oj.uz

Submission #70664

# Submission time Handle Problem Language Result Execution time Memory
70664 2018-08-23T08:21:25 Z octopuses Alternating Current (BOI18_alternating) C++17
55 / 100
 3000 ms 5416 KB 
//Giorgi Kldiashvili
#include <bits/stdc++.h>

#define ll long long


using namespace std;

const int N = 100020;

int n, m;

inline int dis(int x, int y)
{
  if(y < x)
    return n + y - x + 1;
  return y - x + 1;
}

vector < pair < int, int > > A[N];
int answer[N], S[N][2];

int main()
{
  scanf("%d %d", &n, &m);
  int ci, cm; ci = cm = 0;
  for(int i = 1; i <= m; ++ i)
  {
    int x, y;
    scanf("%d %d", &x, &y);
    A[x - 1].push_back(make_pair(dis(x, y), i));
    if(dis(x, y) > cm)
      ci = x - 1, cm = dis(x, y);
  }

  for(ci = 0; ci < n; ++ ci)
  {
    for(int p = 0; p < n; ++ p)
    {
      int i = (p + ci) % n;
      for(int j = 0; j < A[i].size(); ++ j)
      {
        int x = A[i][j].first;
        int c = 0;
        for(int k = 0; k < n; ++ k)
        {
          int now = (i + k) % n;
          if(S[now][0] == 0)
          {
            c = 0;
            break;
          }
          if(S[now][1] == 0)
          {
            c = 1;
            break;
          }
        }
        answer[A[i][j].second] = c;
        for(int k = 0; k < x; ++ k)
          S[(i + k) % n][c] = 1;
      }
    }
    bool B = true;
    for(int i = 0; i < n; ++ i)
      if(S[i][0] == 0 || S[i][1] == 0)
      {
        B = false; break;
      }
    if(B) break;
    for(int i = 0; i < n; ++ i)
      S[i][0] = S[i][1] = 0;
  }
  for(int i = 0; i < n; ++ i)
    if(S[i][0] == 0 || S[i][1] == 0)
      return printf("impossible"), 0;
  for(int i = 1; i <= m; ++ i)
    printf("%d", answer[i]);
}

