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Submission #666455

# Submission time Handle Problem Language Result Execution time Memory
666455 2022-11-28T16:24:31 Z MilosMilutinovic The short shank; Redemption (BOI21_prison) C++17
100 / 100
 1543 ms 111124 KB 
/**
 *    author:  wxhtzdy
 *    created: 28.11.2022 15:11:47
**/
#include <bits/stdc++.h>

using namespace std;

int readint() {
  char c = getchar();
  while (c < '0' || c > '9') {
    c = getchar();
  }
  int x = 0;
  while (c >= '0' && c <= '9') {
    x = x * 10 + (c - '0');
    c = getchar();
  }
  return x;
}

const int N = 2000005;

int n, d, t;
int a[N];
int add[4 * N];
int mx[4 * N];
int idx[4 * N];
pair<int, int> mn[4 * N];
int prv[N];

void Build(int x, int l, int r) {
  idx[x] = l;
  if (l == r) {
    mn[x] = make_pair(prv[l] == -1 ? n + 1 : prv[l], l);
    return;
  }
  int y = (l + r) >> 1;
  int z = x + 2 * (y - l + 1);
  Build(x + 1, l, y);
  Build(z, y + 1, r);
  mn[x] = min(mn[x + 1], mn[z]);
}

void Modify(int x, int l, int r, int ll, int rr, int v) {
  if (ll <= l && r <= rr) {
    add[x] += v;
    mx[x] += v;
    return;
  }  
  if (l > rr || r < ll) {
    return;
  }
  int y = (l + r) >> 1;
  int z = x + 2 * (y - l + 1);
  if (add[x] != 0) {
    mx[x + 1] += add[x];
    mx[z] += add[x];
    add[x + 1] += add[x];
    add[z] += add[x];
    add[x] = 0;
  }
  Modify(x + 1, l, y, ll, rr, v);
  Modify(z, y + 1, r, ll, rr, v);
  if (mx[x + 1] >= mx[z]) {
    mx[x] = mx[x + 1];
    idx[x] = idx[x + 1];
  } else {
    mx[x] = mx[z];
    idx[x] = idx[z];
  }
}

pair<int, int> Query(int x, int l, int r, int ll, int rr) {
  if (ll <= l && r <= rr) {
    return mn[x];
  }
  int y = (l + r) >> 1;
  int z = x + 2 * (y - l + 1);
  if (rr <= y) {
    return Query(x + 1, l, y, ll, rr);      
  } else if (ll > y) {
    return Query(z, y + 1, r, ll, rr);
  } else {
    return min(Query(x + 1, l, y, ll, rr), Query(z, y + 1, r, ll, rr));
  }
}

void Remove(int x, int l, int r, int i) {
  if (l == r) {
    mn[x] = make_pair(n + 1, l);
    return;
  }
  int y = (l + r) >> 1;
  int z = x + 2 * (y - l + 1);
  if (i <= y) {
    Remove(x + 1, l, y, i);
  } else {
    Remove(z, y + 1, r, i);
  }
  mn[x] = min(mn[x + 1], mn[z]);
}


