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Submission #599113

# Submission time Handle Problem Language Result Execution time Memory
599113 2022-07-19T10:20:06 Z MohammadAghil The short shank; Redemption (BOI21_prison) C++17
100 / 100
 411 ms 324904 KB 
      #include <bits/stdc++.h>
//   #pragma GCC optimize ("Ofast,unroll-loops")
// #pragma GCC target ("avx2")
    using namespace std;
  typedef long long ll;
   typedef pair<int, int> pp;
    #define er(args ...) cerr << __LINE__ << ": ", err(new istringstream(string(#args)), args), cerr << endl
      #define per(i,r,l) for(int i = (r); i >= (l); i--)
        #define rep(i,l,r) for(int i = (l); i < (r); i++)
           #define all(x) begin(x), end(x)
              #define sz(x) (int)(x).size()
                  #define pb push_back
                      #define ss second
                           #define ff first
                                   void err(istringstream *iss){}template<typename T,typename ...Args> void err(istringstream *iss,const T &_val, const Args&...args){string _name;*iss>>_name;if(_name.back()==',')_name.pop_back();cerr<<_name<<" = "<<_val<<", ",err(iss,args...);}
void IOS(){
     cin.tie(0) -> sync_with_stdio(0);
     // #ifndef ONLINE_JUDGE
     //      freopen("in.in", "r", stdin);
     //      freopen("out.out", "w", stdout);
     // #endif
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll mod = 1e9 + 7, maxn = 2e6 + 5, lg = 22, inf = ll(1e9) + 5;
ll pw(ll a,ll b,ll md=mod){if(!b)return 1;ll k=pw(a,b>>1ll);return k*k%md*(b&1ll?a:1)%md;}

vector<int> adj[maxn];
int par[maxn], h[maxn];
pp ptr[maxn];
bool vis[maxn];

void dfs(int r){
     vis[r] = true, ptr[r] = {1, r};
     for(int c: adj[r]) h[c] = h[r] + 1, dfs(c), ptr[r] = max(ptr[r], {ptr[c].ff + 1, ptr[c].ss});
}

int main(){ IOS();
     int n, d, t; cin >> n >> d >> t;
     vector<int> a(n), e(n);
     rep(i,0,n) cin >> a[i], e[i] = t - a[i] + i;

     vector<bool> is(n);

     int mx = -1, ans = 0;
     rep(i,0,n){
          if(a[i] > t) {
               if(mx < i) ans++;
               else is[i] = true;
          }
          mx = max(mx, e[i]);
     }

     vector<int> stk;
     per(i,n-1,0){
          if(is[i]){
               par[i] = -1;
               if(sz(stk)) par[i] = stk.back(), adj[par[i]].pb(i);
               stk.pb(i);
          }else{
               while(sz(stk) && stk.back() <= e[i]) stk.pop_back();
          }
     }

     vector<vector<int>> q(n + 1);

     per(i,n-1,0) if(is[i]){
          if(!vis[i]) h[i] = 1, dfs(i), q[ptr[i].ff].pb(i);
     }


     per(i,n,1){
          for(int c: q[i]){
               int lst = -1, r = ptr[c].ss;
               while(r - par[c]){
                    ans++;
                    for(int t: adj[r]) if(t - lst){
                         q[ptr[t].ff].pb(t);
                    }
                    lst = r, r = par[r];
               }
               d--;
               if(!d) break;
          }
          if(!d) break; 
     }

