117672 KB Output is correct
49 Correct 57 ms 117712 KB Output is correct
50 Correct 50 ms 117704 KB Output is correct
51 Correct 53 ms 117776 KB Output is correct
52 Correct 51 ms 117708 KB Output is correct
53 Correct 51 ms 117784 KB Output is correct
54 Correct 50 ms 117672 KB Output is correct
55 Correct 51 ms 117780 KB Output is correct
56 Correct 51 ms 117768 KB Output is correct
57 Correct 53 ms 117888 KB Output is correct
58 Correct 55 ms 117884 KB Output is correct
59 Correct 53 ms 117928 KB Output is correct
60 Correct 51 ms 117888 KB Output is correct
61 Correct 52 ms 117852 KB Output is correct
62 Correct 51 ms 117828 KB Output is correct
63 Correct 51 ms 117888 KB Output is correct
64 Correct 53 ms 117888 KB Output is correct
65 Correct 50 ms 117836 KB Output is correct
66 Correct 52 ms 117816 KB Output is correct
67 Correct 51 ms 117808 KB Output is correct
68 Correct 52 ms 117828 KB Output is correct
69 Correct 52 ms 117888 KB Output is correct
70 Correct 52 ms 117700 KB Output is correct
71 Correct 68 ms 121028 KB Output is correct
72 Correct 65 ms 120604 KB Output is correct
73 Correct 67 ms 124612 KB Output is correct
74 Correct 68 ms 126424 KB Output is correct
75 Correct 69 ms 126476 KB Output is correct
76 Correct 62 ms 120856 KB Output is correct
77 Correct 62 ms 120664 KB Output is correct
78 Correct 71 ms 129704 KB Output is correct
79 Correct 61 ms 119712 KB Output is correct
80 Correct 65 ms 120660 KB Output is correct
81 Correct 67 ms 120948 KB Output is correct
82 Correct 67 ms 120612 KB Output is correct
83 Correct 69 ms 122484 KB Output is correct
84 Correct 64 ms 120536 KB Output is correct
85 Correct 69 ms 126784 KB Output is correct
86 Correct 65 ms 122308 KB Output is correct
87 Correct 70 ms 120260 KB Output is correct
88 Correct 68 ms 127736 KB Output is correct
89 Correct 75 ms 129260 KB Output is correct
90 Correct 74 ms 126164 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 117816 KB Output is correct
2 Correct 50 ms 117728 KB Output is correct
3 Correct 71 ms 117704 KB Output is correct
4 Correct 53 ms 117708 KB Output is correct
5 Correct 49 ms 117712 KB Output is correct
6 Correct 50 ms 117748 KB Output is correct
7 Correct 60 ms 117708 KB Output is correct
8 Correct 50 ms 117652 KB Output is correct
9 Correct 49 ms 117656 KB Output is correct
10 Correct 49 ms 117752 KB Output is correct
11 Correct 50 ms 117748 KB Output is correct
12 Correct 50 ms 117680 KB Output is correct
13 Correct 136 ms 135816 KB Output is correct
14 Correct 138 ms 132784 KB Output is correct
15 Correct 140 ms 138192 KB Output is correct
16 Correct 128 ms 137044 KB Output is correct
17 Correct 132 ms 139092 KB Output is correct
18 Correct 208 ms 198264 KB Output is correct
19 Correct 139 ms 141148 KB Output is correct
20 Correct 53 ms 117672 KB Output is correct
21 Correct 60 ms 117692 KB Output is correct
22 Correct 50 ms 117756 KB Output is correct
23 Correct 57 ms 117692 KB Output is correct
24 Correct 61 ms 117660 KB Output is correct
25 Correct 59 ms 117780 KB Output is correct
26 Correct 55 ms 117872 KB Output is correct
27 Correct 52 ms 117788 KB Output is correct
28 Correct 53 ms 117724 KB Output is correct
29 Correct 53 ms 117732 KB Output is correct
30 Correct 50 ms 117732 KB Output is correct
31 Correct 52 ms 117892 KB Output is correct
32 Correct 53 ms 117792 KB Output is correct
33 Correct 56 ms 117884 KB Output is correct
34 Correct 53 ms 117836 KB Output is correct
35 Correct 52 ms 117892 KB Output is correct
36 Correct 51 ms 117828 KB Output is correct
37 Correct 51 ms 117916 KB Output is correct
38 Correct 52 ms 117884 KB Output is correct
39 Correct 55 ms 117848 KB Output is correct
40 Correct 61 ms 117844 KB Output is correct
41 Correct 49 ms 117768 KB Output is correct
42 Correct 51 ms 117900 KB Output is correct
43 Correct 52 ms 117912 KB Output is correct
44 Correct 49 ms 117656 KB Output is correct
45 Correct 65 ms 121028 KB Output is correct
46 Correct 66 ms 120652 KB Output is correct
47 Correct 73 ms 124620 KB Output is correct
48 Correct 68 ms 126476 KB Output is correct
49 Correct 69 ms 126572 KB Output is correct
50 Correct 62 ms 120976 KB Output is correct
51 Correct 65 ms 120704 KB Output is correct
52 Correct 87 ms 129892 KB Output is correct
53 Correct 62 ms 119684 KB Output is correct
54 Correct 52 ms 117652 KB Output is correct
55 Correct 54 ms 117776 KB Output is correct
56 Correct 51 ms 117672 KB Output is correct
57 Correct 57 ms 117712 KB Output is correct
58 Correct 50 ms 117704 KB Output is correct
59 Correct 53 ms 117776 KB Output is correct
60 Correct 51 ms 117708 KB Output is correct
