oj.uz

Submission #209424

# Submission time Handle Problem Language Result Execution time Memory
209424 2020-03-14T07:33:02 Z model_code Solar Storm (NOI20_solarstorm) C++17
100 / 100
 527 ms 148288 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1e6 + 5;
#define ll long long

ll A[N], prefix[N];
int V[N];
int nxt[N], before[N], parent[N];
vector<int> adj[N];

int n, s, ans_start;
ll ans = 0;

vector<int> LOL;

void dfs(int u) {
  LOL.push_back(u);
  if(u != n) {
    int l = before[u];
    int r = nxt[LOL[max(0, (int)LOL.size() - s)]] - 1;
    ll candidate = prefix[r] - (l == -1 ? 0 : prefix[l]);
    //cout<<"DBG --> "<<u<<" : "<<l<<" "<<r<<" : "<<candidate<<endl;
    if(candidate > ans) {
      ans = candidate;
      ans_start = u;
    }
  }
  for(auto v : adj[u]) {
    dfs(v);
  }
  LOL.pop_back();
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int diff;
  ll k;
  cin>>n>>s>>k;
  A[0] = 0;
  for(int i = 1; i < n; i++) {
    cin>>diff;
    A[i] = A[i - 1] + diff;
  }
  for(int i = 0; i < n; i++) {
    cin>>V[i];
    prefix[i] = (i == 0 ? 0 : prefix[i - 1]) + V[i];
  }
  prefix[n] = prefix[n - 1];
  A[n] = A[n - 1] + 2*k;
  int current_ptr = 0;
  nxt[n] = n;
  for(int i = 0; i < n; i++) {
    for(int j = current_ptr; j <= n; j++) {
      if(A[j] - A[i] > k) {
        current_ptr = j;
        nxt[i] = j;
        break;
      }
    }
  }
  current_ptr = n;
  for(int i = n; i >= 0; i--) {
    for(int j = current_ptr; j >= -1; j--) {
      if(j == -1 or A[i] - A[j] > k) {
        current_ptr = j;
        before[i] = j;
        break;
      }
    }
  }
//  for(int i = 0; i < n; i++) cout<<i<<" Before: "<<before[i]<<", Next: "<<nxt[i]<<endl;
  for(int i = 0; i < n; i++) {
    int jump_to = nxt[i];
    if(jump_to != n) {
      jump_to = nxt[jump_to] - 1;
    }
    //cout<<i<<" --> "<<jump_to<<endl;
    adj[jump_to].push_back(i);
    parent[i] = jump_to;
  }
  dfs(n);
  vector<int> Q;
  for(int i = 0; i < s; i++) {
    Q.push_back(ans_start);
    ans_start = parent[ans_start];
    if(ans_start == n)  break;
  }
  cout<<Q.size()<<endl;
  for(auto v : Q) cout<<v + 1<<" ";
  cout<<endl;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23800 KB Output is correct
2 Correct 24 ms 24952 KB Output is correct
3 Correct 25 ms 25080 KB Output is correct
4 Correct 21 ms 24440 KB Output is correct
5 Correct 22 ms 23800 KB Output is correct
6 Correct 21 ms 24184 KB Output is correct
7 Correct 25 ms 24216 KB Output is correct
8 Correct 22 ms 24312 KB Output is correct
9 Correct 22 ms 24184 KB Output is correct
10 Correct 30 ms 24356 KB Output is correct
11 Correct 29 ms 24440 KB Output is correct
12 Correct 21 ms 24312 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 253 ms 54240 KB Output is correct
2 Correct 157 ms 45912 KB Output is correct
3 Correct 167 ms 56436 KB Output is correct
4 Correct 232 ms 63712 KB Output is correct
5 Correct 292 ms 70648 KB Output is correct
6 Correct 336 ms 86536 KB Output is correct
7 Correct 231 ms 76396 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23800 KB Output is correct
2 Correct 24 ms 24952 KB Output is correct
3 Correct 25 ms 25080 KB Output is correct
4 Correct 21 ms 24440 KB Output is correct
5 Correct 22 ms 23800 KB Output is correct
6 Correct 21 ms 24184 KB Output is correct
7 Correct 25 ms 24216 KB Output is correct
8 Correct 22 ms 24312 KB Output is correct
9 Correct 22 ms 24184 KB Output is correct
10 Correct 30 ms 24356 KB Output is correct
11 Correct 29 ms 24440 KB Output is correct
12 Correct 21 ms 24312 KB Output is correct
13 Correct 253 ms 54240 KB Output is correct
14 Correct 157 ms 45912 KB Output is correct
15 Correct 167 ms 56436 KB Output is correct
16 Correct 232 ms 63712 KB Output is correct
17 Correct 292 ms 70648 KB Output is correct
18 Correct 336 ms 86536 KB Output is correct
19 Correct 231 ms 76396 KB Output is correct
20 Correct 176 ms 43252 KB Output is correct
21 Correct 279 ms 99656 KB Output is correct
22 Correct 327 ms 113912 KB Output is correct
23 Correct 224 ms 52812 KB Output is correct
24 Correct 251 ms 50312 KB Output is correct
25 Correct 282 ms 58584 KB Output is correct
26 Correct 215 ms 47676 KB Output is correct
27 Correct 280 ms 57564 KB Output is correct
28 Correct 315 ms 58232 KB Output is correct
29 Correct 373 ms 68704 KB Output is correct
30 Correct 293 ms 70768 KB Output is correct
31 Correct 264 ms 80360 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 321 ms 121148 KB Output is correct
2 Correct 176 ms 81508 KB Output is correct
3 Correct 190 ms 86820 KB Output is correct
4 Correct 252 ms 113372 KB Output is correct
5 Correct 250 ms 110680 KB Output is correct
6 Correct 267 ms 115812 KB Output is correct
7 Correct 381 ms 145116 KB Output is correct