     cout << n - ans << endl;
     return 0; 
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 47280 KB Output is correct
2 Correct 24 ms 47280 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 26 ms 47252 KB Output is correct
5 Correct 27 ms 47248 KB Output is correct
6 Correct 23 ms 47324 KB Output is correct
7 Correct 26 ms 47316 KB Output is correct
8 Correct 25 ms 47240 KB Output is correct
9 Correct 24 ms 47276 KB Output is correct
10 Correct 24 ms 47316 KB Output is correct
11 Correct 23 ms 47328 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 47280 KB Output is correct
2 Correct 121 ms 80760 KB Output is correct
3 Correct 103 ms 78460 KB Output is correct
4 Correct 103 ms 82684 KB Output is correct
5 Correct 94 ms 81228 KB Output is correct
6 Correct 94 ms 81716 KB Output is correct
7 Correct 130 ms 139636 KB Output is correct
8 Correct 107 ms 84772 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 47280 KB Output is correct
2 Correct 24 ms 47280 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 26 ms 47252 KB Output is correct
5 Correct 27 ms 47248 KB Output is correct
6 Correct 23 ms 47324 KB Output is correct
7 Correct 26 ms 47316 KB Output is correct
8 Correct 25 ms 47240 KB Output is correct
9 Correct 24 ms 47276 KB Output is correct
10 Correct 24 ms 47316 KB Output is correct
11 Correct 23 ms 47328 KB Output is correct
12 Correct 23 ms 47188 KB Output is correct
13 Correct 24 ms 47312 KB Output is correct
14 Correct 28 ms 47348 KB Output is correct
15 Correct 24 ms 47276 KB Output is correct
16 Correct 24 ms 47308 KB Output is correct
17 Correct 25 ms 47308 KB Output is correct
18 Correct 23 ms 47316 KB Output is correct
19 Correct 28 ms 47316 KB Output is correct
20 Correct 24 ms 47272 KB Output is correct
21 Correct 26 ms 47324 KB Output is correct
22 Correct 26 ms 47308 KB Output is correct
23 Correct 28 ms 47596 KB Output is correct
24 Correct 24 ms 47572 KB Output is correct
25 Correct 24 ms 47504 KB Output is correct
26 Correct 24 ms 47572 KB Output is correct
27 Correct 23 ms 47572 KB Output is correct
28 Correct 25 ms 47560 KB Output is correct
29 Correct 24 ms 47572 KB Output is correct
30 Correct 24 ms 47588 KB Output is correct
31 Correct 26 ms 47588 KB Output is correct
32 Correct 25 ms 47432 KB Output is correct
33 Correct 24 ms 47492 KB Output is correct
34 Correct 24 ms 47508 KB Output is correct
35 Correct 25 ms 47560 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 47264 KB Output is correct
2 Correct 34 ms 52648 KB Output is correct
3 Correct 35 ms 52300 KB Output is correct
4 Correct 40 ms 56064 KB Output is correct
5 Correct 38 ms 57732 KB Output is correct
6 Correct 40 ms 57912 KB Output is correct
7 Correct 33 ms 52556 KB Output is correct
8 Correct 40 ms 52236 KB Output is correct
9 Correct 41 ms 61020 KB Output is correct
10 Correct 32 ms 51780 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 47280 KB Output is correct
2 Correct 24 ms 47280 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 26 ms 47252 KB Output is correct
5 Correct 27 ms 47248 KB Output is correct
6 Correct 23 ms 47324 KB Output is correct
7 Correct 26 ms 47316 KB Output is correct
8 Correct 25 ms 47240 KB Output is correct
9 Correct 24 ms 47276 KB Output is correct
10 Correct 24 ms 47316 KB Output is correct
11 Correct 23 ms 47328 KB Output is correct
12 Correct 23 ms 47188 KB Output is correct
13 Correct 24 ms 47312 KB Output is correct
14 Correct 28 ms 47348 KB Output is correct
15 Correct 24 ms 47276 KB Output is correct