61 Correct 51 ms 117784 KB Output is correct
62 Correct 50 ms 117672 KB Output is correct
63 Correct 51 ms 117780 KB Output is correct
64 Correct 51 ms 117768 KB Output is correct
65 Correct 53 ms 117888 KB Output is correct
66 Correct 55 ms 117884 KB Output is correct
67 Correct 53 ms 117928 KB Output is correct
68 Correct 51 ms 117888 KB Output is correct
69 Correct 52 ms 117852 KB Output is correct
70 Correct 51 ms 117828 KB Output is correct
71 Correct 51 ms 117888 KB Output is correct
72 Correct 53 ms 117888 KB Output is correct
73 Correct 50 ms 117836 KB Output is correct
74 Correct 52 ms 117816 KB Output is correct
75 Correct 51 ms 117808 KB Output is correct
76 Correct 52 ms 117828 KB Output is correct
77 Correct 52 ms 117888 KB Output is correct
78 Correct 52 ms 117700 KB Output is correct
79 Correct 68 ms 121028 KB Output is correct
80 Correct 65 ms 120604 KB Output is correct
81 Correct 67 ms 124612 KB Output is correct
82 Correct 68 ms 126424 KB Output is correct
83 Correct 69 ms 126476 KB Output is correct
84 Correct 62 ms 120856 KB Output is correct
85 Correct 62 ms 120664 KB Output is correct
86 Correct 71 ms 129704 KB Output is correct
87 Correct 61 ms 119712 KB Output is correct
88 Correct 65 ms 120660 KB Output is correct
89 Correct 67 ms 120948 KB Output is correct
90 Correct 67 ms 120612 KB Output is correct
91 Correct 69 ms 122484 KB Output is correct
92 Correct 64 ms 120536 KB Output is correct
93 Correct 69 ms 126784 KB Output is correct
94 Correct 65 ms 122308 KB Output is correct
95 Correct 70 ms 120260 KB Output is correct
96 Correct 68 ms 127736 KB Output is correct
97 Correct 75 ms 129260 KB Output is correct
98 Correct 74 ms 126164 KB Output is correct
99 Correct 51 ms 117664 KB Output is correct
100 Correct 52 ms 117752 KB Output is correct
101 Correct 52 ms 117668 KB Output is correct
102 Correct 52 ms 117776 KB Output is correct
103 Correct 55 ms 117776 KB Output is correct
104 Correct 52 ms 117752 KB Output is correct
105 Correct 52 ms 117708 KB Output is correct
106 Correct 52 ms 117680 KB Output is correct
107 Correct 51 ms 117772 KB Output is correct
108 Correct 51 ms 117740 KB Output is correct
109 Correct 52 ms 117668 KB Output is correct
110 Correct 61 ms 117832 KB Output is correct
111 Correct 133 ms 135888 KB Output is correct
112 Correct 123 ms 132780 KB Output is correct
113 Correct 131 ms 138208 KB Output is correct
114 Correct 141 ms 137064 KB Output is correct
115 Correct 128 ms 138940 KB Output is correct
116 Correct 192 ms 198248 KB Output is correct
117 Correct 138 ms 141116 KB Output is correct
118 Correct 50 ms 117856 KB Output is correct
119 Correct 55 ms 117836 KB Output is correct
120 Correct 51 ms 117828 KB Output is correct
121 Correct 53 ms 117800 KB Output is correct
122 Correct 53 ms 117964 KB Output is correct
123 Correct 52 ms 117844 KB Output is correct
124 Correct 51 ms 117884 KB Output is correct
125 Correct 53 ms 117808 KB Output is correct
126 Correct 51 ms 117928 KB Output is correct
127 Correct 51 ms 117852 KB Output is correct
128 Correct 50 ms 117792 KB Output is correct
129 Correct 54 ms 117984 KB Output is correct
130 Correct 53 ms 117876 KB Output is correct
131 Correct 51 ms 117748 KB Output is correct
132 Correct 64 ms 120948 KB Output is correct
133 Correct 62 ms 120644 KB Output is correct
134 Correct 66 ms 124496 KB Output is correct
135 Correct 72 ms 126528 KB Output is correct
136 Correct 69 ms 126588 KB Output is correct
137 Correct 62 ms 120940 KB Output is correct
138 Correct 69 ms 120704 KB Output is correct
139 Correct 71 ms 129676 KB Output is correct
140 Correct 62 ms 119620 KB Output is correct
141 Correct 65 ms 120648 KB Output is correct
142 Correct 65 ms 120976 KB Output is correct
143 Correct 64 ms 120648 KB Output is correct
144 Correct 64 ms 122472 KB Output is correct
145 Correct 72 ms 120724 KB Output is correct
146 Correct 75 ms 126852 KB Output is correct
147 Correct 78 ms 122344 KB Output is correct
148 Correct 71 ms 120240 KB Output is correct
149 Correct 72 ms 127744 KB Output is correct
150 Correct 80 ms 129348 KB Output is correct
151 Correct 68 ms 126176 KB Output is correct
152 Correct 387 ms 193104 KB Output is correct
153 Correct 399 ms 197364 KB Output is correct
154 Correct 381 ms 188936 KB Output is correct
155 Correct 437 ms 242200 KB Output is correct
156 Correct 383 ms 196188 KB Output is correct
157 Correct 341 ms 176880 KB Output is correct
158 Correct 391 ms 218104 KB Output is correct
159 Correct 545 ms 362016 KB Output is correct
160 Correct 526 ms 341628 KB Output is correct
161 Correct 297 ms 171076 KB Output is correct
162 Correct 336 ms 183460 KB Output is correct