Subtask #5
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23800 KB Output is correct
2 Correct 24 ms 24952 KB Output is correct
3 Correct 25 ms 25080 KB Output is correct
4 Correct 21 ms 24440 KB Output is correct
5 Correct 22 ms 23800 KB Output is correct
6 Correct 21 ms 24184 KB Output is correct
7 Correct 25 ms 24216 KB Output is correct
8 Correct 22 ms 24312 KB Output is correct
9 Correct 22 ms 24184 KB Output is correct
10 Correct 30 ms 24356 KB Output is correct
11 Correct 29 ms 24440 KB Output is correct
12 Correct 21 ms 24312 KB Output is correct
13 Correct 22 ms 24312 KB Output is correct
14 Correct 23 ms 24312 KB Output is correct
15 Correct 23 ms 24312 KB Output is correct
16 Correct 21 ms 24184 KB Output is correct
17 Correct 21 ms 24696 KB Output is correct
18 Correct 23 ms 24952 KB Output is correct
19 Correct 22 ms 24824 KB Output is correct
20 Correct 22 ms 24696 KB Output is correct
21 Correct 24 ms 25208 KB Output is correct
22 Correct 23 ms 25080 KB Output is correct
23 Correct 23 ms 24312 KB Output is correct
24 Correct 22 ms 24312 KB Output is correct
25 Correct 26 ms 24568 KB Output is correct
26 Correct 22 ms 24824 KB Output is correct
27 Correct 22 ms 24696 KB Output is correct
28 Correct 23 ms 24696 KB Output is correct
29 Correct 24 ms 24700 KB Output is correct
30 Correct 20 ms 24184 KB Output is correct

