답안 #22994 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
22994	2017-05-01T03:08:12 Z	model_code	Tug of War (BOI15_tug)	C++11	100 / 100	736 ms	9360 KB

/* Tug of War
   Autor: Piotr Smulewicz
 */
#include <iostream>
#include <numeric>
#include <vector>
#include <cstdlib>
using namespace std;
const int SIZE = 30001;
const int MAX_STRENGHT = 20;
const int BACK_PACK_SIZE = SIZE * MAX_STRENGHT + 1;
int persons[SIZE * 2][2];
int str[SIZE * 2];
bool assigned[SIZE * 2];
vector<int> spots[SIZE * 2];
int item[BACK_PACK_SIZE];
unsigned int opt[SIZE * 2];
bool back_pack[BACK_PACK_SIZE + 1];
int n, j, s, a, b, pe, mi, k, sum_all, sum, res;
int main() {
  ios_base::sync_with_stdio(false);
  res = BACK_PACK_SIZE;
  cin >> n >> k;
  for (size_t i = 0; i < n * 2u; i++) {
    cin >> a >> b >> s;
    str[i] = s;
    persons[i][0] = a * 2;
    persons[i][1] = b * 2 + 1;
    spots[a * 2].push_back(i);
    spots[b * 2 + 1].push_back(i);
  }
  for (size_t s_pe = 0; s_pe < 2u * n; s_pe++) {
    pe = s_pe;
    while (!assigned[pe]) {
      for (j = 0; j < 2; j++) {
        mi = persons[pe][j];
        if (opt[mi] + 1 == spots[mi].size()) {
          assigned[pe] = true;
          sum += (1 - 2 * (mi % 2)) * str[pe];
          mi = persons[pe][1 - j];
          opt[mi]++;
          break;
        }
      }
      if (spots[mi].size() == opt[mi] + 1) {
        unsigned int poz = 0;
        while (assigned[spots[mi][poz]] && poz < spots[mi].size())
          poz++;
        if (poz < spots[mi].size())
          pe = spots[mi][poz];
        else
          break;
      } else
        break;
    }
  }
  item[abs(sum)]++;
  sum_all += abs(sum);
  for (int s_pe = 0; s_pe < 2 * n; s_pe++) {
    sum = 0;
    pe = s_pe;
    int st = 0;
    int mi2 = persons[pe][1];
    if (assigned[pe])
      continue;
    while (!assigned[pe]) {
      sum += (1 - 2 * st) * str[pe];
      assigned[pe] = true;
      mi = persons[pe][st];
      size_t poz = 0;
      while (poz < spots[mi].size() && assigned[spots[mi][poz]])
        poz++;
      if (poz < spots[mi].size())
        pe = spots[mi][poz];
      st = 1 - st;
    }
    if (mi != mi2) {
      cout << "NO" << endl;
      return 0;
    }
    if (sum != 0)
      item[abs(sum)]++;
    sum_all += abs(sum);
  }
  back_pack[0] = true;
  for (size_t i = 0; i < BACK_PACK_SIZE*1u; i++) {
    if (item[i] == 0u)
      continue;
    // cout<<"it"<<item[i]<<endl;
    for (int j = BACK_PACK_SIZE; j >= 0; --j) {
      if (back_pack[j]) {
        for (int l = 1; l <= item[i] && back_pack[j + l * i] == false; l++)
          back_pack[j + l * i] = true;
      }
    }
  }
  for (int j = BACK_PACK_SIZE; j >= 0; --j) {
    if (back_pack[j])
      res = min(res, abs(sum_all - 2 * j));
  }
  // cout<<"res "<<res<<" k: "<<k<<endl;
  if (res <= k)
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
}

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	7512 KB	Output is correct
2	Correct	6 ms	7512 KB	Output is correct
3	Correct	6 ms	7512 KB	Output is correct
4	Correct	6 ms	7512 KB	Output is correct
5	Correct	3 ms	7512 KB	Output is correct
6	Correct	3 ms	7512 KB	Output is correct
7	Correct	6 ms	7512 KB	Output is correct
8	Correct	6 ms	7512 KB	Output is correct
9	Correct	6 ms	7512 KB	Output is correct
10	Correct	6 ms	7512 KB	Output is correct
11	Correct	6 ms	7512 KB	Output is correct
12	Correct	6 ms	7512 KB	Output is correct
13	Correct	6 ms	7512 KB	Output is correct
14	Correct	6 ms	7512 KB	Output is correct
15	Correct	6 ms	7512 KB	Output is correct
16	Correct	3 ms	7512 KB	Output is correct
17	Correct	6 ms	7512 KB	Output is correct
18	Correct	6 ms	7512 KB	Output is correct
19	Correct	6 ms	7512 KB	Output is correct
20	Correct	3 ms	7512 KB	Output is correct
21	Correct	0 ms	7512 KB	Output is correct
22	Correct	3 ms	7512 KB	Output is correct
23	Correct	3 ms	7512 KB	Output is correct
24	Correct	6 ms	7512 KB	Output is correct
25	Correct	6 ms	7512 KB	Output is correct

