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답안 #854320

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
854320 2023-09-26T18:34:19 Z mychecksedad The short shank; Redemption (BOI21_prison) C++17
100 / 100
 1884 ms 500560 KB 
/* Author : Mychecksdead  */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
const int N = 9e6+100, M = 2e6+10, K = 22;


int n, d, et, a[M], P[M], ans = 0, T[N], lazy[N];
vector<int> V[N];
vector<bool> removed(M);
void build(int l, int r, int k){
  if(l == r){
    T[k] = lazy[k] = 0;
    return;
  }
  int m = l+r>>1;
  build(l, m, k<<1);
  build(m+1, r, k<<1|1);
  T[k] = lazy[k] = 0;
}
void push(int k){
  if(lazy[k] != 0){
    lazy[k<<1] += lazy[k];
    lazy[k<<1|1] += lazy[k];
    T[k<<1] += lazy[k];
    T[k<<1|1] += lazy[k];
    lazy[k] = 0;
  }
}
void update(int l, int r, int ql, int qr, int k, int val, int pushed){
  if(ql > r || l > qr) return;
  if(ql <= l && r <= qr){
    T[k] += val;
    lazy[k] += val;
    if(pushed != -1) V[k].pb(pushed);
    return;
  }
  push(k);
  int m = l+r>>1;
  update(l, m, ql, qr, k<<1, val, pushed);
  update(m+1, r, ql, qr, k<<1|1, val, pushed);
  T[k] = max(T[k<<1], T[k<<1|1]);
}
pair<int, int> get_max(int l, int r, int k){
  if(l == r) return {l, T[k]};
  int m = l + r >> 1;
  push(k);
  if(T[k<<1] > T[k<<1|1])
    return get_max(l, m, k<<1);
  return get_max(m + 1, r, k<<1|1);
}

void rem(int l, int r, int p, int k){
  if(l > p || r < p) return;
  if(l == r){
    for(auto id: V[k]) if(!removed[id]){
      removed[id] = 1;
      update(1, n - 1, P[id], id - 1, 1, -1, -1);
    }
    V[k].clear();
    return;
  }
  for(auto id: V[k]) if(!removed[id]){
    removed[id] = 1;
    update(1, n - 1, P[id], id - 1, 1, -1, -1);
  }
  V[k].clear();
  int m = l + r >> 1;
  push(k);
  rem(l, m, p, k<<1);
  rem(m+1, r, p, k<<1|1);
}

void solve(){
  cin >> n >> d >> et;
  ans = n;
  for(int i = 1; i <= n; ++i){
    cin >> a[i];
    a[i] -= i;
  }
  deque<int> q;
  for(int i = 1; i <= n; ++i){
    if(a[i] + i <= et){
      P[i] = i;
      q.pb(i);
    }else{
      while(!q.empty() && a[q.back()] + i > et){
        q.pop_back();
      }
      if(q.empty()) P[i] = -1, --ans;
      else P[i] = q.back();
    }
  }
  build(1, n - 1, 1);
  for(int i = 1; i <= n; ++i){
    if(P[i] != i && P[i] != -1){
      int l = P[i], r = i - 1;
      update(1, n - 1, l, r, 1, 1, i);
    }
  }

  while(d--){
    pair<int, int> pos = get_max(1, n - 1, 1);
    ans -= pos.second;
    rem(1, n - 1, pos.first, 1);
  }


  cout << ans;
}



int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  while(tt--){
    solve();
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
}

Compilation message

prison.cpp: In function 'void build(int, int, int)':
prison.cpp:21:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   21 |   int m = l+r>>1;
      |           ~^~
prison.cpp: In function 'void update(int, int, int, int, int, int, int)':
prison.cpp:44:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   44 |   int m = l+r>>1;
      |           ~^~
prison.cpp: In function 'std::pair<int, int> get_max(int, int, int)':
prison.cpp:51:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   51 |   int m = l + r >> 1;
      |           ~~^~~
prison.cpp: In function 'void rem(int, int, int, int)':
prison.cpp:73:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   73 |   int m = l + r >> 1;
      |           ~~^~~
prison.cpp: In function 'int main()':
prison.cpp:121:15: warning: unused variable 'aa' [-Wunused-variable]
  121 |   int tt = 1, aa;
      |               ^~

