답안 #949880

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
949880	2024-03-19T19:38:13 Z	fuad27	Alternating Current (BOI18_alternating)	C++17	33 / 100	1968 ms	2392 KB

alternating

#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("O3")
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;
  auto start=clock();
  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--;
  }
  while((long double)(clock()-start)/CLOCKS_PER_SEC < 1.5) {
    long double temp = 100;
    for(int i = 0;i<m;i++)mask[i]=rng()%2;
    int old = eval();
    for(int i = 0;i<5000;i++) {
      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

#	결과	실행 시간	메모리	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	1 ms	348 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1501 ms	436 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	1501 ms	428 KB	Output is correct
11	Correct	1501 ms	432 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1501 ms	432 KB	Output is correct
14	Correct	1 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	1 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	0 ms	600 KB	Output is correct
27	Correct	1501 ms	432 KB	Output is correct
28	Correct	0 ms	344 KB	Output is correct
29	Correct	1501 ms	432 KB	Output is correct
30	Correct	1501 ms	436 KB	Output is correct
31	Correct	0 ms	344 KB	Output is correct
32	Correct	1501 ms	436 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	1501 ms	432 KB	Output is correct
35	Correct	1501 ms	428 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1501 ms	344 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

#	결과	실행 시간	메모리	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	1 ms	348 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1501 ms	436 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	1501 ms	428 KB	Output is correct
11	Correct	1501 ms	432 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1501 ms	432 KB	Output is correct
14	Correct	1 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	1 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	0 ms	600 KB	Output is correct
27	Correct	1501 ms	432 KB	Output is correct
28	Correct	0 ms	344 KB	Output is correct
29	Correct	1501 ms	432 KB	Output is correct
30	Correct	1501 ms	436 KB	Output is correct
31	Correct	0 ms	344 KB	Output is correct
32	Correct	1501 ms	436 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	1501 ms	432 KB	Output is correct
35	Correct	1501 ms	428 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1501 ms	344 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct
41	Correct	1 ms	348 KB	Output is correct
42	Correct	1 ms	348 KB	Output is correct
43	Correct	71 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	5 ms	600 KB	Output is correct
46	Correct	6 ms	344 KB	Output is correct
47	Correct	1 ms	348 KB	Output is correct
48	Correct	1502 ms	436 KB	Output is correct
49	Correct	0 ms	348 KB	Output is correct
50	Correct	1501 ms	432 KB	Output is correct
51	Correct	1501 ms	592 KB	Output is correct
52	Correct	1501 ms	436 KB	Output is correct
53	Correct	1501 ms	432 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	2 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	344 KB	Output is correct
58	Correct	286 ms	348 KB	Output is correct
59	Correct	0 ms	344 KB	Output is correct
60	Correct	5 ms	456 KB	Output is correct
61	Correct	1 ms	348 KB	Output is correct
62	Correct	1501 ms	436 KB	Output is correct
63	Correct	1501 ms	596 KB	Output is correct
64	Correct	0 ms	348 KB	Output is correct
65	Correct	1500 ms	432 KB	Output is correct
66	Correct	1 ms	348 KB	Output is correct
67	Correct	0 ms	348 KB	Output is correct
68	Correct	0 ms	600 KB	Output is correct
69	Correct	1 ms	348 KB	Output is correct

