답안 #24254 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
24254	2017-06-03T12:13:26 Z	jiaqiyang	Cultivation (JOI17_cultivation)	C++14	80 / 100	2000 ms	6704 KB

cultivation

#include <cstdio>
#include <climits>
#include <vector>
#include <algorithm>

typedef long long i64;

const int N = 300 + 10;

i64 r, c;
int n;

struct Point {
  i64 x, y;
  Point() {}
  Point(i64 _x, i64 _y): x(_x), y(_y) {}
  inline bool operator< (const Point &rhs) const {
    return x < rhs.x || (x == rhs.x && y < rhs.y);
  }
} p[N];

struct Info {
  i64 a, b, c;
  Info() { a = b = c = 0; }
  Info(i64 _a, i64 _b, i64 _c): a(_a), b(_b), c(_c) {}
} f[N][N];

void init(int l) {
  std::vector<i64> cur;
  for (int r = l; r <= n; ++r) {
    int temp = cur.size();
    int k = std::lower_bound(cur.begin(), cur.end(), p[r].y) - cur.begin();
    cur.push_back(p[r].y);
    std::rotate(cur.begin() + k, cur.begin() + temp, cur.end());
    f[l][r].a = cur[0] - 1;
    f[l][r].b = c - cur.back();
    for (int i = 1; i < cur.size(); ++i) f[l][r].c = std::max(f[l][r].c, cur[i] - cur[i - 1] - 1);
  }
}

class Queue {
  std::pair<int, i64> q[4 * N];
  int f, r;
 public:
  void clear() {
    f = 1;
    r = 0;
  }
  void trim(int s) {
    while (f <= r && q[f].first < s) ++f;
  }
  void push(int x, i64 y) {
    while (f <= r && q[r].second <= y) --r;
    q[++r] = std::make_pair(x, y);
  }
  inline i64 front() const { return q[f].second; }
};

i64 solve(int len) {
  i64 res = INT_MAX;
  static Info info[4 * N];
  static i64 pool[4 * N], temp[4 * N];
  for (int i = 1; i <= n; ++i) {
    pool[i] = p[i].x;
    pool[i + n] = p[i].x + len;
    pool[i + 2 * n] = p[i].x + len + 1;
    pool[i + 3 * n] = p[i].x + r - 1;
  }
  std::merge(pool + 1, pool + n + 1, pool + n + 1, pool + 2 * n + 1, temp + 1);
  std::merge(pool + 2 * n + 1, pool + 3 * n + 1, pool + 3 * n + 1, pool + 4 * n + 1, temp + 2 * n + 1);
  std::merge(temp + 1, temp + 2 * n + 1, temp + 2 * n + 1, temp + 4 * n + 1, pool + 1);
  int tot = std::unique(pool + 1, pool + 4 * n + 1) - pool - 1;
  for (int i = 1, l = 1, r = 1; i <= tot; ++i) {
    while (l <= n && !(p[l].x <= pool[i] && pool[i] <= p[l].x + len)) ++l;
    for (r = std::max(l, r); r <= n && p[r].x <= pool[i] && pool[i] <= p[r].x + len;) ++r;
    info[i] = (l > n ? Info(INT_MAX, INT_MAX, INT_MAX) : f[l][r - 1]);
  }
  static Queue q[3];
  q[0].clear(), q[1].clear(), q[2].clear();
  for (int i = 1, j = 1; i <= tot; ++i) {
    i64 s = pool[i];
    q[0].trim(i), q[1].trim(i), q[2].trim(i);
    for (; j <= tot && pool[j] <= s + r - 1; ++j) q[0].push(j, info[j].a), q[1].push(j, info[j].b), q[2].push(j, info[j].c);
    res = std::min(res, std::max(q[0].front() + q[1].front(), q[2].front()));
  }
  return res;
}

int main() {
  scanf("%lld%lld%d", &r, &c, &n);
  for (int i = 1; i <= n; ++i) scanf("%lld%lld", &p[i].x, &p[i].y);
  std::sort(p + 1, p + n + 1);
  std::vector<i64> cur;
  for (int i = 1; i <= n; ++i) init(i);
  for (int i = 1; i <= n; ++i)
    for (int j = 1; j < i; ++j)
      cur.push_back(std::max(p[i].x - p[j].x - 1, 0LL));
  for (int i = 1; i <= n; ++i)
    for (int j = 1; j <= n; ++j)
      cur.push_back(p[i].x - 1 + r - p[j].x);
  for (int i = 1; i <= n; ++i) cur.push_back(p[i].x - 1), cur.push_back(r - p[i].x);
  cur.push_back(0);
  std::sort(cur.begin(), cur.end());
  cur.erase(std::unique(cur.begin(), cur.end()), cur.end());
  i64 ans = INT_MAX;
  for (int i = 0; i < cur.size(); ++i) ans = std::min(ans, cur[i] + solve(cur[i]));
  printf("%lld\n", ans);
  return 0;
}