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 218192 KB Output is correct
2 Correct 45 ms 218192 KB Output is correct
3 Correct 46 ms 218192 KB Output is correct
4 Correct 46 ms 218192 KB Output is correct
5 Correct 45 ms 218584 KB Output is correct
6 Correct 45 ms 218336 KB Output is correct
7 Correct 45 ms 218192 KB Output is correct
8 Correct 47 ms 218192 KB Output is correct
9 Correct 45 ms 218200 KB Output is correct
10 Correct 45 ms 218192 KB Output is correct
11 Correct 44 ms 218236 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 218192 KB Output is correct
2 Correct 156 ms 239628 KB Output is correct
3 Correct 133 ms 237392 KB Output is correct
4 Correct 167 ms 241744 KB Output is correct
5 Correct 187 ms 245072 KB Output is correct
6 Correct 164 ms 240316 KB Output is correct
7 Correct 491 ms 279116 KB Output is correct
8 Correct 180 ms 242420 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 218192 KB Output is correct
2 Correct 45 ms 218192 KB Output is correct
3 Correct 46 ms 218192 KB Output is correct
4 Correct 46 ms 218192 KB Output is correct
5 Correct 45 ms 218584 KB Output is correct
6 Correct 45 ms 218336 KB Output is correct
7 Correct 45 ms 218192 KB Output is correct
8 Correct 47 ms 218192 KB Output is correct
9 Correct 45 ms 218200 KB Output is correct
10 Correct 45 ms 218192 KB Output is correct
11 Correct 44 ms 218236 KB Output is correct
12 Correct 44 ms 218192 KB Output is correct
13 Correct 45 ms 218332 KB Output is correct
14 Correct 46 ms 218192 KB Output is correct
15 Correct 45 ms 218192 KB Output is correct
16 Correct 46 ms 218192 KB Output is correct
17 Correct 45 ms 218192 KB Output is correct
18 Correct 46 ms 218192 KB Output is correct
19 Correct 48 ms 218328 KB Output is correct
20 Correct 44 ms 218192 KB Output is correct
21 Correct 45 ms 218200 KB Output is correct
22 Correct 45 ms 218192 KB Output is correct
23 Correct 46 ms 218448 KB Output is correct
24 Correct 46 ms 218456 KB Output is correct
25 Correct 49 ms 218452 KB Output is correct
26 Correct 46 ms 218456 KB Output is correct
27 Correct 46 ms 218452 KB Output is correct
28 Correct 45 ms 218448 KB Output is correct
29 Correct 45 ms 218456 KB Output is correct
30 Correct 47 ms 218448 KB Output is correct
31 Correct 46 ms 218448 KB Output is correct
32 Correct 45 ms 218456 KB Output is correct
33 Correct 47 ms 218448 KB Output is correct
34 Correct 46 ms 218424 KB Output is correct
35 Correct 47 ms 218456 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 218192 KB Output is correct
2 Correct 68 ms 221960 KB Output is correct
3 Correct 60 ms 221776 KB Output is correct
4 Correct 84 ms 224848 KB Output is correct
5 Correct 88 ms 225744 KB Output is correct
6 Correct 89 ms 225872 KB Output is correct
7 Correct 62 ms 221780 KB Output is correct
8 Correct 66 ms 221776 KB Output is correct
9 Correct 104 ms 228684 KB Output is correct
10 Correct 58 ms 221280 KB Output is correct