16 Correct 24 ms 47308 KB Output is correct
17 Correct 25 ms 47308 KB Output is correct
18 Correct 23 ms 47316 KB Output is correct
19 Correct 28 ms 47316 KB Output is correct
20 Correct 24 ms 47272 KB Output is correct
21 Correct 26 ms 47324 KB Output is correct
22 Correct 26 ms 47308 KB Output is correct
23 Correct 28 ms 47596 KB Output is correct
24 Correct 24 ms 47572 KB Output is correct
25 Correct 24 ms 47504 KB Output is correct
26 Correct 24 ms 47572 KB Output is correct
27 Correct 23 ms 47572 KB Output is correct
28 Correct 25 ms 47560 KB Output is correct
29 Correct 24 ms 47572 KB Output is correct
30 Correct 24 ms 47588 KB Output is correct
31 Correct 26 ms 47588 KB Output is correct
32 Correct 25 ms 47432 KB Output is correct
33 Correct 24 ms 47492 KB Output is correct
34 Correct 24 ms 47508 KB Output is correct
35 Correct 25 ms 47560 KB Output is correct
36 Correct 24 ms 47264 KB Output is correct
37 Correct 34 ms 52648 KB Output is correct
38 Correct 35 ms 52300 KB Output is correct
39 Correct 40 ms 56064 KB Output is correct
40 Correct 38 ms 57732 KB Output is correct
41 Correct 40 ms 57912 KB Output is correct
42 Correct 33 ms 52556 KB Output is correct
43 Correct 40 ms 52236 KB Output is correct
44 Correct 41 ms 61020 KB Output is correct
45 Correct 32 ms 51780 KB Output is correct
46 Correct 23 ms 47296 KB Output is correct
47 Correct 23 ms 47272 KB Output is correct
48 Correct 23 ms 47316 KB Output is correct
49 Correct 27 ms 47320 KB Output is correct
50 Correct 24 ms 47292 KB Output is correct
51 Correct 23 ms 47308 KB Output is correct
52 Correct 23 ms 47308 KB Output is correct
53 Correct 23 ms 47332 KB Output is correct
54 Correct 23 ms 47236 KB Output is correct
55 Correct 22 ms 47220 KB Output is correct
56 Correct 24 ms 47292 KB Output is correct
57 Correct 25 ms 47516 KB Output is correct
58 Correct 24 ms 47564 KB Output is correct
59 Correct 24 ms 47572 KB Output is correct
60 Correct 31 ms 47572 KB Output is correct
61 Correct 25 ms 47564 KB Output is correct
62 Correct 25 ms 47500 KB Output is correct
63 Correct 24 ms 47560 KB Output is correct
64 Correct 24 ms 47568 KB Output is correct
65 Correct 24 ms 47568 KB Output is correct
66 Correct 24 ms 47432 KB Output is correct
67 Correct 23 ms 47436 KB Output is correct
68 Correct 24 ms 47572 KB Output is correct
69 Correct 25 ms 47532 KB Output is correct
70 Correct 23 ms 47292 KB Output is correct
71 Correct 35 ms 52676 KB Output is correct
72 Correct 35 ms 52300 KB Output is correct
73 Correct 36 ms 56024 KB Output is correct
74 Correct 39 ms 57732 KB Output is correct
75 Correct 37 ms 57992 KB Output is correct
76 Correct 33 ms 52564 KB Output is correct
77 Correct 35 ms 52124 KB Output is correct
78 Correct 39 ms 61000 KB Output is correct
79 Correct 32 ms 51860 KB Output is correct
80 Correct 35 ms 52348 KB Output is correct
81 Correct 39 ms 52604 KB Output is correct
82 Correct 39 ms 52348 KB Output is correct
83 Correct 35 ms 54092 KB Output is correct
84 Correct 36 ms 52324 KB Output is correct
85 Correct 38 ms 58208 KB Output is correct
86 Correct 35 ms 53836 KB Output is correct
87 Correct 34 ms 51904 KB Output is correct
88 Correct 49 ms 59300 KB Output is correct
89 Correct 41 ms 60532 KB Output is correct
90 Correct 36 ms 57688 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 47280 KB Output is correct
2 Correct 24 ms 47280 KB Output is correct
3 Correct 24 ms 47292 KB Output is correct
4 Correct 26 ms 47252 KB Output is correct