Compilation message

cultivation.cpp: In function 'void init(int)':
cultivation.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i < cur.size(); ++i) f[l][r].c = std::max(f[l][r].c, cur[i] - cur[i - 1] - 1);
                       ^
cultivation.cpp: In function 'int main()':
cultivation.cpp:106:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < cur.size(); ++i) ans = std::min(ans, cur[i] + solve(cur[i]));
                     ^
cultivation.cpp:90:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%d", &r, &c, &n);
                                  ^
cultivation.cpp:91:67: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   for (int i = 1; i <= n; ++i) scanf("%lld%lld", &p[i].x, &p[i].y);
                                                                   ^

Subtask #1
5.0 / 5.0

#	결과	메모리	Grader output
1	Correct	3548 KB	Output is correct
2	Correct	3548 KB	Output is correct
3	Correct	3548 KB	Output is correct
4	Correct	3548 KB	Output is correct
5	Correct	3548 KB	Output is correct
6	Correct	3548 KB	Output is correct
7	Correct	3548 KB	Output is correct
8	Correct	3548 KB	Output is correct
9	Correct	3548 KB	Output is correct
10	Correct	3548 KB	Output is correct
11	Correct	3548 KB	Output is correct
12	Correct	3548 KB	Output is correct
13	Correct	3548 KB	Output is correct
14	Correct	3548 KB	Output is correct
15	Correct	3548 KB	Output is correct
16	Correct	3548 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	3548 KB	Output is correct
2	Correct	0 ms	3548 KB	Output is correct
3	Correct	0 ms	3548 KB	Output is correct
4	Correct	0 ms	3548 KB	Output is correct
5	Correct	0 ms	3548 KB	Output is correct
6	Correct	0 ms	3548 KB	Output is correct
7	Correct	0 ms	3548 KB	Output is correct
8	Correct	0 ms	3548 KB	Output is correct
9	Correct	0 ms	3548 KB	Output is correct
10	Correct	0 ms	3548 KB	Output is correct
11	Correct	0 ms	3548 KB	Output is correct
12	Correct	0 ms	3548 KB	Output is correct
13	Correct	0 ms	3548 KB	Output is correct
14	Correct	0 ms	3548 KB	Output is correct
15	Correct	0 ms	3548 KB	Output is correct
16	Correct	0 ms	3548 KB	Output is correct
17	Correct	0 ms	3548 KB	Output is correct
18	Correct	0 ms	3688 KB	Output is correct
19	Correct	0 ms	3548 KB	Output is correct
20	Correct	0 ms	3548 KB	Output is correct
21	Correct	0 ms	3688 KB	Output is correct
22	Correct	3 ms	4016 KB	Output is correct
23	Correct	0 ms	3548 KB	Output is correct
24	Correct	9 ms	4400 KB	Output is correct
25	Correct	0 ms	4400 KB	Output is correct
26	Correct	16 ms	6704 KB	Output is correct
27	Correct	16 ms	6704 KB	Output is correct
28	Correct	6 ms	4400 KB	Output is correct
29	Correct	23 ms	6704 KB	Output is correct
30	Correct	16 ms	6704 KB	Output is correct
31	Correct	13 ms	6704 KB	Output is correct
32	Correct	16 ms	6704 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	3548 KB	Output is correct
2	Correct	0 ms	3548 KB	Output is correct
3	Correct	0 ms	3548 KB	Output is correct
4	Correct	0 ms	3548 KB	Output is correct
5	Correct	0 ms	3548 KB	Output is correct
6	Correct	0 ms	3548 KB	Output is correct
7	Correct	0 ms	3548 KB	Output is correct
8	Correct	0 ms	3548 KB	Output is correct
9	Correct	0 ms	3548 KB	Output is correct
10	Correct	0 ms	3548 KB	Output is correct
11	Correct	0 ms	3548 KB	Output is correct
12	Correct	0 ms	3548 KB	Output is correct
13	Correct	0 ms	3548 KB	Output is correct
14	Correct	0 ms	3548 KB	Output is correct
15	Correct	0 ms	3548 KB	Output is correct
16	Correct	0 ms	3548 KB	Output is correct
17	Correct	0 ms	3548 KB	Output is correct
18	Correct	0 ms	3688 KB	Output is correct
19	Correct	0 ms	3548 KB	Output is correct
20	Correct	0 ms	3548 KB	Output is correct
21	Correct	0 ms	3688 KB	Output is correct
22	Correct	3 ms	4016 KB	Output is correct
23	Correct	0 ms	3548 KB	Output is correct
24	Correct	9 ms	4400 KB	Output is correct
25	Correct	0 ms	4400 KB	Output is correct
26	Correct	16 ms	6704 KB	Output is correct
27	Correct	16 ms	6704 KB	Output is correct
28	Correct	6 ms	4400 KB	Output is correct
29	Correct	23 ms	6704 KB	Output is correct
30	Correct	16 ms	6704 KB	Output is correct
31	Correct	13 ms	6704 KB	Output is correct
32	Correct	16 ms	6704 KB	Output is correct
33	Correct	9 ms	6704 KB	Output is correct
34	Correct	19 ms	6704 KB	Output is correct
35	Correct	16 ms	6704 KB	Output is correct
36	Correct	9 ms	6704 KB	Output is correct
37	Correct	13 ms	6704 KB	Output is correct
38	Correct	16 ms	6704 KB	Output is correct
39	Correct	13 ms	6704 KB	Output is correct
40	Correct	16 ms	6704 KB	Output is correct
41	Correct	16 ms	6704 KB	Output is correct
42	Correct	16 ms	6704 KB	Output is correct
43	Correct	16 ms	6704 KB	Output is correct
44	Correct	16 ms	6704 KB	Output is correct