Subtask #5
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 218192 KB Output is correct
2 Correct 45 ms 218192 KB Output is correct
3 Correct 46 ms 218192 KB Output is correct
4 Correct 46 ms 218192 KB Output is correct
5 Correct 45 ms 218584 KB Output is correct
6 Correct 45 ms 218336 KB Output is correct
7 Correct 45 ms 218192 KB Output is correct
8 Correct 47 ms 218192 KB Output is correct
9 Correct 45 ms 218200 KB Output is correct
10 Correct 45 ms 218192 KB Output is correct
11 Correct 44 ms 218236 KB Output is correct
12 Correct 44 ms 218192 KB Output is correct
13 Correct 45 ms 218332 KB Output is correct
14 Correct 46 ms 218192 KB Output is correct
15 Correct 45 ms 218192 KB Output is correct
16 Correct 46 ms 218192 KB Output is correct
17 Correct 45 ms 218192 KB Output is correct
18 Correct 46 ms 218192 KB Output is correct
19 Correct 48 ms 218328 KB Output is correct
20 Correct 44 ms 218192 KB Output is correct
21 Correct 45 ms 218200 KB Output is correct
22 Correct 45 ms 218192 KB Output is correct
23 Correct 46 ms 218448 KB Output is correct
24 Correct 46 ms 218456 KB Output is correct
25 Correct 49 ms 218452 KB Output is correct
26 Correct 46 ms 218456 KB Output is correct
27 Correct 46 ms 218452 KB Output is correct
28 Correct 45 ms 218448 KB Output is correct
29 Correct 45 ms 218456 KB Output is correct
30 Correct 47 ms 218448 KB Output is correct
31 Correct 46 ms 218448 KB Output is correct
32 Correct 45 ms 218456 KB Output is correct
33 Correct 47 ms 218448 KB Output is correct
34 Correct 46 ms 218424 KB Output is correct
35 Correct 47 ms 218456 KB Output is correct
36 Correct 45 ms 218192 KB Output is correct
37 Correct 68 ms 221960 KB Output is correct
38 Correct 60 ms 221776 KB Output is correct
39 Correct 84 ms 224848 KB Output is correct
40 Correct 88 ms 225744 KB Output is correct
41 Correct 89 ms 225872 KB Output is correct
42 Correct 62 ms 221780 KB Output is correct
43 Correct 66 ms 221776 KB Output is correct
44 Correct 104 ms 228684 KB Output is correct
45 Correct 58 ms 221280 KB Output is correct
46 Correct 45 ms 218192 KB Output is correct
47 Correct 44 ms 218192 KB Output is correct
48 Correct 46 ms 218204 KB Output is correct
49 Correct 46 ms 218192 KB Output is correct
50 Correct 45 ms 218192 KB Output is correct
51 Correct 44 ms 218196 KB Output is correct
52 Correct 44 ms 218192 KB Output is correct
53 Correct 44 ms 218192 KB Output is correct
54 Correct 45 ms 218220 KB Output is correct
55 Correct 45 ms 218192 KB Output is correct
56 Correct 45 ms 218224 KB Output is correct
57 Correct 46 ms 218448 KB Output is correct
58 Correct 46 ms 218452 KB Output is correct
59 Correct 46 ms 218448 KB Output is correct
60 Correct 47 ms 218448 KB Output is correct
61 Correct 46 ms 218252 KB Output is correct
62 Correct 50 ms 218448 KB Output is correct
63 Correct 47 ms 218448 KB Output is correct
64 Correct 46 ms 218448 KB Output is correct
65 Correct 45 ms 218448 KB Output is correct
66 Correct 46 ms 218192 KB Output is correct
67 Correct 47 ms 218452 KB Output is correct
68 Correct 47 ms 218364 KB Output is correct
69 Correct 46 ms 218488 KB Output is correct
70 Correct 45 ms 218192 KB Output is correct
71 Correct 62 ms 222068 KB Output is correct
72 Correct 60 ms 221776 KB Output is correct
73 Correct 82 ms 224848 KB Output is correct
74 Correct 88 ms 225748 KB Output is correct
75 Correct 88 ms 225996 KB Output is correct
76 Correct 61 ms 222032 KB Output is correct
77 Correct 62 ms 221776 KB Output is correct
78 Correct 106 ms 228740 KB Output is correct
79 Correct 58 ms 221264 KB Output is correct
80 Correct 64 ms 221780 KB Output is correct
81 Correct 73 ms 222072 KB Output is correct
82 Correct 69 ms 221776 KB Output is correct
83 Correct 84 ms 224396 KB Output is correct
84 Correct 71 ms 222288 KB Output is correct
