oj.uz

Submission #949874

# Submission time Handle Problem Language Result Execution time Memory
949874 2024-03-19T19:31:01 Z fuad27 Alternating Current (BOI18_alternating) C++17
33 / 100
 3000 ms 2392 KB 
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock().now().time_since_epoch().count());
long double P(int old, int nw, long double temp) {
  if(nw < old)return 1.0;
  return exp((old-nw)/temp);

}
vector<int> mask;
vector<pair<int,int>> a;
int n, m;
int eval() {
  int cnt1[n+1], cnt2[n+1];
  memset(cnt1, 0, sizeof cnt1);
  memset(cnt2, 0, sizeof cnt2);
  for(int i = 0;i<m;i++) {
    if(mask[i]) {
      if(a[i].second>=a[i].first) {
        cnt1[a[i].first]++;
        cnt1[a[i].second+1]--;
      }
      else {
        cnt1[a[i].first]++;
        cnt1[0]++;
        cnt1[a[i].second+1]--;
      }
    }
    else {
      if(a[i].second>=a[i].first) {
        cnt2[a[i].first]++;
        cnt2[a[i].second+1]--;
      }
      else {
        cnt2[a[i].first]++;
        cnt2[0]++;
        cnt2[a[i].second+1]--;
      }
    }
  }
  for(int i = 1;i<=n;i++) {
    cnt1[i]+=cnt1[i-1];
    cnt2[i]+=cnt2[i-1];
  }
  int cc=0;
  for(int i = 0;i<n;i++) {
    if(cnt1[i]<=0 or cnt2[i]<=0)cc++;
  }
  return cc;
}
int main () {
  cin.tie(0)->sync_with_stdio(0);
  cin >> n >> m;
  mask.resize(m);
  a.resize(m);
  for(int i = 0;i<m;i++){
    cin >> a[i].first >> a[i].second;
    a[i].first--;
    a[i].second--;
  }
  for(int _ = 0;_<100;_++) {
    long double temp = 100;
    for(int i = 0;i<m;i++)mask[i]=rng()%2;
    int old = eval();
    for(int __ = 0;__<10000;__++) {
      int c = rng()%m;
      mask[c]^=1;
      int nw = eval();
      if(nw==0) {
        for(int i:mask)cout << i;
        cout << "\n";
        return 0;
      }
      long double rn = (long double)(rng()%1000)/1000;
      if(P(old, nw, temp)>rn) {
        old=nw;
      }
      else {
        mask[c]^=1;
      }
      temp*=0.95;
    }
//    cerr << fixed << setprecision(5) << (long double)temp << endl;
  }
  cout << "impossible\n";
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 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 105 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 125 ms 432 KB Output is correct
11 Correct 117 ms 436 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 129 ms 428 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 600 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 131 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 108 ms 348 KB Output is correct
30 Correct 123 ms 432 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 103 ms 428 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 120 ms 432 KB Output is correct
35 Correct 160 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 148 ms 428 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 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 105 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 125 ms 432 KB Output is correct
11 Correct 117 ms 436 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 129 ms 428 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 600 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 131 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 108 ms 348 KB Output is correct
30 Correct 123 ms 432 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 103 ms 428 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 120 ms 432 KB Output is correct
35 Correct 160 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 148 ms 428 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 17 ms 456 KB Output is correct
43 Correct 2 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 11 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 485 ms 432 KB Output is correct
49 Correct 1 ms 344 KB Output is correct
50 Correct 409 ms 436 KB Output is correct
51 Correct 431 ms 440 KB Output is correct
52 Correct 612 ms 436 KB Output is correct
53 Correct 519 ms 432 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 132 ms 432 KB Output is correct
57 Correct 0 ms 344 KB Output is correct
58 Correct 127 ms 344 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 4 ms 344 KB Output is correct
61 Correct 1 ms 344 KB Output is correct
62 Correct 448 ms 432 KB Output is correct
63 Correct 474 ms 436 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 359 ms 440 KB Output is correct
66 Correct 1 ms 344 KB Output is correct
67 Correct 1 ms 348 KB Output is correct
68 Correct 0 ms 348 KB Output is correct
69 Correct 1 ms 348 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 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 105 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 125 ms 432 KB Output is correct
11 Correct 117 ms 436 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 129 ms 428 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 600 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 131 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 108 ms 348 KB Output is correct
30 Correct 123 ms 432 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 103 ms 428 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 120 ms 432 KB Output is correct
35 Correct 160 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 148 ms 428 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 17 ms 456 KB Output is correct
43 Correct 2 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 11 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 485 ms 432 KB Output is correct
49 Correct 1 ms 344 KB Output is correct
50 Correct 409 ms 436 KB Output is correct
51 Correct 431 ms 440 KB Output is correct
52 Correct 612 ms 436 KB Output is correct
53 Correct 519 ms 432 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 132 ms 432 KB Output is correct
57 Correct 0 ms 344 KB Output is correct
58 Correct 127 ms 344 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 4 ms 344 KB Output is correct
61 Correct 1 ms 344 KB Output is correct
62 Correct 448 ms 432 KB Output is correct
63 Correct 474 ms 436 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 359 ms 440 KB Output is correct
66 Correct 1 ms 344 KB Output is correct
67 Correct 1 ms 348 KB Output is correct
68 Correct 0 ms 348 KB Output is correct
69 Correct 1 ms 348 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Execution timed out 3016 ms 344 KB Time limit exceeded
72 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 2392 KB Output is correct
2 Execution timed out 3064 ms 1208 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 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 105 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 125 ms 432 KB Output is correct
11 Correct 117 ms 436 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 129 ms 428 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 0 ms 600 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 600 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 131 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 108 ms 348 KB Output is correct
30 Correct 123 ms 432 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 103 ms 428 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 120 ms 432 KB Output is correct
35 Correct 160 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 148 ms 428 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 17 ms 456 KB Output is correct
43 Correct 2 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 11 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 485 ms 432 KB Output is correct
49 Correct 1 ms 344 KB Output is correct
50 Correct 409 ms 436 KB Output is correct
51 Correct 431 ms 440 KB Output is correct
52 Correct 612 ms 436 KB Output is correct
53 Correct 519 ms 432 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 132 ms 432 KB Output is correct
57 Correct 0 ms 344 KB Output is correct
58 Correct 127 ms 344 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 4 ms 344 KB Output is correct
61 Correct 1 ms 344 KB Output is correct
62 Correct 448 ms 432 KB Output is correct
63 Correct 474 ms 436 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 359 ms 440 KB Output is correct
66 Correct 1 ms 344 KB Output is correct
67 Correct 1 ms 348 KB Output is correct
68 Correct 0 ms 348 KB Output is correct
69 Correct 1 ms 348 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Execution timed out 3016 ms 344 KB Time limit exceeded
72 Halted 0 ms 0 KB -