int main() {
  n = readint();
  d = readint();
  t = readint();   
  for (int i = 0; i < n; i++) {
    a[i] = readint();
  }
  vector<int> stk;
  for (int i = 0; i < n; i++) {
    while (!stk.empty() && a[stk.back()] + i - stk.back() > t) {
      stk.pop_back();
    }
    while (!stk.empty() && a[stk.back()] - stk.back() > a[i] - i) {
      stk.pop_back();
    }      
    prv[i] = (a[i] <= t ? i : (stk.empty() ? -1 : stk.back()));
    stk.push_back(i);
  }
  Build(0, 0, n - 1);
  int ans = 0;
  for (int i = 0; i < n; i++) {
    if (prv[i] != -1) {
      ans += 1;
      if (prv[i] < i) {
        Modify(0, 0, n - 1, prv[i], i - 1, +1);
      } 
    }  
  }
  while (d--) {
    int i = idx[0];
    ans -= mx[0];
    while (true) {
      pair<int, int> p = Query(0, 0, n - 1, i + 1, n - 1);
      if (p.first <= i) {
        Modify(0, 0, n - 1, p.first, p.second - 1, -1);
        Remove(0, 0, n - 1, p.second);
      } else {
        break;
      }                      
    }
  }
  printf("%d", ans);
  return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 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 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 92 ms 23708 KB Output is correct
3 Correct 75 ms 23748 KB Output is correct
4 Correct 106 ms 24276 KB Output is correct
5 Correct 108 ms 23800 KB Output is correct
6 Correct 106 ms 21960 KB Output is correct
7 Correct 427 ms 23800 KB Output is correct
8 Correct 123 ms 23588 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 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 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 1 ms 532 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 2 ms 468 KB Output is correct
35 Correct 2 ms 468 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 15 ms 3776 KB Output is correct
3 Correct 13 ms 3796 KB Output is correct
4 Correct 35 ms 3796 KB Output is correct
5 Correct 39 ms 3864 KB Output is correct
6 Correct 42 ms 3796 KB Output is correct
7 Correct 15 ms 3572 KB Output is correct
8 Correct 15 ms 3412 KB Output is correct
9 Correct 62 ms 3940 KB Output is correct
10 Correct 10 ms 3796 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 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 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 1 ms 532 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 2 ms 468 KB Output is correct
35 Correct 2 ms 468 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 15 ms 3776 KB Output is correct
38 Correct 13 ms 3796 KB Output is correct
39 Correct 35 ms 3796 KB Output is correct
40 Correct 39 ms 3864 KB Output is correct
41 Correct 42 ms 3796 KB Output is correct
42 Correct 15 ms 3572 KB Output is correct
43 Correct 15 ms 3412 KB Output is correct
44 Correct 62 ms 3940 KB Output is correct
45 Correct 10 ms 3796 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 0 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 0 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 0 ms 340 KB Output is correct
55 Correct 0 ms 340 KB Output is correct
56 Correct 0 ms 340 KB Output is correct
57 Correct 1 ms 468 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 2 ms 468 KB Output is correct
60 Correct 2 ms 468 KB Output is correct
61 Correct 2 ms 468 KB Output is correct
62 Correct 1 ms 468 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 1 ms 468 KB Output is correct
65 Correct 1 ms 468 KB Output is correct
66 Correct 1 ms 472 KB Output is correct
67 Correct 1 ms 472 KB Output is correct
68 Correct 2 ms 476 KB Output is correct
69 Correct 2 ms 476 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 15 ms 3784 KB Output is correct
72 Correct 13 ms 3800 KB Output is correct
73 Correct 33 ms 3836 KB Output is correct
74 Correct 52 ms 3860 KB Output is correct
75 Correct 40 ms 3868 KB Output is correct
76 Correct 15 ms 3544 KB Output is correct
77 Correct 14 ms 3384 KB Output is correct
78 Correct 57 ms 3836 KB Output is correct
79 Correct 11 ms 3876 KB Output is correct
80 Correct 21 ms 3804 KB Output is correct
81 Correct 29 ms 3824 KB Output is correct
82 Correct 26 ms 3864 KB Output is correct
83 Correct 35 ms 3804 KB Output is correct
84 Correct 31 ms 3852 KB Output is correct
85 Correct 47 ms 3908 KB Output is correct
86 Correct 32 ms 3828 KB Output is correct
87 Correct 23 ms 3540 KB Output is correct
88 Correct 48 ms 3860 KB Output is correct
89 Correct 44 ms 3848 KB Output is correct
90 Correct 35 ms 3796 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 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 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 92 ms 23708 KB Output is correct
14 Correct 75 ms 23748 KB Output is correct
15 Correct 106 ms 24276 KB Output is correct
16 Correct 108 ms 23800 KB Output is correct
17 Correct 106 ms 21960 KB Output is correct
18 Correct 427 ms 23800 KB Output is correct
19 Correct 123 ms 23588 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 2 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 2 ms 468 KB Output is correct
