oj.uz

Submission #589757

# Submission time Handle Problem Language Result Execution time Memory
589757 2022-07-05T08:39:33 Z loctildore Tug of War (BOI15_tug) C++14
71 / 100
 406 ms 4592 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define endl '\n'
#define all(x) begin(x), end(x)
int n,k,ori=600069;
int l[30069],r[30069],s[30069];
bool done[30069];
set<int> grph[30069];
bitset<600069*2> bst;
void check(int x) {
  if (done[x]) {
    return;
  }
  if (grph[x].size()==0) {
    cout<<"NO"<<endl;
    exit(0);
  }
  if (grph[x].size()!=1) {
    return;
  }
  done[x]=true;
  int i=*grph[x].begin();
  ori+=(x<n?-s[i]:s[i]);
  grph[l[i]].erase(i);
  grph[r[i]].erase(i);
  check(l[i]);
  check(r[i]);
}
int dfs(int x, int lst=-1) {
  if (done[x]) {
    return 0;
  }
  done[x]=true;
  for (auto i : grph[x]) {
    if (l[i]!=lst&&l[i]!=x) {
      return s[i]-dfs(l[i],x);
    }
    if (lst==l[i]) {
      lst=-1;
    }
    if (r[i]!=lst&&r[i]!=x) {
      return s[i]-dfs(r[i],x);
    }
    if (lst==r[i]) {
      lst=-1;
    }
  }
  return 0;
}
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cin>>n>>k;
  for (int i = 0; i < 2*n; i++) {
    cin>>l[i]>>r[i]>>s[i];
    l[i]--;r[i]--;
    r[i]+=n;
    grph[l[i]].insert(i);
    grph[r[i]].insert(i);
  }
  for (int i = 0; i < 2*n; i++) {
    check(i);
  }
  bst[ori]=true;
  for (int i = 0; i < 2*n; i++) {
    if (done[i]) {
      continue;
    }
    int tmp=dfs(i);
    tmp=abs(tmp);
    bst=bst<<tmp;
    bst|=bst>>(2*tmp);
  }
  for (int i = 600069-k; i <= 600069+k; i++) {
    if (bst[i]) {
      cout<<"YES"<<endl;
      return 0;
    }
  }
  cout<<"NO"<<endl;
  return 0;
}

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2196 KB Output is correct
2 Correct 2 ms 2132 KB Output is correct
3 Correct 2 ms 2176 KB Output is correct
4 Correct 3 ms 2132 KB Output is correct
5 Correct 2 ms 2132 KB Output is correct
6 Correct 2 ms 2132 KB Output is correct
7 Correct 3 ms 2132 KB Output is correct
8 Correct 2 ms 2132 KB Output is correct
9 Correct 3 ms 2148 KB Output is correct
10 Correct 2 ms 2132 KB Output is correct
11 Correct 2 ms 2152 KB Output is correct
12 Correct 2 ms 2168 KB Output is correct
13 Correct 2 ms 2132 KB Output is correct
14 Correct 2 ms 2164 KB Output is correct
15 Correct 2 ms 2132 KB Output is correct
16 Correct 2 ms 2132 KB Output is correct
17 Correct 2 ms 2132 KB Output is correct
18 Correct 2 ms 2132 KB Output is correct
19 Correct 2 ms 2132 KB Output is correct
20 Correct 2 ms 2132 KB Output is correct
21 Correct 1 ms 2004 KB Output is correct
22 Correct 2 ms 2132 KB Output is correct
23 Correct 3 ms 2168 KB Output is correct
24 Correct 2 ms 2132 KB Output is correct
25 Correct 2 ms 2168 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2196 KB Output is correct
2 Correct 2 ms 2132 KB Output is correct
3 Correct 2 ms 2176 KB Output is correct
4 Correct 3 ms 2132 KB Output is correct
5 Correct 2 ms 2132 KB Output is correct
6 Correct 2 ms 2132 KB Output is correct
7 Correct 3 ms 2132 KB Output is correct