5 Correct 27 ms 47248 KB Output is correct
6 Correct 23 ms 47324 KB Output is correct
7 Correct 26 ms 47316 KB Output is correct
8 Correct 25 ms 47240 KB Output is correct
9 Correct 24 ms 47276 KB Output is correct
10 Correct 24 ms 47316 KB Output is correct
11 Correct 23 ms 47328 KB Output is correct
12 Correct 26 ms 47280 KB Output is correct
13 Correct 121 ms 80760 KB Output is correct
14 Correct 103 ms 78460 KB Output is correct
15 Correct 103 ms 82684 KB Output is correct
16 Correct 94 ms 81228 KB Output is correct
17 Correct 94 ms 81716 KB Output is correct
18 Correct 130 ms 139636 KB Output is correct
19 Correct 107 ms 84772 KB Output is correct
20 Correct 23 ms 47188 KB Output is correct
21 Correct 24 ms 47312 KB Output is correct
22 Correct 28 ms 47348 KB Output is correct
23 Correct 24 ms 47276 KB Output is correct
24 Correct 24 ms 47308 KB Output is correct
25 Correct 25 ms 47308 KB Output is correct
26 Correct 23 ms 47316 KB Output is correct
27 Correct 28 ms 47316 KB Output is correct
28 Correct 24 ms 47272 KB Output is correct
29 Correct 26 ms 47324 KB Output is correct
30 Correct 26 ms 47308 KB Output is correct
31 Correct 28 ms 47596 KB Output is correct
32 Correct 24 ms 47572 KB Output is correct
33 Correct 24 ms 47504 KB Output is correct
34 Correct 24 ms 47572 KB Output is correct
35 Correct 23 ms 47572 KB Output is correct
36 Correct 25 ms 47560 KB Output is correct
37 Correct 24 ms 47572 KB Output is correct
38 Correct 24 ms 47588 KB Output is correct
39 Correct 26 ms 47588 KB Output is correct
40 Correct 25 ms 47432 KB Output is correct
41 Correct 24 ms 47492 KB Output is correct
42 Correct 24 ms 47508 KB Output is correct
43 Correct 25 ms 47560 KB Output is correct
44 Correct 24 ms 47264 KB Output is correct
45 Correct 34 ms 52648 KB Output is correct
46 Correct 35 ms 52300 KB Output is correct
47 Correct 40 ms 56064 KB Output is correct
48 Correct 38 ms 57732 KB Output is correct
49 Correct 40 ms 57912 KB Output is correct
50 Correct 33 ms 52556 KB Output is correct
51 Correct 40 ms 52236 KB Output is correct
52 Correct 41 ms 61020 KB Output is correct
53 Correct 32 ms 51780 KB Output is correct
54 Correct 23 ms 47296 KB Output is correct
55 Correct 23 ms 47272 KB Output is correct
56 Correct 23 ms 47316 KB Output is correct
57 Correct 27 ms 47320 KB Output is correct
58 Correct 24 ms 47292 KB Output is correct
59 Correct 23 ms 47308 KB Output is correct
60 Correct 23 ms 47308 KB Output is correct
61 Correct 23 ms 47332 KB Output is correct
62 Correct 23 ms 47236 KB Output is correct
63 Correct 22 ms 47220 KB Output is correct
64 Correct 24 ms 47292 KB Output is correct
65 Correct 25 ms 47516 KB Output is correct
66 Correct 24 ms 47564 KB Output is correct
67 Correct 24 ms 47572 KB Output is correct
68 Correct 31 ms 47572 KB Output is correct
69 Correct 25 ms 47564 KB Output is correct
70 Correct 25 ms 47500 KB Output is correct
71 Correct 24 ms 47560 KB Output is correct
72 Correct 24 ms 47568 KB Output is correct
73 Correct 24 ms 47568 KB Output is correct
74 Correct 24 ms 47432 KB Output is correct
75 Correct 23 ms 47436 KB Output is correct
76 Correct 24 ms 47572 KB Output is correct
77 Correct 25 ms 47532 KB Output is correct
78 Correct 23 ms 47292 KB Output is correct
79 Correct 35 ms 52676 KB Output is correct
80 Correct 35 ms 52300 KB Output is correct
81 Correct 36 ms 56024 KB Output is correct
82 Correct 39 ms 57732 KB Output is correct
83 Correct 37 ms 57992 KB Output is correct
84 Correct 33 ms 52564 KB Output is correct