Subtask #6
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23800 KB Output is correct
2 Correct 24 ms 24952 KB Output is correct
3 Correct 25 ms 25080 KB Output is correct
4 Correct 21 ms 24440 KB Output is correct
5 Correct 22 ms 23800 KB Output is correct
6 Correct 21 ms 24184 KB Output is correct
7 Correct 25 ms 24216 KB Output is correct
8 Correct 22 ms 24312 KB Output is correct
9 Correct 22 ms 24184 KB Output is correct
10 Correct 30 ms 24356 KB Output is correct
11 Correct 29 ms 24440 KB Output is correct
12 Correct 21 ms 24312 KB Output is correct
13 Correct 253 ms 54240 KB Output is correct
14 Correct 157 ms 45912 KB Output is correct
15 Correct 167 ms 56436 KB Output is correct
16 Correct 232 ms 63712 KB Output is correct
17 Correct 292 ms 70648 KB Output is correct
18 Correct 336 ms 86536 KB Output is correct
19 Correct 231 ms 76396 KB Output is correct
20 Correct 176 ms 43252 KB Output is correct
21 Correct 279 ms 99656 KB Output is correct
22 Correct 327 ms 113912 KB Output is correct
23 Correct 224 ms 52812 KB Output is correct
24 Correct 251 ms 50312 KB Output is correct
25 Correct 282 ms 58584 KB Output is correct
26 Correct 215 ms 47676 KB Output is correct
27 Correct 280 ms 57564 KB Output is correct
28 Correct 315 ms 58232 KB Output is correct
29 Correct 373 ms 68704 KB Output is correct
30 Correct 293 ms 70768 KB Output is correct
31 Correct 264 ms 80360 KB Output is correct
32 Correct 386 ms 54624 KB Output is correct
33 Correct 235 ms 53648 KB Output is correct
34 Correct 353 ms 68996 KB Output is correct
35 Correct 229 ms 51064 KB Output is correct
36 Correct 249 ms 53212 KB Output is correct
37 Correct 283 ms 57568 KB Output is correct
38 Correct 402 ms 94540 KB Output is correct
39 Correct 298 ms 107296 KB Output is correct
40 Correct 393 ms 137388 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 23800 KB Output is correct
2 Correct 24 ms 24952 KB Output is correct
3 Correct 25 ms 25080 KB Output is correct
4 Correct 21 ms 24440 KB Output is correct
5 Correct 22 ms 23800 KB Output is correct
6 Correct 21 ms 24184 KB Output is correct
7 Correct 25 ms 24216 KB Output is correct
8 Correct 22 ms 24312 KB Output is correct
9 Correct 22 ms 24184 KB Output is correct
10 Correct 30 ms 24356 KB Output is correct
11 Correct 29 ms 24440 KB Output is correct
12 Correct 21 ms 24312 KB Output is correct
13 Correct 253 ms 54240 KB Output is correct
14 Correct 157 ms 45912 KB Output is correct
15 Correct 167 ms 56436 KB Output is correct
16 Correct 232 ms 63712 KB Output is correct
17 Correct 292 ms 70648 KB Output is correct
18 Correct 336 ms 86536 KB Output is correct
19 Correct 231 ms 76396 KB Output is correct
20 Correct 176 ms 43252 KB Output is correct
21 Correct 279 ms 99656 KB Output is correct
22 Correct 327 ms 113912 KB Output is correct
23 Correct 224 ms 52812 KB Output is correct
24 Correct 251 ms 50312 KB Output is correct
25 Correct 282 ms 58584 KB Output is correct
26 Correct 215 ms 47676 KB Output is correct
27 Correct 280 ms 57564 KB Output is correct
28 Correct 315 ms 58232 KB Output is correct
29 Correct 373 ms 68704 KB Output is correct
30 Correct 293 ms 70768 KB Output is correct
31 Correct 264 ms 80360 KB Output is correct
32 Correct 321 ms 121148 KB Output is correct
33 Correct 176 ms 81508 KB Output is correct
34 Correct 190 ms 86820 KB Output is correct
35 Correct 252 ms 113372 KB Output is correct
36 Correct 250 ms 110680 KB Output is correct
37 Correct 267 ms 115812 KB Output is correct
38 Correct 381 ms 145116 KB Output is correct
39 Correct 22 ms 24312 KB Output is correct
40 Correct 23 ms 24312 KB Output is correct
41 Correct 23 ms 24312 KB Output is correct
42 Correct 21 ms 24184 KB Output is correct
43 Correct 21 ms 24696 KB Output is correct
44 Correct 23 ms 24952 KB Output is correct
45 Correct 22 ms 24824 KB Output is correct
46 Correct 22 ms 24696 KB Output is correct
47 Correct 24 ms 25208 KB Output is correct
48 Correct 23 ms 25080 KB Output is correct
49 Correct 23 ms 24312 KB Output is correct
50 Correct 22 ms 24312 KB Output is correct
51 Correct 26 ms 24568 KB Output is correct
52 Correct 22 ms 24824 KB Output is correct
53 Correct 22 ms 24696 KB Output is correct
54 Correct 23 ms 24696 KB Output is correct
55 Correct 24 ms 24700 KB Output is correct
56 Correct 20 ms 24184 KB Output is correct
57 Correct 386 ms 54624 KB Output is correct
58 Correct 235 ms 53648 KB Output is correct
59 Correct 353 ms 68996 KB Output is correct
60 Correct 229 ms 51064 KB Output is correct
61 Correct 249 ms 53212 KB Output is correct
62 Correct 283 ms 57568 KB Output is correct
63 Correct 402 ms 94540 KB Output is correct
64 Correct 298 ms 107296 KB Output is correct
65 Correct 393 ms 137388 KB Output is correct
66 Correct 180 ms 46568 KB Output is correct
67 Correct 354 ms 123332 KB Output is correct
68 Correct 270 ms 91996 KB Output is correct
69 Correct 329 ms 114120 KB Output is correct
70 Correct 203 ms 47208 KB Output is correct
71 Correct 392 ms 72752 KB Output is correct
72 Correct 258 ms 54904 KB Output is correct
73 Correct 349 ms 65836 KB Output is correct
74 Correct 214 ms 66532 KB Output is correct
75 Correct 317 ms 116704 KB Output is correct
76 Correct 242 ms 90332 KB Output is correct
77 Correct 313 ms 61688 KB Output is correct
78 Correct 220 ms 87656 KB Output is correct
79 Correct 296 ms 106184 KB Output is correct
80 Correct 363 ms 126936 KB Output is correct
81 Correct 190 ms 46568 KB Output is correct
82 Correct 275 ms 57868 KB Output is correct
83 Correct 208 ms 48504 KB Output is correct
84 Correct 228 ms 50808 KB Output is correct
85 Correct 211 ms 49144 KB Output is correct
86 Correct 379 ms 70520 KB Output is correct
87 Correct 214 ms 62824 KB Output is correct
88 Correct 353 ms 68344 KB Output is correct
89 Correct 278 ms 106336 KB Output is correct
90 Correct 266 ms 98632 KB Output is correct
91 Correct 527 ms 148288 KB Output is correct
92 Correct 384 ms 138588 KB Output is correct
93 Correct 447 ms 145116 KB Output is correct
94 Correct 433 ms 145100 KB Output is correct
95 Correct 360 ms 67772 KB Output is correct
96 Correct 291 ms 58520 KB Output is correct
97 Correct 388 ms 76384 KB Output is correct
98 Correct 268 ms 67048 KB Output is correct
99 Correct 331 ms 105404 KB Output is correct
100 Correct 316 ms 104284 KB Output is correct