8 Correct 2 ms 2132 KB Output is correct
9 Correct 3 ms 2148 KB Output is correct
10 Correct 2 ms 2132 KB Output is correct
11 Correct 2 ms 2152 KB Output is correct
12 Correct 2 ms 2168 KB Output is correct
13 Correct 2 ms 2132 KB Output is correct
14 Correct 2 ms 2164 KB Output is correct
15 Correct 2 ms 2132 KB Output is correct
16 Correct 2 ms 2132 KB Output is correct
17 Correct 2 ms 2132 KB Output is correct
18 Correct 2 ms 2132 KB Output is correct
19 Correct 2 ms 2132 KB Output is correct
20 Correct 2 ms 2132 KB Output is correct
21 Correct 1 ms 2004 KB Output is correct
22 Correct 2 ms 2132 KB Output is correct
23 Correct 3 ms 2168 KB Output is correct
24 Correct 2 ms 2132 KB Output is correct
25 Correct 2 ms 2168 KB Output is correct
26 Correct 130 ms 2644 KB Output is correct
27 Correct 20 ms 2568 KB Output is correct
28 Correct 135 ms 2652 KB Output is correct
29 Correct 25 ms 2644 KB Output is correct
30 Correct 133 ms 2648 KB Output is correct
31 Correct 22 ms 2564 KB Output is correct
32 Correct 139 ms 2644 KB Output is correct
33 Correct 20 ms 2644 KB Output is correct
34 Correct 13 ms 2644 KB Output is correct
35 Correct 21 ms 2660 KB Output is correct
36 Correct 140 ms 2648 KB Output is correct
37 Correct 22 ms 2644 KB Output is correct
38 Correct 133 ms 2644 KB Output is correct
39 Correct 20 ms 2560 KB Output is correct
40 Correct 128 ms 2644 KB Output is correct
41 Correct 20 ms 2644 KB Output is correct
42 Correct 165 ms 2648 KB Output is correct
43 Correct 28 ms 2644 KB Output is correct
44 Correct 138 ms 2644 KB Output is correct
45 Correct 20 ms 2644 KB Output is correct
46 Correct 135 ms 2644 KB Output is correct
47 Correct 3 ms 2516 KB Output is correct
48 Correct 66 ms 2636 KB Output is correct
49 Correct 65 ms 2772 KB Output is correct
50 Correct 129 ms 2644 KB Output is correct
51 Correct 157 ms 2648 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 351 ms 4564 KB Output is correct
2 Correct 9 ms 4356 KB Output is correct
3 Correct 403 ms 4536 KB Output is correct
4 Correct 10 ms 4308 KB Output is correct
5 Correct 328 ms 4536 KB Output is correct
6 Correct 11 ms 4284 KB Output is correct
7 Correct 388 ms 4536 KB Output is correct
8 Correct 9 ms 4360 KB Output is correct
9 Correct 361 ms 4560 KB Output is correct
10 Correct 10 ms 4288 KB Output is correct
11 Correct 387 ms 4536 KB Output is correct
12 Correct 12 ms 4400 KB Output is correct
13 Correct 355 ms 4556 KB Output is correct
14 Correct 321 ms 4532 KB Output is correct
15 Correct 9 ms 4388 KB Output is correct
16 Correct 328 ms 4552 KB Output is correct
17 Correct 9 ms 4308 KB Output is correct
18 Correct 406 ms 4484 KB Output is correct
19 Correct 17 ms 4336 KB Output is correct
20 Correct 330 ms 4592 KB Output is correct
21 Correct 13 ms 4400 KB Output is correct
22 Correct 224 ms 4536 KB Output is correct

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2196 KB Output is correct
2 Correct 2 ms 2132 KB Output is correct
3 Correct 2 ms 2176 KB Output is correct
4 Correct 3 ms 2132 KB Output is correct