Subtask #3
0 / 22.0

#	결과	실행 시간	메모리	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	1 ms	348 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1501 ms	436 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	1501 ms	428 KB	Output is correct
11	Correct	1501 ms	432 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1501 ms	432 KB	Output is correct
14	Correct	1 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	1 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	0 ms	600 KB	Output is correct
27	Correct	1501 ms	432 KB	Output is correct
28	Correct	0 ms	344 KB	Output is correct
29	Correct	1501 ms	432 KB	Output is correct
30	Correct	1501 ms	436 KB	Output is correct
31	Correct	0 ms	344 KB	Output is correct
32	Correct	1501 ms	436 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	1501 ms	432 KB	Output is correct
35	Correct	1501 ms	428 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1501 ms	344 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct
41	Correct	1 ms	348 KB	Output is correct
42	Correct	1 ms	348 KB	Output is correct
43	Correct	71 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	5 ms	600 KB	Output is correct
46	Correct	6 ms	344 KB	Output is correct
47	Correct	1 ms	348 KB	Output is correct
48	Correct	1502 ms	436 KB	Output is correct
49	Correct	0 ms	348 KB	Output is correct
50	Correct	1501 ms	432 KB	Output is correct
51	Correct	1501 ms	592 KB	Output is correct
52	Correct	1501 ms	436 KB	Output is correct
53	Correct	1501 ms	432 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	2 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	344 KB	Output is correct
58	Correct	286 ms	348 KB	Output is correct
59	Correct	0 ms	344 KB	Output is correct
60	Correct	5 ms	456 KB	Output is correct
61	Correct	1 ms	348 KB	Output is correct
62	Correct	1501 ms	436 KB	Output is correct
63	Correct	1501 ms	596 KB	Output is correct
64	Correct	0 ms	348 KB	Output is correct
65	Correct	1500 ms	432 KB	Output is correct
66	Correct	1 ms	348 KB	Output is correct
67	Correct	0 ms	348 KB	Output is correct
68	Correct	0 ms	600 KB	Output is correct
69	Correct	1 ms	348 KB	Output is correct
70	Correct	1 ms	352 KB	Output is correct
71	Incorrect	1504 ms	456 KB	'impossible' claimed, but there is a solution
72	Halted	0 ms	0 KB	-

Subtask #4
0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	17 ms	2392 KB	Output is correct
2	Correct	1 ms	1116 KB	Output is correct
3	Correct	1936 ms	1876 KB	Output is correct
4	Incorrect	1968 ms	1808 KB	'impossible' claimed, but there is a solution
5	Halted	0 ms	0 KB	-

Subtask #5
0 / 26.0

#	결과	실행 시간	메모리	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	1 ms	348 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1501 ms	436 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	1501 ms	428 KB	Output is correct
11	Correct	1501 ms	432 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1501 ms	432 KB	Output is correct
14	Correct	1 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	1 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	0 ms	600 KB	Output is correct
27	Correct	1501 ms	432 KB	Output is correct
28	Correct	0 ms	344 KB	Output is correct
29	Correct	1501 ms	432 KB	Output is correct
30	Correct	1501 ms	436 KB	Output is correct
31	Correct	0 ms	344 KB	Output is correct
32	Correct	1501 ms	436 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	1501 ms	432 KB	Output is correct
35	Correct	1501 ms	428 KB	Output is correct
36	Correct	1 ms	348 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1501 ms	344 KB	Output is correct
39	Correct	1 ms	348 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct
41	Correct	1 ms	348 KB	Output is correct
42	Correct	1 ms	348 KB	Output is correct
43	Correct	71 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	5 ms	600 KB	Output is correct
46	Correct	6 ms	344 KB	Output is correct
47	Correct	1 ms	348 KB	Output is correct
48	Correct	1502 ms	436 KB	Output is correct
49	Correct	0 ms	348 KB	Output is correct
50	Correct	1501 ms	432 KB	Output is correct
51	Correct	1501 ms	592 KB	Output is correct
52	Correct	1501 ms	436 KB	Output is correct
53	Correct	1501 ms	432 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	2 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	344 KB	Output is correct
58	Correct	286 ms	348 KB	Output is correct
59	Correct	0 ms	344 KB	Output is correct
60	Correct	5 ms	456 KB	Output is correct
61	Correct	1 ms	348 KB	Output is correct
62	Correct	1501 ms	436 KB	Output is correct
63	Correct	1501 ms	596 KB	Output is correct
64	Correct	0 ms	348 KB	Output is correct
65	Correct	1500 ms	432 KB	Output is correct
66	Correct	1 ms	348 KB	Output is correct
67	Correct	0 ms	348 KB	Output is correct
68	Correct	0 ms	600 KB	Output is correct
69	Correct	1 ms	348 KB	Output is correct
70	Correct	1 ms	352 KB	Output is correct
71	Incorrect	1504 ms	456 KB	'impossible' claimed, but there is a solution
72	Halted	0 ms	0 KB	-

답안 #949880

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 20.0 / 20.0

Subtask #3 0 / 22.0

Subtask #4 0 / 19.0

Subtask #5 0 / 26.0

Subtask #1
13.0 / 13.0

Subtask #2
20.0 / 20.0

Subtask #3
0 / 22.0

Subtask #4
0 / 19.0

Subtask #5
0 / 26.0