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Submission #1003539

# Submission time Handle Problem Language Result Execution time Memory
1003539 2024-06-20T12:35:46 Z vjudge1 Flooding Wall (BOI24_wall) C++17
70 / 100
 5000 ms 68788 KB 
#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math,inline")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,lzcnt,mmx,abm,avx,avx2,fma")
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define all(x) x.begin(), x.end()

const int N = 5e5, mod = 1e9+7;

int n, a[N], b[N], pre[N], suf[N], pw[N];
vector<pair<int, int>> cp;

signed main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);

  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  for (int i = 0; i < n; i++) {
    cin >> b[i];
    if (a[i] > b[i]) swap(a[i], b[i]);
  }

  pw[0] = 1;
  for (int i = 1; i < n; i++) {
    pw[i] = (pw[i-1] << 1) % mod;
  }

    vector<int> u(n*2);
    u.push_back(0);
    for (int i = 0; i < n; i++) {
      u[i*2] = a[i];
      u[i*2 + 1] = b[i];
    }
    sort(all(u));
    u.erase(unique(all(u)), u.end());

    int sz = u.size();
    cp.reserve(sz);
    for (int i = 0; i < sz; i++) {
      cp.push_back(make_pair(u[i], u[i]));

      if (i+1 < sz && u[i]+1 <= u[i+1]-1) cp.push_back(make_pair(u[i]+1, u[i+1]-1));
    }
    sz = cp.size();

    int ans = 0;
    for (int j = sz-2; j >= 0; j--) {
      for (int i = 0; i < n; i++) {
        pre[i] = (i ? pre[i-1] : 1);
        
        if (b[i] <= cp[j].second) {
          pre[i] *= 2;
          pre[i] %= mod;
        }
        else if (a[i] > cp[j].second) pre[i] = 0;
      }
    
      for (int i = n-1; i >= 0; i--) {
        suf[i] = (i+1 < n ? suf[i+1] : 1);
        
        if (b[i] <= cp[j].second) {
          suf[i] *= 2;
          suf[i] %= mod;
        }
        else if (a[i] > cp[j].second) suf[i] = 0;
      }
    
      bool ok = 0;
      for (int i = 1; i < n-1; i++) {
        int x = 0;
        
        x += pw[n-1-i] * pre[i-1];
        x %= mod;

        x += pw[i] * suf[i+1];
        x %= mod;

        x = (x - pre[i-1] * suf[i+1] + mod) % mod;

        if (x) ok = 1;

        if (a[i] < cp[j+1].first) {
          ans += (pw[n-1] - x + mod) % mod * (cp[j+1].second-cp[j+1].first+1);
          ans %= mod;
        }

        if (b[i] < cp[j+1].first) {
          ans += (pw[n-1] - x + mod) % mod * (cp[j+1].second-cp[j+1].first+1);
          ans %= mod;
        }
      }

      if (!ok) {
        for (int k = j-1; k >= 0; k--) {
          for (int i = 1; i < n-1; i++) {
            if (a[i] < cp[k+1].first) {
              ans += pw[n-1] * (cp[k+1].second-cp[k+1].first+1);
              ans %= mod;
            }

            if (b[i] < cp[k+1].first) {
              ans += pw[n-1] * (cp[k+1].second-cp[k+1].first+1);
              ans %= mod;
            }
          }
        }

        break;
      }
    }

    cout << ans << "\n";
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 129 ms 1116 KB Output is correct
28 Correct 146 ms 1116 KB Output is correct
29 Correct 2 ms 952 KB Output is correct
30 Correct 2 ms 956 KB Output is correct
31 Correct 4 ms 956 KB Output is correct
32 Correct 4 ms 1116 KB Output is correct
33 Correct 4 ms 956 KB Output is correct
34 Correct 4 ms 1012 KB Output is correct
35 Correct 4 ms 1116 KB Output is correct
36 Correct 4 ms 928 KB Output is correct
37 Correct 2 ms 956 KB Output is correct
38 Correct 2 ms 928 KB Output is correct
39 Correct 4 ms 956 KB Output is correct
40 Correct 4 ms 956 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 344 KB Output is correct
45 Correct 0 ms 344 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 129 ms 1116 KB Output is correct
50 Correct 146 ms 1116 KB Output is correct
51 Correct 2 ms 952 KB Output is correct
52 Correct 2 ms 956 KB Output is correct
53 Correct 4 ms 956 KB Output is correct
54 Correct 4 ms 1116 KB Output is correct
55 Correct 4 ms 956 KB Output is correct
56 Correct 4 ms 1012 KB Output is correct
57 Correct 4 ms 1116 KB Output is correct
58 Correct 4 ms 928 KB Output is correct
59 Correct 2 ms 956 KB Output is correct
60 Correct 2 ms 928 KB Output is correct
61 Correct 4 ms 956 KB Output is correct
62 Correct 4 ms 956 KB Output is correct
63 Correct 4570 ms 1660 KB Output is correct
64 Correct 4509 ms 1660 KB Output is correct
65 Correct 8 ms 1208 KB Output is correct
66 Correct 4 ms 952 KB Output is correct
67 Correct 5 ms 1212 KB Output is correct
68 Correct 4 ms 956 KB Output is correct
69 Correct 1445 ms 1256 KB Output is correct
70 Correct 1396 ms 1236 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 2 ms 952 KB Output is correct
11 Correct 2 ms 956 KB Output is correct
12 Correct 2 ms 956 KB Output is correct
13 Correct 2 ms 956 KB Output is correct
14 Correct 111 ms 29912 KB Output is correct
15 Correct 103 ms 29776 KB Output is correct
16 Correct 99 ms 29776 KB Output is correct
17 Correct 104 ms 29784 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 344 KB Output is correct
45 Correct 0 ms 344 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 129 ms 1116 KB Output is correct
50 Correct 146 ms 1116 KB Output is correct
51 Correct 2 ms 952 KB Output is correct
52 Correct 2 ms 956 KB Output is correct
53 Correct 4 ms 956 KB Output is correct
54 Correct 4 ms 1116 KB Output is correct
55 Correct 4 ms 956 KB Output is correct
56 Correct 4 ms 1012 KB Output is correct
57 Correct 4 ms 1116 KB Output is correct
58 Correct 4 ms 928 KB Output is correct
59 Correct 2 ms 956 KB Output is correct
60 Correct 2 ms 928 KB Output is correct
61 Correct 4 ms 956 KB Output is correct
62 Correct 4 ms 956 KB Output is correct
63 Correct 4570 ms 1660 KB Output is correct
64 Correct 4509 ms 1660 KB Output is correct
65 Correct 8 ms 1208 KB Output is correct
66 Correct 4 ms 952 KB Output is correct
67 Correct 5 ms 1212 KB Output is correct
68 Correct 4 ms 956 KB Output is correct
69 Correct 1445 ms 1256 KB Output is correct
70 Correct 1396 ms 1236 KB Output is correct
71 Correct 1 ms 344 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 0 ms 348 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 0 ms 348 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 0 ms 348 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 2 ms 952 KB Output is correct
81 Correct 2 ms 956 KB Output is correct
82 Correct 2 ms 956 KB Output is correct
83 Correct 2 ms 956 KB Output is correct
84 Correct 111 ms 29912 KB Output is correct
85 Correct 103 ms 29776 KB Output is correct
86 Correct 99 ms 29776 KB Output is correct
87 Correct 104 ms 29784 KB Output is correct
88 Execution timed out 5024 ms 68788 KB Time limit exceeded
89 Halted 0 ms 0 KB -