5 Correct 2 ms 2132 KB Output is correct
6 Correct 2 ms 2132 KB Output is correct
7 Correct 3 ms 2132 KB Output is correct
8 Correct 2 ms 2132 KB Output is correct
9 Correct 3 ms 2148 KB Output is correct
10 Correct 2 ms 2132 KB Output is correct
11 Correct 2 ms 2152 KB Output is correct
12 Correct 2 ms 2168 KB Output is correct
13 Correct 2 ms 2132 KB Output is correct
14 Correct 2 ms 2164 KB Output is correct
15 Correct 2 ms 2132 KB Output is correct
16 Correct 2 ms 2132 KB Output is correct
17 Correct 2 ms 2132 KB Output is correct
18 Correct 2 ms 2132 KB Output is correct
19 Correct 2 ms 2132 KB Output is correct
20 Correct 2 ms 2132 KB Output is correct
21 Correct 1 ms 2004 KB Output is correct
22 Correct 2 ms 2132 KB Output is correct
23 Correct 3 ms 2168 KB Output is correct
24 Correct 2 ms 2132 KB Output is correct
25 Correct 2 ms 2168 KB Output is correct
26 Correct 130 ms 2644 KB Output is correct
27 Correct 20 ms 2568 KB Output is correct
28 Correct 135 ms 2652 KB Output is correct
29 Correct 25 ms 2644 KB Output is correct
30 Correct 133 ms 2648 KB Output is correct
31 Correct 22 ms 2564 KB Output is correct
32 Correct 139 ms 2644 KB Output is correct
33 Correct 20 ms 2644 KB Output is correct
34 Correct 13 ms 2644 KB Output is correct
35 Correct 21 ms 2660 KB Output is correct
36 Correct 140 ms 2648 KB Output is correct
37 Correct 22 ms 2644 KB Output is correct
38 Correct 133 ms 2644 KB Output is correct
39 Correct 20 ms 2560 KB Output is correct
40 Correct 128 ms 2644 KB Output is correct
41 Correct 20 ms 2644 KB Output is correct
42 Correct 165 ms 2648 KB Output is correct
43 Correct 28 ms 2644 KB Output is correct
44 Correct 138 ms 2644 KB Output is correct
45 Correct 20 ms 2644 KB Output is correct
46 Correct 135 ms 2644 KB Output is correct
47 Correct 3 ms 2516 KB Output is correct
48 Correct 66 ms 2636 KB Output is correct
49 Correct 65 ms 2772 KB Output is correct
50 Correct 129 ms 2644 KB Output is correct
51 Correct 157 ms 2648 KB Output is correct
52 Correct 351 ms 4564 KB Output is correct
53 Correct 9 ms 4356 KB Output is correct
54 Correct 403 ms 4536 KB Output is correct
55 Correct 10 ms 4308 KB Output is correct
56 Correct 328 ms 4536 KB Output is correct
57 Correct 11 ms 4284 KB Output is correct
58 Correct 388 ms 4536 KB Output is correct
59 Correct 9 ms 4360 KB Output is correct
60 Correct 361 ms 4560 KB Output is correct
61 Correct 10 ms 4288 KB Output is correct
62 Correct 387 ms 4536 KB Output is correct
63 Correct 12 ms 4400 KB Output is correct
64 Correct 355 ms 4556 KB Output is correct
65 Correct 321 ms 4532 KB Output is correct
66 Correct 9 ms 4388 KB Output is correct
67 Correct 328 ms 4552 KB Output is correct
68 Correct 9 ms 4308 KB Output is correct
69 Correct 406 ms 4484 KB Output is correct
70 Correct 17 ms 4336 KB Output is correct
71 Correct 330 ms 4592 KB Output is correct
72 Correct 13 ms 4400 KB Output is correct
73 Correct 224 ms 4536 KB Output is correct
74 Runtime error 4 ms 3924 KB Execution killed with signal 11
75 Halted 0 ms 0 KB -