85 Correct 91 ms 225996 KB Output is correct
86 Correct 76 ms 222800 KB Output is correct
87 Correct 65 ms 221264 KB Output is correct
88 Correct 96 ms 226992 KB Output is correct
89 Correct 84 ms 225360 KB Output is correct
90 Correct 78 ms 223824 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 218192 KB Output is correct
2 Correct 45 ms 218192 KB Output is correct
3 Correct 46 ms 218192 KB Output is correct
4 Correct 46 ms 218192 KB Output is correct
5 Correct 45 ms 218584 KB Output is correct
6 Correct 45 ms 218336 KB Output is correct
7 Correct 45 ms 218192 KB Output is correct
8 Correct 47 ms 218192 KB Output is correct
9 Correct 45 ms 218200 KB Output is correct
10 Correct 45 ms 218192 KB Output is correct
11 Correct 44 ms 218236 KB Output is correct
12 Correct 46 ms 218192 KB Output is correct
13 Correct 156 ms 239628 KB Output is correct
14 Correct 133 ms 237392 KB Output is correct
15 Correct 167 ms 241744 KB Output is correct
16 Correct 187 ms 245072 KB Output is correct
17 Correct 164 ms 240316 KB Output is correct
18 Correct 491 ms 279116 KB Output is correct
19 Correct 180 ms 242420 KB Output is correct
20 Correct 44 ms 218192 KB Output is correct
21 Correct 45 ms 218332 KB Output is correct
22 Correct 46 ms 218192 KB Output is correct
23 Correct 45 ms 218192 KB Output is correct
24 Correct 46 ms 218192 KB Output is correct
25 Correct 45 ms 218192 KB Output is correct
26 Correct 46 ms 218192 KB Output is correct
27 Correct 48 ms 218328 KB Output is correct
28 Correct 44 ms 218192 KB Output is correct
29 Correct 45 ms 218200 KB Output is correct
30 Correct 45 ms 218192 KB Output is correct
31 Correct 46 ms 218448 KB Output is correct
32 Correct 46 ms 218456 KB Output is correct
33 Correct 49 ms 218452 KB Output is correct
34 Correct 46 ms 218456 KB Output is correct
35 Correct 46 ms 218452 KB Output is correct
36 Correct 45 ms 218448 KB Output is correct
37 Correct 45 ms 218456 KB Output is correct
38 Correct 47 ms 218448 KB Output is correct
39 Correct 46 ms 218448 KB Output is correct
40 Correct 45 ms 218456 KB Output is correct
41 Correct 47 ms 218448 KB Output is correct
42 Correct 46 ms 218424 KB Output is correct
43 Correct 47 ms 218456 KB Output is correct
44 Correct 45 ms 218192 KB Output is correct
45 Correct 68 ms 221960 KB Output is correct
46 Correct 60 ms 221776 KB Output is correct
47 Correct 84 ms 224848 KB Output is correct
48 Correct 88 ms 225744 KB Output is correct
49 Correct 89 ms 225872 KB Output is correct
50 Correct 62 ms 221780 KB Output is correct
51 Correct 66 ms 221776 KB Output is correct
52 Correct 104 ms 228684 KB Output is correct
53 Correct 58 ms 221280 KB Output is correct
54 Correct 45 ms 218192 KB Output is correct
55 Correct 44 ms 218192 KB Output is correct
56 Correct 46 ms 218204 KB Output is correct
57 Correct 46 ms 218192 KB Output is correct
58 Correct 45 ms 218192 KB Output is correct
59 Correct 44 ms 218196 KB Output is correct
60 Correct 44 ms 218192 KB Output is correct
61 Correct 44 ms 218192 KB Output is correct
62 Correct 45 ms 218220 KB Output is correct
63 Correct 45 ms 218192 KB Output is correct
64 Correct 45 ms 218224 KB Output is correct
65 Correct 46 ms 218448 KB Output is correct
66 Correct 46 ms 218452 KB Output is correct
67 Correct 46 ms 218448 KB Output is correct
68 Correct 47 ms 218448 KB Output is correct
69 Correct 46 ms 218252 KB Output is correct
70 Correct 50 ms 218448 KB Output is correct
71 Correct 47 ms 218448 KB Output is correct
72 Correct 46 ms 218448 KB Output is correct
73 Correct 45 ms 218448 KB Output is correct
74 Correct 46 ms 218192 KB Output is correct
75 Correct 47 ms 218452 KB Output is correct
76 Correct 47 ms 218364 KB Output is correct
77 Correct 46 ms 218488 KB Output is correct
78 Correct 45 ms 218192 KB Output is correct
79 Correct 62 ms 222068 KB Output is correct