Compilation message

alternating.cpp: In function 'int main()':
alternating.cpp:41:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int j = 0; j < A[i].size(); ++ j)
                      ~~^~~~~~~~~~~~~
alternating.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &n, &m);
   ~~~~~^~~~~~~~~~~~~~~~~
alternating.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &x, &y);
     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2616 KB Output is correct
2 Correct 4 ms 2672 KB Output is correct
3 Correct 4 ms 2876 KB Output is correct
4 Correct 4 ms 2876 KB Output is correct
5 Correct 5 ms 2876 KB Output is correct
6 Correct 5 ms 2924 KB Output is correct
7 Correct 5 ms 2924 KB Output is correct
8 Correct 5 ms 2924 KB Output is correct
9 Correct 5 ms 2924 KB Output is correct
10 Correct 6 ms 2944 KB Output is correct
11 Correct 9 ms 2944 KB Output is correct
12 Correct 6 ms 2952 KB Output is correct
13 Correct 5 ms 2956 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 5 ms 3184 KB Output is correct
16 Correct 5 ms 3184 KB Output is correct
17 Correct 5 ms 3184 KB Output is correct
18 Correct 6 ms 3184 KB Output is correct
19 Correct 5 ms 3184 KB Output is correct
20 Correct 6 ms 3188 KB Output is correct
21 Correct 6 ms 3188 KB Output is correct
22 Correct 6 ms 3188 KB Output is correct
23 Correct 6 ms 3188 KB Output is correct
24 Correct 6 ms 3188 KB Output is correct
25 Correct 6 ms 3188 KB Output is correct
26 Correct 5 ms 3188 KB Output is correct
27 Correct 5 ms 3188 KB Output is correct
28 Correct 6 ms 3248 KB Output is correct
29 Correct 5 ms 3248 KB Output is correct
30 Correct 6 ms 3248 KB Output is correct
31 Correct 6 ms 3248 KB Output is correct
32 Correct 7 ms 3248 KB Output is correct
33 Correct 6 ms 3248 KB Output is correct
34 Correct 6 ms 3252 KB Output is correct
35 Correct 5 ms 3252 KB Output is correct
36 Correct 5 ms 3252 KB Output is correct
37 Correct 5 ms 3252 KB Output is correct
38 Correct 5 ms 3252 KB Output is correct
39 Correct 5 ms 3252 KB Output is correct
40 Correct 4 ms 3252 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2616 KB Output is correct
2 Correct 4 ms 2672 KB Output is correct
3 Correct 4 ms 2876 KB Output is correct
4 Correct 4 ms 2876 KB Output is correct
5 Correct 5 ms 2876 KB Output is correct
6 Correct 5 ms 2924 KB Output is correct
7 Correct 5 ms 2924 KB Output is correct
8 Correct 5 ms 2924 KB Output is correct
9 Correct 5 ms 2924 KB Output is correct
10 Correct 6 ms 2944 KB Output is correct
11 Correct 9 ms 2944 KB Output is correct
12 Correct 6 ms 2952 KB Output is correct
13 Correct 5 ms 2956 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 5 ms 3184 KB Output is correct
16 Correct 5 ms 3184 KB Output is correct
17 Correct 5 ms 3184 KB Output is correct
18 Correct 6 ms 3184 KB Output is correct
19 Correct 5 ms 3184 KB Output is correct
20 Correct 6 ms 3188 KB Output is correct
21 Correct 6 ms 3188 KB Output is correct
22 Correct 6 ms 3188 KB Output is correct
23 Correct 6 ms 3188 KB Output is correct
24 Correct 6 ms 3188 KB Output is correct
25 Correct 6 ms 3188 KB Output is correct
26 Correct 5 ms 3188 KB Output is correct
27 Correct 5 ms 3188 KB Output is correct
28 Correct 6 ms 3248 KB Output is correct
29 Correct 5 ms 3248 KB Output is correct
30 Correct 6 ms 3248 KB Output is correct
31 Correct 6 ms 3248 KB Output is correct
32 Correct 7 ms 3248 KB Output is correct
33 Correct 6 ms 3248 KB Output is correct
34 Correct 6 ms 3252 KB Output is correct
35 Correct 5 ms 3252 KB Output is correct
36 Correct 5 ms 3252 KB Output is correct
37 Correct 5 ms 3252 KB Output is correct
38 Correct 5 ms 3252 KB Output is correct
39 Correct 5 ms 3252 KB Output is correct
40 Correct 4 ms 3252 KB Output is correct
41 Correct 5 ms 3252 KB Output is correct
42 Correct 5 ms 3252 KB Output is correct
43 Correct 5 ms 3252 KB Output is correct
44 Correct 5 ms 3252 KB Output is correct
45 Correct 5 ms 3252 KB Output is correct
46 Correct 5 ms 3252 KB Output is correct
47 Correct 5 ms 3252 KB Output is correct
48 Correct 9 ms 3252 KB Output is correct
49 Correct 5 ms 3252 KB Output is correct
50 Correct 4 ms 3252 KB Output is correct
51 Correct 5 ms 3252 KB Output is correct
52 Correct 6 ms 3296 KB Output is correct
53 Correct 5 ms 3296 KB Output is correct
54 Correct 5 ms 3296 KB Output is correct
55 Correct 4 ms 3308 KB Output is correct
56 Correct 5 ms 3308 KB Output is correct
57 Correct 4 ms 3308 KB Output is correct