36 Correct 1 ms 532 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 2 ms 468 KB Output is correct
43 Correct 2 ms 468 KB Output is correct
44 Correct 0 ms 340 KB Output is correct
45 Correct 15 ms 3776 KB Output is correct
46 Correct 13 ms 3796 KB Output is correct
47 Correct 35 ms 3796 KB Output is correct
48 Correct 39 ms 3864 KB Output is correct
49 Correct 42 ms 3796 KB Output is correct
50 Correct 15 ms 3572 KB Output is correct
51 Correct 15 ms 3412 KB Output is correct
52 Correct 62 ms 3940 KB Output is correct
53 Correct 10 ms 3796 KB Output is correct
54 Correct 0 ms 340 KB Output is correct
55 Correct 0 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 0 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 0 ms 340 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 0 ms 340 KB Output is correct
63 Correct 0 ms 340 KB Output is correct
64 Correct 0 ms 340 KB Output is correct
65 Correct 1 ms 468 KB Output is correct
66 Correct 1 ms 468 KB Output is correct
67 Correct 2 ms 468 KB Output is correct
68 Correct 2 ms 468 KB Output is correct
69 Correct 2 ms 468 KB Output is correct
70 Correct 1 ms 468 KB Output is correct
71 Correct 1 ms 468 KB Output is correct
72 Correct 1 ms 468 KB Output is correct
73 Correct 1 ms 468 KB Output is correct
74 Correct 1 ms 472 KB Output is correct
75 Correct 1 ms 472 KB Output is correct
76 Correct 2 ms 476 KB Output is correct
77 Correct 2 ms 476 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 15 ms 3784 KB Output is correct
80 Correct 13 ms 3800 KB Output is correct
81 Correct 33 ms 3836 KB Output is correct
82 Correct 52 ms 3860 KB Output is correct
83 Correct 40 ms 3868 KB Output is correct
84 Correct 15 ms 3544 KB Output is correct
85 Correct 14 ms 3384 KB Output is correct
86 Correct 57 ms 3836 KB Output is correct
87 Correct 11 ms 3876 KB Output is correct
88 Correct 21 ms 3804 KB Output is correct
89 Correct 29 ms 3824 KB Output is correct
90 Correct 26 ms 3864 KB Output is correct
91 Correct 35 ms 3804 KB Output is correct
92 Correct 31 ms 3852 KB Output is correct
93 Correct 47 ms 3908 KB Output is correct
94 Correct 32 ms 3828 KB Output is correct
95 Correct 23 ms 3540 KB Output is correct
96 Correct 48 ms 3860 KB Output is correct
97 Correct 44 ms 3848 KB Output is correct
98 Correct 35 ms 3796 KB Output is correct
99 Correct 0 ms 340 KB Output is correct
100 Correct 0 ms 340 KB Output is correct
101 Correct 0 ms 340 KB Output is correct
102 Correct 1 ms 340 KB Output is correct
103 Correct 1 ms 340 KB Output is correct
104 Correct 1 ms 340 KB Output is correct
105 Correct 1 ms 340 KB Output is correct
106 Correct 0 ms 340 KB Output is correct
107 Correct 1 ms 340 KB Output is correct
108 Correct 0 ms 340 KB Output is correct
109 Correct 1 ms 340 KB Output is correct
110 Correct 0 ms 340 KB Output is correct
111 Correct 90 ms 23744 KB Output is correct
112 Correct 81 ms 23764 KB Output is correct
113 Correct 110 ms 24324 KB Output is correct
114 Correct 102 ms 23760 KB Output is correct
115 Correct 106 ms 22028 KB Output is correct
116 Correct 430 ms 23740 KB Output is correct
117 Correct 117 ms 23500 KB Output is correct
118 Correct 1 ms 468 KB Output is correct
119 Correct 1 ms 468 KB Output is correct
120 Correct 1 ms 468 KB Output is correct
121 Correct 2 ms 468 KB Output is correct
122 Correct 2 ms 468 KB Output is correct
123 Correct 1 ms 468 KB Output is correct
124 Correct 1 ms 468 KB Output is correct
125 Correct 1 ms 468 KB Output is correct
126 Correct 1 ms 468 KB Output is correct
127 Correct 1 ms 468 KB Output is correct
128 Correct 1 ms 468 KB Output is correct
129 Correct 2 ms 468 KB Output is correct
130 Correct 2 ms 468 KB Output is correct
131 Correct 0 ms 340 KB Output is correct
132 Correct 14 ms 3764 KB Output is correct
133 Correct 13 ms 3872 KB Output is correct
134 Correct 34 ms 3796 KB Output is correct
135 Correct 39 ms 3836 KB Output is correct
136 Correct 41 ms 3856 KB Output is correct
137 Correct 15 ms 3492 KB Output is correct
138 Correct 14 ms 3388 KB Output is correct
139 Correct 57 ms 3784 KB Output is correct
140 Correct 10 ms 3796 KB Output is correct
141 Correct 20 ms 3852 KB Output is correct
142 Correct 29 ms 3852 KB Output is correct
143 Correct 25 ms 3764 KB Output is correct
144 Correct 35 ms 3924 KB Output is correct
145 Correct 34 ms 3796 KB Output is correct
146 Correct 46 ms 3916 KB Output is correct
147 Correct 32 ms 3796 KB Output is correct
148 Correct 23 ms 3536 KB Output is correct
149 Correct 47 ms 3796 KB Output is correct
150 Correct 44 ms 3792 KB Output is correct
151 Correct 35 ms 3796 KB Output is correct
152 Correct 385 ms 94128 KB Output is correct
153 Correct 417 ms 94288 KB Output is correct
154 Correct 365 ms 94156 KB Output is correct
155 Correct 826 ms 94948 KB Output is correct
156 Correct 801 ms 94316 KB Output is correct
157 Correct 307 ms 82644 KB Output is correct
158 Correct 550 ms 89036 KB Output is correct
159 Correct 1543 ms 94272 KB Output is correct
160 Correct 1104 ms 111124 KB Output is correct
161 Correct 583 ms 106300 KB Output is correct
162 Correct 422 ms 107960 KB Output is correct