Subtask #4
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	3548 KB	Output is correct
2	Correct	3 ms	3548 KB	Output is correct
3	Correct	6 ms	3548 KB	Output is correct
4	Correct	3 ms	3548 KB	Output is correct
5	Correct	6 ms	3548 KB	Output is correct
6	Correct	0 ms	3548 KB	Output is correct
7	Correct	0 ms	3548 KB	Output is correct
8	Correct	3 ms	3548 KB	Output is correct
9	Correct	3 ms	3548 KB	Output is correct
10	Correct	3 ms	3548 KB	Output is correct
11	Correct	3 ms	3548 KB	Output is correct
12	Correct	3 ms	3548 KB	Output is correct
13	Correct	0 ms	3548 KB	Output is correct
14	Correct	3 ms	3548 KB	Output is correct
15	Correct	0 ms	3548 KB	Output is correct
16	Correct	3 ms	3548 KB	Output is correct
17	Correct	3 ms	3548 KB	Output is correct
18	Correct	3 ms	3548 KB	Output is correct
19	Correct	3 ms	3548 KB	Output is correct
20	Correct	3 ms	3548 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	3548 KB	Output is correct
2	Correct	3 ms	3548 KB	Output is correct
3	Correct	6 ms	3548 KB	Output is correct
4	Correct	3 ms	3548 KB	Output is correct
5	Correct	6 ms	3548 KB	Output is correct
6	Correct	0 ms	3548 KB	Output is correct
7	Correct	0 ms	3548 KB	Output is correct
8	Correct	3 ms	3548 KB	Output is correct
9	Correct	3 ms	3548 KB	Output is correct
10	Correct	3 ms	3548 KB	Output is correct
11	Correct	3 ms	3548 KB	Output is correct
12	Correct	3 ms	3548 KB	Output is correct
13	Correct	0 ms	3548 KB	Output is correct
14	Correct	3 ms	3548 KB	Output is correct
15	Correct	0 ms	3548 KB	Output is correct
16	Correct	3 ms	3548 KB	Output is correct
17	Correct	3 ms	3548 KB	Output is correct
18	Correct	3 ms	3548 KB	Output is correct
19	Correct	3 ms	3548 KB	Output is correct
20	Correct	3 ms	3548 KB	Output is correct
21	Correct	113 ms	3820 KB	Output is correct
22	Correct	206 ms	3820 KB	Output is correct
23	Correct	213 ms	3820 KB	Output is correct
24	Correct	183 ms	3820 KB	Output is correct
25	Correct	203 ms	3820 KB	Output is correct
26	Correct	66 ms	3820 KB	Output is correct
27	Correct	209 ms	3820 KB	Output is correct
28	Correct	216 ms	3820 KB	Output is correct
29	Correct	199 ms	3820 KB	Output is correct
30	Correct	189 ms	3820 KB	Output is correct
31	Correct	203 ms	3820 KB	Output is correct
32	Correct	186 ms	3820 KB	Output is correct
33	Correct	186 ms	3820 KB	Output is correct
34	Correct	183 ms	3820 KB	Output is correct
35	Correct	173 ms	3820 KB	Output is correct
36	Correct	179 ms	3820 KB	Output is correct