Subtask #2
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	7512 KB	Output is correct
2	Correct	6 ms	7512 KB	Output is correct
3	Correct	6 ms	7512 KB	Output is correct
4	Correct	6 ms	7512 KB	Output is correct
5	Correct	3 ms	7512 KB	Output is correct
6	Correct	3 ms	7512 KB	Output is correct
7	Correct	6 ms	7512 KB	Output is correct
8	Correct	6 ms	7512 KB	Output is correct
9	Correct	6 ms	7512 KB	Output is correct
10	Correct	6 ms	7512 KB	Output is correct
11	Correct	6 ms	7512 KB	Output is correct
12	Correct	6 ms	7512 KB	Output is correct
13	Correct	6 ms	7512 KB	Output is correct
14	Correct	6 ms	7512 KB	Output is correct
15	Correct	6 ms	7512 KB	Output is correct
16	Correct	3 ms	7512 KB	Output is correct
17	Correct	6 ms	7512 KB	Output is correct
18	Correct	6 ms	7512 KB	Output is correct
19	Correct	6 ms	7512 KB	Output is correct
20	Correct	3 ms	7512 KB	Output is correct
21	Correct	0 ms	7512 KB	Output is correct
22	Correct	3 ms	7512 KB	Output is correct
23	Correct	3 ms	7512 KB	Output is correct
24	Correct	6 ms	7512 KB	Output is correct
25	Correct	6 ms	7512 KB	Output is correct
26	Correct	13 ms	7644 KB	Output is correct
27	Correct	159 ms	7644 KB	Output is correct
28	Correct	16 ms	7644 KB	Output is correct
29	Correct	149 ms	7644 KB	Output is correct
30	Correct	9 ms	7644 KB	Output is correct
31	Correct	159 ms	7644 KB	Output is correct
32	Correct	13 ms	7644 KB	Output is correct
33	Correct	153 ms	7644 KB	Output is correct
34	Correct	9 ms	7644 KB	Output is correct
35	Correct	149 ms	7644 KB	Output is correct
36	Correct	16 ms	7644 KB	Output is correct
37	Correct	159 ms	7644 KB	Output is correct
38	Correct	13 ms	7644 KB	Output is correct
39	Correct	149 ms	7644 KB	Output is correct
40	Correct	16 ms	7644 KB	Output is correct
41	Correct	156 ms	7644 KB	Output is correct
42	Correct	13 ms	7644 KB	Output is correct
43	Correct	149 ms	7644 KB	Output is correct
44	Correct	23 ms	7644 KB	Output is correct
45	Correct	156 ms	7644 KB	Output is correct
46	Correct	13 ms	7644 KB	Output is correct
47	Correct	3 ms	7644 KB	Output is correct
48	Correct	19 ms	7644 KB	Output is correct
49	Correct	16 ms	7644 KB	Output is correct
50	Correct	16 ms	7644 KB	Output is correct
51	Correct	16 ms	7644 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	8040 KB	Output is correct
2	Correct	9 ms	8040 KB	Output is correct
3	Correct	6 ms	8040 KB	Output is correct
4	Correct	9 ms	8040 KB	Output is correct
5	Correct	6 ms	8040 KB	Output is correct
6	Correct	9 ms	8040 KB	Output is correct
7	Correct	6 ms	8040 KB	Output is correct
8	Correct	9 ms	8040 KB	Output is correct
9	Correct	13 ms	8040 KB	Output is correct
10	Correct	6 ms	8040 KB	Output is correct
11	Correct	13 ms	8040 KB	Output is correct
12	Correct	9 ms	8040 KB	Output is correct
13	Correct	13 ms	8040 KB	Output is correct
14	Correct	9 ms	8040 KB	Output is correct
15	Correct	9 ms	8040 KB	Output is correct
16	Correct	9 ms	8040 KB	Output is correct
17	Correct	9 ms	8040 KB	Output is correct
18	Correct	13 ms	8040 KB	Output is correct
19	Correct	9 ms	8040 KB	Output is correct
20	Correct	6 ms	8040 KB	Output is correct
21	Correct	9 ms	8040 KB	Output is correct
22	Correct	13 ms	8172 KB	Output is correct