80 Correct 60 ms 221776 KB Output is correct
81 Correct 82 ms 224848 KB Output is correct
82 Correct 88 ms 225748 KB Output is correct
83 Correct 88 ms 225996 KB Output is correct
84 Correct 61 ms 222032 KB Output is correct
85 Correct 62 ms 221776 KB Output is correct
86 Correct 106 ms 228740 KB Output is correct
87 Correct 58 ms 221264 KB Output is correct
88 Correct 64 ms 221780 KB Output is correct
89 Correct 73 ms 222072 KB Output is correct
90 Correct 69 ms 221776 KB Output is correct
91 Correct 84 ms 224396 KB Output is correct
92 Correct 71 ms 222288 KB Output is correct
93 Correct 91 ms 225996 KB Output is correct
94 Correct 76 ms 222800 KB Output is correct
95 Correct 65 ms 221264 KB Output is correct
96 Correct 96 ms 226992 KB Output is correct
97 Correct 84 ms 225360 KB Output is correct
98 Correct 78 ms 223824 KB Output is correct
99 Correct 44 ms 218192 KB Output is correct
100 Correct 45 ms 218196 KB Output is correct
101 Correct 45 ms 218196 KB Output is correct
102 Correct 46 ms 218204 KB Output is correct
103 Correct 47 ms 218188 KB Output is correct
104 Correct 45 ms 218236 KB Output is correct
105 Correct 45 ms 218192 KB Output is correct
106 Correct 47 ms 218336 KB Output is correct
107 Correct 48 ms 218316 KB Output is correct
108 Correct 45 ms 218192 KB Output is correct
109 Correct 46 ms 218196 KB Output is correct
110 Correct 45 ms 218192 KB Output is correct
111 Correct 149 ms 239424 KB Output is correct
112 Correct 129 ms 237396 KB Output is correct
113 Correct 174 ms 241676 KB Output is correct
114 Correct 187 ms 245072 KB Output is correct
115 Correct 163 ms 240492 KB Output is correct
116 Correct 480 ms 279180 KB Output is correct
117 Correct 180 ms 242736 KB Output is correct
118 Correct 49 ms 218660 KB Output is correct
119 Correct 46 ms 218448 KB Output is correct
120 Correct 46 ms 218448 KB Output is correct
121 Correct 46 ms 218448 KB Output is correct
122 Correct 46 ms 218448 KB Output is correct
123 Correct 50 ms 218448 KB Output is correct
124 Correct 45 ms 218452 KB Output is correct
125 Correct 45 ms 218388 KB Output is correct
126 Correct 45 ms 218452 KB Output is correct
127 Correct 47 ms 218444 KB Output is correct
128 Correct 47 ms 218712 KB Output is correct
129 Correct 45 ms 218456 KB Output is correct
130 Correct 46 ms 218460 KB Output is correct
131 Correct 45 ms 218192 KB Output is correct
132 Correct 63 ms 222200 KB Output is correct
133 Correct 60 ms 221740 KB Output is correct
134 Correct 83 ms 224708 KB Output is correct
135 Correct 89 ms 225804 KB Output is correct
136 Correct 87 ms 225996 KB Output is correct
137 Correct 61 ms 221892 KB Output is correct
138 Correct 62 ms 222032 KB Output is correct
139 Correct 110 ms 228768 KB Output is correct
140 Correct 58 ms 221264 KB Output is correct
141 Correct 64 ms 221776 KB Output is correct
142 Correct 70 ms 222032 KB Output is correct
143 Correct 68 ms 221776 KB Output is correct
144 Correct 84 ms 224592 KB Output is correct
145 Correct 72 ms 222288 KB Output is correct
146 Correct 91 ms 225996 KB Output is correct
147 Correct 78 ms 222960 KB Output is correct
148 Correct 66 ms 221264 KB Output is correct
149 Correct 93 ms 226992 KB Output is correct
150 Correct 83 ms 225360 KB Output is correct
151 Correct 78 ms 223828 KB Output is correct
152 Correct 489 ms 299280 KB Output is correct
153 Correct 520 ms 301876 KB Output is correct
154 Correct 470 ms 297084 KB Output is correct
155 Correct 1073 ms 350864 KB Output is correct
156 Correct 873 ms 321568 KB Output is correct
157 Correct 398 ms 283984 KB Output is correct
158 Correct 665 ms 314664 KB Output is correct
159 Correct 1884 ms 500560 KB Output is correct
160 Correct 1140 ms 375040 KB Output is correct
161 Correct 639 ms 303440 KB Output is correct
162 Correct 520 ms 308648 KB Output is correct