58 Correct 5 ms 3308 KB Output is correct
59 Correct 5 ms 3308 KB Output is correct
60 Correct 5 ms 3308 KB Output is correct
61 Correct 5 ms 3308 KB Output is correct
62 Correct 6 ms 3308 KB Output is correct
63 Correct 7 ms 3308 KB Output is correct
64 Correct 5 ms 3308 KB Output is correct
65 Correct 6 ms 3308 KB Output is correct
66 Correct 5 ms 3308 KB Output is correct
67 Correct 4 ms 3308 KB Output is correct
68 Correct 4 ms 3416 KB Output is correct
69 Correct 4 ms 3416 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2616 KB Output is correct
2 Correct 4 ms 2672 KB Output is correct
3 Correct 4 ms 2876 KB Output is correct
4 Correct 4 ms 2876 KB Output is correct
5 Correct 5 ms 2876 KB Output is correct
6 Correct 5 ms 2924 KB Output is correct
7 Correct 5 ms 2924 KB Output is correct
8 Correct 5 ms 2924 KB Output is correct
9 Correct 5 ms 2924 KB Output is correct
10 Correct 6 ms 2944 KB Output is correct
11 Correct 9 ms 2944 KB Output is correct
12 Correct 6 ms 2952 KB Output is correct
13 Correct 5 ms 2956 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 5 ms 3184 KB Output is correct
16 Correct 5 ms 3184 KB Output is correct
17 Correct 5 ms 3184 KB Output is correct
18 Correct 6 ms 3184 KB Output is correct
19 Correct 5 ms 3184 KB Output is correct
20 Correct 6 ms 3188 KB Output is correct
21 Correct 6 ms 3188 KB Output is correct
22 Correct 6 ms 3188 KB Output is correct
23 Correct 6 ms 3188 KB Output is correct
24 Correct 6 ms 3188 KB Output is correct
25 Correct 6 ms 3188 KB Output is correct
26 Correct 5 ms 3188 KB Output is correct
27 Correct 5 ms 3188 KB Output is correct
28 Correct 6 ms 3248 KB Output is correct
29 Correct 5 ms 3248 KB Output is correct
30 Correct 6 ms 3248 KB Output is correct
31 Correct 6 ms 3248 KB Output is correct
32 Correct 7 ms 3248 KB Output is correct
33 Correct 6 ms 3248 KB Output is correct
34 Correct 6 ms 3252 KB Output is correct
35 Correct 5 ms 3252 KB Output is correct
36 Correct 5 ms 3252 KB Output is correct
37 Correct 5 ms 3252 KB Output is correct
38 Correct 5 ms 3252 KB Output is correct
39 Correct 5 ms 3252 KB Output is correct
40 Correct 4 ms 3252 KB Output is correct
41 Correct 5 ms 3252 KB Output is correct
42 Correct 5 ms 3252 KB Output is correct
43 Correct 5 ms 3252 KB Output is correct
44 Correct 5 ms 3252 KB Output is correct
45 Correct 5 ms 3252 KB Output is correct
46 Correct 5 ms 3252 KB Output is correct
47 Correct 5 ms 3252 KB Output is correct
48 Correct 9 ms 3252 KB Output is correct
49 Correct 5 ms 3252 KB Output is correct
50 Correct 4 ms 3252 KB Output is correct
51 Correct 5 ms 3252 KB Output is correct
52 Correct 6 ms 3296 KB Output is correct
53 Correct 5 ms 3296 KB Output is correct
54 Correct 5 ms 3296 KB Output is correct
55 Correct 4 ms 3308 KB Output is correct
56 Correct 5 ms 3308 KB Output is correct
57 Correct 4 ms 3308 KB Output is correct
58 Correct 5 ms 3308 KB Output is correct
59 Correct 5 ms 3308 KB Output is correct
60 Correct 5 ms 3308 KB Output is correct
61 Correct 5 ms 3308 KB Output is correct
62 Correct 6 ms 3308 KB Output is correct
63 Correct 7 ms 3308 KB Output is correct
64 Correct 5 ms 3308 KB Output is correct
65 Correct 6 ms 3308 KB Output is correct
66 Correct 5 ms 3308 KB Output is correct
67 Correct 4 ms 3308 KB Output is correct
68 Correct 4 ms 3416 KB Output is correct
69 Correct 4 ms 3416 KB Output is correct
70 Correct 16 ms 3416 KB Output is correct
71 Correct 26 ms 3416 KB Output is correct
72 Correct 15 ms 3416 KB Output is correct
73 Correct 5 ms 3416 KB Output is correct
74 Correct 5 ms 3416 KB Output is correct
75 Correct 5 ms 3416 KB Output is correct
76 Correct 2660 ms 3424 KB Output is correct
77 Correct 7 ms 3424 KB Output is correct
78 Correct 21 ms 3424 KB Output is correct
79 Correct 20 ms 3456 KB Output is correct
80 Correct 68 ms 3456 KB Output is correct
81 Correct 5 ms 3456 KB Output is correct
82 Correct 5 ms 3456 KB Output is correct
83 Correct 5 ms 3456 KB Output is correct
84 Correct 6 ms 3456 KB Output is correct
85 Correct 7 ms 3456 KB Output is correct
86 Correct 7 ms 3456 KB Output is correct
87 Correct 5 ms 3456 KB Output is correct
88 Correct 6 ms 3456 KB Output is correct
89 Correct 2600 ms 3564 KB Output is correct
90 Correct 16 ms 3564 KB Output is correct
91 Correct 7 ms 3564 KB Output is correct
92 Correct 7 ms 3564 KB Output is correct
93 Correct 6 ms 3564 KB Output is correct
94 Correct 15 ms 3564 KB Output is correct