Subtask #4
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	7512 KB	Output is correct
2	Correct	6 ms	7512 KB	Output is correct
3	Correct	6 ms	7512 KB	Output is correct
4	Correct	6 ms	7512 KB	Output is correct
5	Correct	3 ms	7512 KB	Output is correct
6	Correct	3 ms	7512 KB	Output is correct
7	Correct	6 ms	7512 KB	Output is correct
8	Correct	6 ms	7512 KB	Output is correct
9	Correct	6 ms	7512 KB	Output is correct
10	Correct	6 ms	7512 KB	Output is correct
11	Correct	6 ms	7512 KB	Output is correct
12	Correct	6 ms	7512 KB	Output is correct
13	Correct	6 ms	7512 KB	Output is correct
14	Correct	6 ms	7512 KB	Output is correct
15	Correct	6 ms	7512 KB	Output is correct
16	Correct	3 ms	7512 KB	Output is correct
17	Correct	6 ms	7512 KB	Output is correct
18	Correct	6 ms	7512 KB	Output is correct
19	Correct	6 ms	7512 KB	Output is correct
20	Correct	3 ms	7512 KB	Output is correct
21	Correct	0 ms	7512 KB	Output is correct
22	Correct	3 ms	7512 KB	Output is correct
23	Correct	3 ms	7512 KB	Output is correct
24	Correct	6 ms	7512 KB	Output is correct
25	Correct	6 ms	7512 KB	Output is correct
26	Correct	13 ms	7644 KB	Output is correct
27	Correct	159 ms	7644 KB	Output is correct
28	Correct	16 ms	7644 KB	Output is correct
29	Correct	149 ms	7644 KB	Output is correct
30	Correct	9 ms	7644 KB	Output is correct
31	Correct	159 ms	7644 KB	Output is correct
32	Correct	13 ms	7644 KB	Output is correct
33	Correct	153 ms	7644 KB	Output is correct
34	Correct	9 ms	7644 KB	Output is correct
35	Correct	149 ms	7644 KB	Output is correct
36	Correct	16 ms	7644 KB	Output is correct
37	Correct	159 ms	7644 KB	Output is correct
38	Correct	13 ms	7644 KB	Output is correct
39	Correct	149 ms	7644 KB	Output is correct
40	Correct	16 ms	7644 KB	Output is correct
41	Correct	156 ms	7644 KB	Output is correct
42	Correct	13 ms	7644 KB	Output is correct
43	Correct	149 ms	7644 KB	Output is correct
44	Correct	23 ms	7644 KB	Output is correct
45	Correct	156 ms	7644 KB	Output is correct
46	Correct	13 ms	7644 KB	Output is correct
47	Correct	3 ms	7644 KB	Output is correct
48	Correct	19 ms	7644 KB	Output is correct
49	Correct	16 ms	7644 KB	Output is correct
50	Correct	16 ms	7644 KB	Output is correct
51	Correct	16 ms	7644 KB	Output is correct
52	Correct	13 ms	8040 KB	Output is correct
53	Correct	9 ms	8040 KB	Output is correct
54	Correct	6 ms	8040 KB	Output is correct
55	Correct	9 ms	8040 KB	Output is correct
56	Correct	6 ms	8040 KB	Output is correct
57	Correct	9 ms	8040 KB	Output is correct
58	Correct	6 ms	8040 KB	Output is correct
59	Correct	9 ms	8040 KB	Output is correct
60	Correct	13 ms	8040 KB	Output is correct
61	Correct	6 ms	8040 KB	Output is correct
62	Correct	13 ms	8040 KB	Output is correct
63	Correct	9 ms	8040 KB	Output is correct
64	Correct	13 ms	8040 KB	Output is correct
65	Correct	9 ms	8040 KB	Output is correct
66	Correct	9 ms	8040 KB	Output is correct
67	Correct	9 ms	8040 KB	Output is correct
68	Correct	9 ms	8040 KB	Output is correct
69	Correct	13 ms	8040 KB	Output is correct
70	Correct	9 ms	8040 KB	Output is correct
71	Correct	6 ms	8040 KB	Output is correct
72	Correct	9 ms	8040 KB	Output is correct
73	Correct	13 ms	8172 KB	Output is correct
74	Correct	53 ms	9360 KB	Output is correct
75	Correct	716 ms	9360 KB	Output is correct
76	Correct	49 ms	9360 KB	Output is correct
77	Correct	719 ms	9360 KB	Output is correct
78	Correct	46 ms	9360 KB	Output is correct
79	Correct	59 ms	9360 KB	Output is correct
80	Correct	716 ms	9360 KB	Output is correct
81	Correct	59 ms	9360 KB	Output is correct
82	Correct	33 ms	9360 KB	Output is correct
83	Correct	49 ms	9360 KB	Output is correct
84	Correct	723 ms	9360 KB	Output is correct
85	Correct	66 ms	9360 KB	Output is correct
86	Correct	736 ms	9360 KB	Output is correct
87	Correct	46 ms	9360 KB	Output is correct
88	Correct	716 ms	9360 KB	Output is correct
89	Correct	46 ms	9360 KB	Output is correct
90	Correct	719 ms	9360 KB	Output is correct
91	Correct	63 ms	9360 KB	Output is correct
92	Correct	719 ms	9360 KB	Output is correct
93	Correct	53 ms	9360 KB	Output is correct
94	Correct	29 ms	9228 KB	Output is correct
95	Correct	56 ms	9360 KB	Output is correct
96	Correct	53 ms	9360 KB	Output is correct
97	Correct	49 ms	9360 KB	Output is correct
98	Correct	43 ms	9360 KB	Output is correct

답안 #22994

Compilation message

Subtask #1 18.0 / 18.0

Subtask #2 30.0 / 30.0

Subtask #3 23.0 / 23.0

Subtask #4 29.0 / 29.0

Subtask #1
18.0 / 18.0

Subtask #2
30.0 / 30.0

Subtask #3
23.0 / 23.0

Subtask #4
29.0 / 29.0