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Submission #874039

# Submission time Handle Problem Language Result Execution time Memory
874039 2023-11-16T08:13:07 Z vjudge1 Lamps (JOI19_lamps) C++17
6 / 100
 356 ms 89704 KB 
#include <bits/stdc++.h>
#define file_io freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define fast_io ios::sync_with_stdio(false);cin.tie(0);
#define what(x) cerr << #x << " is " << x << '\n';
#define kill(x) {cout << x << '\n'; return 0;}
#define all(x) (x).begin(), (x).end()
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define ll long long
#define F first
#define S second
const ll inf = 1e18, mod = 1e9 + 7, delta = 1e9 + 9, SQ = 450, P = 6065621; //998244353

using namespace std;

const ll N = 5e5 + 10, LG = 20;
ll n, dis[N], ps0[N][20], ps1[N][20], psr[N][20];
queue<ll> q;
bool mark[N];

int main() {
  fast_io;
  string x, y;
  cin >> n >> x >> y;
  ll a = 0, b = 0;
  for (int i = n - 1, j = 0; i >= 0; i--, j++)
    a += (x[i] == '1') * (1 << j); 
  for (int i = n - 1, j = 0; i >= 0; i--, j++)
    b += (y[i] == '1') * (1 << j);
  q.push(a);
  dis[a] = 0;
  mark[a] = true;
  if (a == b) kill(0);
  for (int mask = 0; mask < (1 << n); mask++) {
    for (int i = n - 1; i >= 0; i--) {
      ps0[mask][i] = ps0[mask][i + 1] + (!(mask & (1 << i))) * (1 << i);
      ps1[mask][i] = ps1[mask][i + 1] + (mask & (1 << i));
    }
  }
  while (q.size()) {
    int v = q.front();
    q.pop();
    for (int i = 0; i < n; i++) {
      for (int j = i; j < n; j++) {
        int x = v;
        x -= (ps1[v][i] - ps1[v][j + 1]);
        if (!mark[x]) {
          mark[x] = true;
          q.push(x);
          dis[x] = dis[v] + 1;
          if (x == b) goto Hell;
        }
        x = v;
        x += ps0[v][i] - ps0[v][j + 1];
        if (!mark[x]) {
          mark[x] = true;
          q.push(x);
          dis[x] = dis[v] + 1;
          if (x == b) goto Hell;
        }
        x = v;
        x += ps0[v][i] - ps0[v][j + 1];
        x -= (ps1[v][i] - ps1[v][j + 1]);
        if (!mark[x]) {
          mark[x] = true;
          q.push(x);
          dis[x] = dis[v] + 1;
          if (x == b) goto Hell;
        }
      }
    }
  }
  Hell:;
  cout << dis[b] << '\n';
  return 0; 
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 218 ms 89684 KB Output is correct
9 Correct 210 ms 89628 KB Output is correct
10 Correct 94 ms 48088 KB Output is correct
11 Correct 95 ms 48212 KB Output is correct
12 Correct 41 ms 88912 KB Output is correct
13 Correct 33 ms 48332 KB Output is correct
14 Correct 45 ms 89172 KB Output is correct
15 Correct 37 ms 48216 KB Output is correct
16 Correct 60 ms 89684 KB Output is correct
17 Correct 46 ms 48212 KB Output is correct
18 Correct 49 ms 89208 KB Output is correct
19 Correct 23 ms 47904 KB Output is correct
20 Correct 69 ms 89684 KB Output is correct
21 Correct 22 ms 47700 KB Output is correct
22 Correct 43 ms 88916 KB Output is correct
23 Correct 28 ms 47964 KB Output is correct
24 Correct 42 ms 88780 KB Output is correct
25 Correct 22 ms 47708 KB Output is correct
26 Correct 49 ms 89424 KB Output is correct
27 Correct 26 ms 47952 KB Output is correct
28 Correct 14 ms 25180 KB Output is correct
29 Correct 87 ms 89704 KB Output is correct
30 Correct 46 ms 48208 KB Output is correct
31 Correct 11 ms 25176 KB Output is correct
32 Correct 42 ms 88968 KB Output is correct
33 Correct 40 ms 48256 KB Output is correct
34 Correct 21 ms 25432 KB Output is correct

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 218 ms 89684 KB Output is correct
9 Correct 210 ms 89628 KB Output is correct
10 Correct 94 ms 48088 KB Output is correct
11 Correct 95 ms 48212 KB Output is correct
12 Correct 41 ms 88912 KB Output is correct
13 Correct 33 ms 48332 KB Output is correct
14 Correct 45 ms 89172 KB Output is correct
15 Correct 37 ms 48216 KB Output is correct
16 Correct 60 ms 89684 KB Output is correct
17 Correct 46 ms 48212 KB Output is correct
18 Correct 49 ms 89208 KB Output is correct
19 Correct 23 ms 47904 KB Output is correct
20 Correct 69 ms 89684 KB Output is correct
21 Correct 22 ms 47700 KB Output is correct
22 Correct 43 ms 88916 KB Output is correct
23 Correct 28 ms 47964 KB Output is correct
24 Correct 42 ms 88780 KB Output is correct
25 Correct 22 ms 47708 KB Output is correct
26 Correct 49 ms 89424 KB Output is correct
27 Correct 26 ms 47952 KB Output is correct
28 Correct 14 ms 25180 KB Output is correct
29 Correct 87 ms 89704 KB Output is correct
30 Correct 46 ms 48208 KB Output is correct
31 Correct 11 ms 25176 KB Output is correct
32 Correct 42 ms 88968 KB Output is correct
33 Correct 40 ms 48256 KB Output is correct
34 Correct 21 ms 25432 KB Output is correct
35 Runtime error 356 ms 54572 KB Execution killed with signal 11
36 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 8 ms 6572 KB Output is correct
8 Runtime error 35 ms 52164 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 218 ms 89684 KB Output is correct
9 Correct 210 ms 89628 KB Output is correct
10 Correct 94 ms 48088 KB Output is correct
11 Correct 95 ms 48212 KB Output is correct
12 Correct 41 ms 88912 KB Output is correct
13 Correct 33 ms 48332 KB Output is correct
14 Correct 45 ms 89172 KB Output is correct
15 Correct 37 ms 48216 KB Output is correct
16 Correct 60 ms 89684 KB Output is correct
17 Correct 46 ms 48212 KB Output is correct
18 Correct 49 ms 89208 KB Output is correct
19 Correct 23 ms 47904 KB Output is correct
20 Correct 69 ms 89684 KB Output is correct
21 Correct 22 ms 47700 KB Output is correct
22 Correct 43 ms 88916 KB Output is correct
23 Correct 28 ms 47964 KB Output is correct
24 Correct 42 ms 88780 KB Output is correct
25 Correct 22 ms 47708 KB Output is correct
26 Correct 49 ms 89424 KB Output is correct
27 Correct 26 ms 47952 KB Output is correct
28 Correct 14 ms 25180 KB Output is correct
29 Correct 87 ms 89704 KB Output is correct
30 Correct 46 ms 48208 KB Output is correct
31 Correct 11 ms 25176 KB Output is correct
32 Correct 42 ms 88968 KB Output is correct
33 Correct 40 ms 48256 KB Output is correct
34 Correct 21 ms 25432 KB Output is correct
35 Runtime error 356 ms 54572 KB Execution killed with signal 11
36 Halted 0 ms 0 KB -