Subtask #6
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	3548 KB	Output is correct
2	Correct	0 ms	3548 KB	Output is correct
3	Correct	0 ms	3548 KB	Output is correct
4	Correct	0 ms	3548 KB	Output is correct
5	Correct	0 ms	3548 KB	Output is correct
6	Correct	0 ms	3548 KB	Output is correct
7	Correct	0 ms	3548 KB	Output is correct
8	Correct	0 ms	3548 KB	Output is correct
9	Correct	0 ms	3548 KB	Output is correct
10	Correct	0 ms	3548 KB	Output is correct
11	Correct	0 ms	3548 KB	Output is correct
12	Correct	0 ms	3548 KB	Output is correct
13	Correct	0 ms	3548 KB	Output is correct
14	Correct	0 ms	3548 KB	Output is correct
15	Correct	0 ms	3548 KB	Output is correct
16	Correct	0 ms	3548 KB	Output is correct
17	Correct	0 ms	3548 KB	Output is correct
18	Correct	0 ms	3688 KB	Output is correct
19	Correct	0 ms	3548 KB	Output is correct
20	Correct	0 ms	3548 KB	Output is correct
21	Correct	0 ms	3688 KB	Output is correct
22	Correct	3 ms	4016 KB	Output is correct
23	Correct	0 ms	3548 KB	Output is correct
24	Correct	9 ms	4400 KB	Output is correct
25	Correct	0 ms	4400 KB	Output is correct
26	Correct	16 ms	6704 KB	Output is correct
27	Correct	16 ms	6704 KB	Output is correct
28	Correct	6 ms	4400 KB	Output is correct
29	Correct	23 ms	6704 KB	Output is correct
30	Correct	16 ms	6704 KB	Output is correct
31	Correct	13 ms	6704 KB	Output is correct
32	Correct	16 ms	6704 KB	Output is correct
33	Correct	9 ms	6704 KB	Output is correct
34	Correct	19 ms	6704 KB	Output is correct
35	Correct	16 ms	6704 KB	Output is correct
36	Correct	9 ms	6704 KB	Output is correct
37	Correct	13 ms	6704 KB	Output is correct
38	Correct	16 ms	6704 KB	Output is correct
39	Correct	13 ms	6704 KB	Output is correct
40	Correct	16 ms	6704 KB	Output is correct
41	Correct	16 ms	6704 KB	Output is correct
42	Correct	16 ms	6704 KB	Output is correct
43	Correct	16 ms	6704 KB	Output is correct
44	Correct	16 ms	6704 KB	Output is correct
45	Correct	0 ms	3548 KB	Output is correct
46	Correct	3 ms	3548 KB	Output is correct
47	Correct	6 ms	3548 KB	Output is correct
48	Correct	3 ms	3548 KB	Output is correct
49	Correct	6 ms	3548 KB	Output is correct
50	Correct	0 ms	3548 KB	Output is correct
51	Correct	0 ms	3548 KB	Output is correct
52	Correct	3 ms	3548 KB	Output is correct
53	Correct	3 ms	3548 KB	Output is correct
54	Correct	3 ms	3548 KB	Output is correct
55	Correct	3 ms	3548 KB	Output is correct
56	Correct	3 ms	3548 KB	Output is correct
57	Correct	0 ms	3548 KB	Output is correct
58	Correct	3 ms	3548 KB	Output is correct
59	Correct	0 ms	3548 KB	Output is correct
60	Correct	3 ms	3548 KB	Output is correct
61	Correct	3 ms	3548 KB	Output is correct
62	Correct	3 ms	3548 KB	Output is correct
63	Correct	3 ms	3548 KB	Output is correct
64	Correct	3 ms	3548 KB	Output is correct
65	Correct	113 ms	3820 KB	Output is correct
66	Correct	206 ms	3820 KB	Output is correct
67	Correct	213 ms	3820 KB	Output is correct
68	Correct	183 ms	3820 KB	Output is correct
69	Correct	203 ms	3820 KB	Output is correct
70	Correct	66 ms	3820 KB	Output is correct
71	Correct	209 ms	3820 KB	Output is correct
72	Correct	216 ms	3820 KB	Output is correct
73	Correct	199 ms	3820 KB	Output is correct
74	Correct	189 ms	3820 KB	Output is correct
75	Correct	203 ms	3820 KB	Output is correct
76	Correct	186 ms	3820 KB	Output is correct
77	Correct	186 ms	3820 KB	Output is correct
78	Correct	183 ms	3820 KB	Output is correct
79	Correct	173 ms	3820 KB	Output is correct
80	Correct	179 ms	3820 KB	Output is correct
81	Execution timed out	2000 ms	5168 KB	Execution timed out
82	Halted	0 ms	0 KB	-

답안 #24254

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 10.0 / 10.0

Subtask #3 15.0 / 15.0

Subtask #4 30.0 / 30.0

Subtask #5 20.0 / 20.0

Subtask #6 0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
10.0 / 10.0

Subtask #3
15.0 / 15.0

Subtask #4
30.0 / 30.0

Subtask #5
20.0 / 20.0

Subtask #6
0 / 20.0