95 Correct 5 ms 3680 KB Output is correct
96 Correct 6 ms 3680 KB Output is correct
97 Correct 4 ms 3680 KB Output is correct
98 Correct 5 ms 3680 KB Output is correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3040 ms 5416 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2616 KB Output is correct
2 Correct 4 ms 2672 KB Output is correct
3 Correct 4 ms 2876 KB Output is correct
4 Correct 4 ms 2876 KB Output is correct
5 Correct 5 ms 2876 KB Output is correct
6 Correct 5 ms 2924 KB Output is correct
7 Correct 5 ms 2924 KB Output is correct
8 Correct 5 ms 2924 KB Output is correct
9 Correct 5 ms 2924 KB Output is correct
10 Correct 6 ms 2944 KB Output is correct
11 Correct 9 ms 2944 KB Output is correct
12 Correct 6 ms 2952 KB Output is correct
13 Correct 5 ms 2956 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 5 ms 3184 KB Output is correct
16 Correct 5 ms 3184 KB Output is correct
17 Correct 5 ms 3184 KB Output is correct
18 Correct 6 ms 3184 KB Output is correct
19 Correct 5 ms 3184 KB Output is correct
20 Correct 6 ms 3188 KB Output is correct
21 Correct 6 ms 3188 KB Output is correct
22 Correct 6 ms 3188 KB Output is correct
23 Correct 6 ms 3188 KB Output is correct
24 Correct 6 ms 3188 KB Output is correct
25 Correct 6 ms 3188 KB Output is correct
26 Correct 5 ms 3188 KB Output is correct
27 Correct 5 ms 3188 KB Output is correct
28 Correct 6 ms 3248 KB Output is correct
29 Correct 5 ms 3248 KB Output is correct
30 Correct 6 ms 3248 KB Output is correct
31 Correct 6 ms 3248 KB Output is correct
32 Correct 7 ms 3248 KB Output is correct
33 Correct 6 ms 3248 KB Output is correct
34 Correct 6 ms 3252 KB Output is correct
35 Correct 5 ms 3252 KB Output is correct
36 Correct 5 ms 3252 KB Output is correct
37 Correct 5 ms 3252 KB Output is correct
38 Correct 5 ms 3252 KB Output is correct
39 Correct 5 ms 3252 KB Output is correct
40 Correct 4 ms 3252 KB Output is correct
41 Correct 5 ms 3252 KB Output is correct
42 Correct 5 ms 3252 KB Output is correct
43 Correct 5 ms 3252 KB Output is correct
44 Correct 5 ms 3252 KB Output is correct
45 Correct 5 ms 3252 KB Output is correct
46 Correct 5 ms 3252 KB Output is correct
47 Correct 5 ms 3252 KB Output is correct
48 Correct 9 ms 3252 KB Output is correct
49 Correct 5 ms 3252 KB Output is correct
50 Correct 4 ms 3252 KB Output is correct
51 Correct 5 ms 3252 KB Output is correct
52 Correct 6 ms 3296 KB Output is correct
53 Correct 5 ms 3296 KB Output is correct
54 Correct 5 ms 3296 KB Output is correct
55 Correct 4 ms 3308 KB Output is correct
56 Correct 5 ms 3308 KB Output is correct
57 Correct 4 ms 3308 KB Output is correct
58 Correct 5 ms 3308 KB Output is correct
59 Correct 5 ms 3308 KB Output is correct
60 Correct 5 ms 3308 KB Output is correct
61 Correct 5 ms 3308 KB Output is correct
62 Correct 6 ms 3308 KB Output is correct
63 Correct 7 ms 3308 KB Output is correct
64 Correct 5 ms 3308 KB Output is correct
65 Correct 6 ms 3308 KB Output is correct
66 Correct 5 ms 3308 KB Output is correct
67 Correct 4 ms 3308 KB Output is correct
68 Correct 4 ms 3416 KB Output is correct
69 Correct 4 ms 3416 KB Output is correct
70 Correct 16 ms 3416 KB Output is correct
71 Correct 26 ms 3416 KB Output is correct
72 Correct 15 ms 3416 KB Output is correct
73 Correct 5 ms 3416 KB Output is correct
74 Correct 5 ms 3416 KB Output is correct
75 Correct 5 ms 3416 KB Output is correct
76 Correct 2660 ms 3424 KB Output is correct
77 Correct 7 ms 3424 KB Output is correct
78 Correct 21 ms 3424 KB Output is correct
79 Correct 20 ms 3456 KB Output is correct
80 Correct 68 ms 3456 KB Output is correct
81 Correct 5 ms 3456 KB Output is correct
82 Correct 5 ms 3456 KB Output is correct
83 Correct 5 ms 3456 KB Output is correct
84 Correct 6 ms 3456 KB Output is correct
85 Correct 7 ms 3456 KB Output is correct
86 Correct 7 ms 3456 KB Output is correct
87 Correct 5 ms 3456 KB Output is correct
88 Correct 6 ms 3456 KB Output is correct
89 Correct 2600 ms 3564 KB Output is correct
90 Correct 16 ms 3564 KB Output is correct
91 Correct 7 ms 3564 KB Output is correct
92 Correct 7 ms 3564 KB Output is correct
93 Correct 6 ms 3564 KB Output is correct
94 Correct 15 ms 3564 KB Output is correct
95 Correct 5 ms 3680 KB Output is correct
96 Correct 6 ms 3680 KB Output is correct
97 Correct 4 ms 3680 KB Output is correct
98 Correct 5 ms 3680 KB Output is correct
99 Execution timed out 3040 ms 5416 KB Time limit exceeded
100 Halted 0 ms 0 KB -