85 Correct 35 ms 52124 KB Output is correct
86 Correct 39 ms 61000 KB Output is correct
87 Correct 32 ms 51860 KB Output is correct
88 Correct 35 ms 52348 KB Output is correct
89 Correct 39 ms 52604 KB Output is correct
90 Correct 39 ms 52348 KB Output is correct
91 Correct 35 ms 54092 KB Output is correct
92 Correct 36 ms 52324 KB Output is correct
93 Correct 38 ms 58208 KB Output is correct
94 Correct 35 ms 53836 KB Output is correct
95 Correct 34 ms 51904 KB Output is correct
96 Correct 49 ms 59300 KB Output is correct
97 Correct 41 ms 60532 KB Output is correct
98 Correct 36 ms 57688 KB Output is correct
99 Correct 22 ms 47316 KB Output is correct
100 Correct 22 ms 47332 KB Output is correct
101 Correct 21 ms 47264 KB Output is correct
102 Correct 23 ms 47280 KB Output is correct
103 Correct 21 ms 47316 KB Output is correct
104 Correct 22 ms 47332 KB Output is correct
105 Correct 22 ms 47316 KB Output is correct
106 Correct 23 ms 47292 KB Output is correct
107 Correct 28 ms 47284 KB Output is correct
108 Correct 23 ms 47280 KB Output is correct
109 Correct 25 ms 47244 KB Output is correct
110 Correct 23 ms 47280 KB Output is correct
111 Correct 110 ms 80788 KB Output is correct
112 Correct 106 ms 78556 KB Output is correct
113 Correct 105 ms 82728 KB Output is correct
114 Correct 102 ms 81188 KB Output is correct
115 Correct 105 ms 81720 KB Output is correct
116 Correct 138 ms 139676 KB Output is correct
117 Correct 104 ms 84720 KB Output is correct
118 Correct 25 ms 47556 KB Output is correct
119 Correct 29 ms 47604 KB Output is correct
120 Correct 26 ms 47556 KB Output is correct
121 Correct 25 ms 47552 KB Output is correct
122 Correct 23 ms 47568 KB Output is correct
123 Correct 24 ms 47500 KB Output is correct
124 Correct 28 ms 47508 KB Output is correct
125 Correct 24 ms 47528 KB Output is correct
126 Correct 25 ms 47572 KB Output is correct
127 Correct 24 ms 47436 KB Output is correct
128 Correct 23 ms 47456 KB Output is correct
129 Correct 24 ms 47544 KB Output is correct
130 Correct 25 ms 47552 KB Output is correct
131 Correct 22 ms 47280 KB Output is correct
132 Correct 36 ms 52568 KB Output is correct
133 Correct 35 ms 52356 KB Output is correct
134 Correct 38 ms 55980 KB Output is correct
135 Correct 39 ms 57736 KB Output is correct
136 Correct 39 ms 58056 KB Output is correct
137 Correct 33 ms 52552 KB Output is correct
138 Correct 34 ms 52208 KB Output is correct
139 Correct 38 ms 61048 KB Output is correct
140 Correct 32 ms 51832 KB Output is correct
141 Correct 35 ms 52308 KB Output is correct
142 Correct 36 ms 52688 KB Output is correct
143 Correct 35 ms 52300 KB Output is correct
144 Correct 35 ms 54080 KB Output is correct
145 Correct 33 ms 52308 KB Output is correct
146 Correct 41 ms 58232 KB Output is correct
147 Correct 36 ms 53788 KB Output is correct
148 Correct 35 ms 51852 KB Output is correct
149 Correct 37 ms 59208 KB Output is correct
150 Correct 38 ms 60612 KB Output is correct
151 Correct 37 ms 57744 KB Output is correct
152 Correct 313 ms 161316 KB Output is correct
153 Correct 326 ms 164944 KB Output is correct
154 Correct 371 ms 159604 KB Output is correct
155 Correct 352 ms 222600 KB Output is correct
156 Correct 303 ms 182828 KB Output is correct
157 Correct 283 ms 143636 KB Output is correct
158 Correct 328 ms 186476 KB Output is correct
159 Correct 411 ms 324904 KB Output is correct
160 Correct 402 ms 302276 KB Output is correct
161 Correct 292 ms 145120 KB Output is correct
162 Correct 277 ms 152112 KB Output is correct