Submission #171293

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
171293	2019-12-28T08:38:33 Z	mehrdad_sohrabi	Alternating Current (BOI18_alternating)	C++14	13 / 100	3000 ms	2140 KB

alternating

#include <bits/stdc++.h>
typedef long long int ll;
typedef long double ld;
#define pb push_back
#define pii pair < ll , ll >
#define F first
#define S second
#define endl '\n'
#define int long long
#define sync ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
using namespace std;
/// khodaya komak kon
/// ya navid navid
const int N=1e5+100;
int n, m, L[N], R[N];
bool M[N][2];
string S(int mask) {
	string s = "";
	for (int i = 0; i < m; i++) s += '0' + ((mask >> i) & 1);
	return s;
}
int32_t main() {

	sync;
	cin >> n >> m;
	for (int i = 0; i < m; i++)
        cin >> L[i] >> R[i], L[i]--, R[i]--;
	for (int mask = 0; mask < (1 << m); mask++) {
		for (int i = 0; i < n; i++) M[i][0] = M[i][1] = false;
		for (int i = 0; i < m; i++) {
			for (int j = L[i]; j != R[i]; j = (j + 1) % n) M[j][(mask >> i) & 1] = true;
			M[R[i]][(mask >> i) & 1] = true;
		}
		bool flag = true;
		for (int i = 0; i < n; i++) flag &= M[i][0] & M[i][1];
		if (flag){
            cout << S(mask);
            return 0;
		}
	}
	cout << "impossible" << endl;

	return 0;
}

Subtask #1
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	4 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	296 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	3 ms	504 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	4 ms	244 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	3 ms	376 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	5 ms	376 KB	Output is correct
23	Correct	5 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	3 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	4 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	34 ms	380 KB	Output is correct
36	Correct	4 ms	504 KB	Output is correct
37	Correct	6 ms	376 KB	Output is correct
38	Correct	17 ms	248 KB	Output is correct
39	Correct	1 ms	376 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct

Subtask #2
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	4 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	296 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	3 ms	504 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	4 ms	244 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	3 ms	376 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	5 ms	376 KB	Output is correct
23	Correct	5 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	3 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	4 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	34 ms	380 KB	Output is correct
36	Correct	4 ms	504 KB	Output is correct
37	Correct	6 ms	376 KB	Output is correct
38	Correct	17 ms	248 KB	Output is correct
39	Correct	1 ms	376 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	6 ms	376 KB	Output is correct
43	Incorrect	2 ms	376 KB	'impossible' claimed, but there is a solution
44	Halted	0 ms	0 KB	-

Subtask #3
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	4 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	296 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	3 ms	504 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	4 ms	244 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	3 ms	376 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	5 ms	376 KB	Output is correct
23	Correct	5 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	3 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	4 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	34 ms	380 KB	Output is correct
36	Correct	4 ms	504 KB	Output is correct
37	Correct	6 ms	376 KB	Output is correct
38	Correct	17 ms	248 KB	Output is correct
39	Correct	1 ms	376 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	6 ms	376 KB	Output is correct
43	Incorrect	2 ms	376 KB	'impossible' claimed, but there is a solution
44	Halted	0 ms	0 KB	-

Subtask #4
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	3033 ms	2140 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 26.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	4 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	296 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	3 ms	504 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	4 ms	244 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	3 ms	376 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	5 ms	376 KB	Output is correct
23	Correct	5 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	3 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	4 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	376 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	2 ms	376 KB	Output is correct
35	Correct	34 ms	380 KB	Output is correct
36	Correct	4 ms	504 KB	Output is correct
37	Correct	6 ms	376 KB	Output is correct
38	Correct	17 ms	248 KB	Output is correct
39	Correct	1 ms	376 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	2 ms	376 KB	Output is correct
42	Correct	6 ms	376 KB	Output is correct
43	Incorrect	2 ms	376 KB	'impossible' claimed, but there is a solution
44	Halted	0 ms	0 KB	-

Submission #171293

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