답안 #949871

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
949871	2024-03-19T19:28:23 Z	fuad27	Alternating Current (BOI18_alternating)	C++17	13 / 100	3000 ms	3160 KB

alternating

#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;__<100000;__++) {
      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	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1050 ms	440 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1235 ms	436 KB	Output is correct
11	Correct	1174 ms	436 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1262 ms	436 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 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	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	1272 ms	436 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1099 ms	436 KB	Output is correct
30	Correct	1048 ms	452 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1016 ms	436 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	1132 ms	432 KB	Output is correct
35	Correct	1548 ms	436 KB	Output is correct
36	Correct	1 ms	344 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1561 ms	432 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	1 ms	348 KB	Output is correct

Subtask #2
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1050 ms	440 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1235 ms	436 KB	Output is correct
11	Correct	1174 ms	436 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1262 ms	436 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 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	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	1272 ms	436 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1099 ms	436 KB	Output is correct
30	Correct	1048 ms	452 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1016 ms	436 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	1132 ms	432 KB	Output is correct
35	Correct	1548 ms	436 KB	Output is correct
36	Correct	1 ms	344 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1561 ms	432 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	1 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	258 ms	440 KB	Output is correct
43	Correct	111 ms	344 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	0 ms	348 KB	Output is correct
46	Correct	28 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Execution timed out	3021 ms	348 KB	Time limit exceeded
49	Halted	0 ms	0 KB	-

Subtask #3
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1050 ms	440 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1235 ms	436 KB	Output is correct
11	Correct	1174 ms	436 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1262 ms	436 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 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	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	1272 ms	436 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1099 ms	436 KB	Output is correct
30	Correct	1048 ms	452 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1016 ms	436 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	1132 ms	432 KB	Output is correct
35	Correct	1548 ms	436 KB	Output is correct
36	Correct	1 ms	344 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1561 ms	432 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	1 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	258 ms	440 KB	Output is correct
43	Correct	111 ms	344 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	0 ms	348 KB	Output is correct
46	Correct	28 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Execution timed out	3021 ms	348 KB	Time limit exceeded
49	Halted	0 ms	0 KB	-

Subtask #4
0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	17 ms	3160 KB	Output is correct
2	Correct	1 ms	1116 KB	Output is correct
3	Execution timed out	3083 ms	2268 KB	Time limit exceeded
4	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	1 ms	348 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1050 ms	440 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	1235 ms	436 KB	Output is correct
11	Correct	1174 ms	436 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	1262 ms	436 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	1 ms	344 KB	Output is correct
20	Correct	0 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	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	1272 ms	436 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	1099 ms	436 KB	Output is correct
30	Correct	1048 ms	452 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1016 ms	436 KB	Output is correct
33	Correct	1 ms	348 KB	Output is correct
34	Correct	1132 ms	432 KB	Output is correct
35	Correct	1548 ms	436 KB	Output is correct
36	Correct	1 ms	344 KB	Output is correct
37	Correct	1 ms	348 KB	Output is correct
38	Correct	1561 ms	432 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	1 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	258 ms	440 KB	Output is correct
43	Correct	111 ms	344 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	0 ms	348 KB	Output is correct
46	Correct	28 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Execution timed out	3021 ms	348 KB	Time limit exceeded
49	Halted	0 ms	0 KB	-

답안 #949871

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 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
0 / 20.0

Subtask #3
0 / 22.0

Subtask #4
0 / 19.0

Subtask #5
0 / 26.0