#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast,inline")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("bmi,bmi2,lzcnt,popcnt")
#pragma GCC target("movbe")
#pragma GCC target("aes,pclmul,rdrnd")
#pragma GCC target("avx,avx2,f16c,fma,sse3,ssse3,sse4.1,sse4.2")
#define sp " "
#define endl "\n";
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define N 60005
const int modulo = 1e9 + 7;
set<int> adj[N];
int l[N], r[N], w[N], done[N];
int32_t main()
{
fastio();
int n, k;
cin>>n>>k;
for (int i = 1; i <= 2 * n; i++)
{
cin>>l[i]>>r[i]>>w[i];
adj[l[i]].insert(i);
adj[r[i] + n].insert(i);
}
int sum = 0;
queue<int> q;
for (int i = 1; i <= 2 * n; i++)
if (adj[i].size() == 1) q.push(i);
int flag = 0;
while(!q.empty())
{
int top = q.front();
q.pop();
done[top] = 1;
if (adj[top].empty())
{
flag = 1;
break;
}
if (top <= n) sum += w[*adj[top].begin()];
else sum -= w[*adj[top].begin()];
for (auto i : adj[top])
{
int to = l[i];
if (to == top) to = r[i] + n;
adj[to].erase(i);
if (adj[to].size() == 1) q.push(to);
}
}
if (flag)
{
cout<<"NO\n";
return 0;
}
int all = abs(sum);
vector<int> v;
int maks = 0;
for (int i = 1; i <= 2 * n; i++)
{
if (done[i]) continue;
if (adj[i].empty())
{
flag = 1;
break;
}
int curr = i, steps = 0, tot = 0;
while(done[curr] == 0 && !adj[curr].empty())
{
done[curr] = 1;
if (adj[curr].size() > 2)
{
flag = 1;
break;
}
int ind = *adj[curr].begin();
if (steps % 2) tot -= w[ind];
else tot += w[ind];
steps++;
int to = l[ind];
if (to == curr) to = r[ind] + n;
adj[to].erase(ind);
adj[curr].erase(ind);
curr = to;
}
v.pb(abs(tot));
all += abs(tot);
maks = max(maks, abs(tot));
}
if (flag)
{
cout<<"NO\n";
return 0;
}
sum = abs(sum);
v.pb(sum);
bitset<600005> a, b;
a.reset(), b.reset();
sort(v.rbegin(), v.rend());
a[0] = 1;
for (int i = 0; i < (int)v.size(); i++)
{
b |= (a<<v[i]);
b |= (a>>v[i]);
for (int j = 0; j <= v[i]; j++)
b[v[i] - j] = b[v[i] - j] | a[j];
a = b;
b.reset();
}
for (int i = 0; i <= k; i++)
if (a[i]) flag = 1;
if (flag) cout<<"YES\n";
else cout<<"NO\n";
cerr << "time taken : " << (float)clock() / CLOCKS_PER_SEC << " seconds\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3412 KB |
Output is correct |
2 |
Correct |
3 ms |
3412 KB |
Output is correct |
3 |
Correct |
2 ms |
3412 KB |
Output is correct |
4 |
Correct |
2 ms |
3412 KB |
Output is correct |
5 |
Correct |
2 ms |
3412 KB |
Output is correct |
6 |
Correct |
2 ms |
3412 KB |
Output is correct |
7 |
Correct |
3 ms |
3412 KB |
Output is correct |
8 |
Correct |
3 ms |
3412 KB |
Output is correct |
9 |
Correct |
2 ms |
3412 KB |
Output is correct |
10 |
Correct |
2 ms |
3412 KB |
Output is correct |
11 |
Correct |
2 ms |
3412 KB |
Output is correct |
12 |
Correct |
2 ms |
3412 KB |
Output is correct |
13 |
Correct |
2 ms |
3412 KB |
Output is correct |
14 |
Correct |
2 ms |
3412 KB |
Output is correct |
15 |
Correct |
2 ms |
3412 KB |
Output is correct |
16 |
Correct |
2 ms |
3412 KB |
Output is correct |
17 |
Correct |
2 ms |
3412 KB |
Output is correct |
18 |
Correct |
2 ms |
3412 KB |
Output is correct |
19 |
Correct |
2 ms |
3412 KB |
Output is correct |
20 |
Correct |
2 ms |
3412 KB |
Output is correct |
21 |
Correct |
2 ms |
3412 KB |
Output is correct |
22 |
Correct |
2 ms |
3412 KB |
Output is correct |
23 |
Correct |
2 ms |
3412 KB |
Output is correct |
24 |
Correct |
2 ms |
3412 KB |
Output is correct |
25 |
Correct |
2 ms |
3412 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3412 KB |
Output is correct |
2 |
Correct |
3 ms |
3412 KB |
Output is correct |
3 |
Correct |
2 ms |
3412 KB |
Output is correct |
4 |
Correct |
2 ms |
3412 KB |
Output is correct |
5 |
Correct |
2 ms |
3412 KB |
Output is correct |
6 |
Correct |
2 ms |
3412 KB |
Output is correct |
7 |
Correct |
3 ms |
3412 KB |
Output is correct |
8 |
Correct |
3 ms |
3412 KB |
Output is correct |
9 |
Correct |
2 ms |
3412 KB |
Output is correct |
10 |
Correct |
2 ms |
3412 KB |
Output is correct |
11 |
Correct |
2 ms |
3412 KB |
Output is correct |
12 |
Correct |
2 ms |
3412 KB |
Output is correct |
13 |
Correct |
2 ms |
3412 KB |
Output is correct |
14 |
Correct |
2 ms |
3412 KB |
Output is correct |
15 |
Correct |
2 ms |
3412 KB |
Output is correct |
16 |
Correct |
2 ms |
3412 KB |
Output is correct |
17 |
Correct |
2 ms |
3412 KB |
Output is correct |
18 |
Correct |
2 ms |
3412 KB |
Output is correct |
19 |
Correct |
2 ms |
3412 KB |
Output is correct |
20 |
Correct |
2 ms |
3412 KB |
Output is correct |
21 |
Correct |
2 ms |
3412 KB |
Output is correct |
22 |
Correct |
2 ms |
3412 KB |
Output is correct |
23 |
Correct |
2 ms |
3412 KB |
Output is correct |
24 |
Correct |
2 ms |
3412 KB |
Output is correct |
25 |
Correct |
2 ms |
3412 KB |
Output is correct |
26 |
Correct |
58 ms |
3884 KB |
Output is correct |
27 |
Correct |
11 ms |
3868 KB |
Output is correct |
28 |
Correct |
64 ms |
3892 KB |
Output is correct |
29 |
Correct |
15 ms |
3888 KB |
Output is correct |
30 |
Correct |
65 ms |
3888 KB |
Output is correct |
31 |
Correct |
14 ms |
3884 KB |
Output is correct |
32 |
Correct |
58 ms |
3892 KB |
Output is correct |
33 |
Correct |
17 ms |
3796 KB |
Output is correct |
34 |
Correct |
8 ms |
3884 KB |
Output is correct |
35 |
Correct |
12 ms |
3892 KB |
Output is correct |
36 |
Correct |
61 ms |
3888 KB |
Output is correct |
37 |
Correct |
12 ms |
3896 KB |
Output is correct |
38 |
Correct |
64 ms |
3904 KB |
Output is correct |
39 |
Correct |
11 ms |
3888 KB |
Output is correct |
40 |
Correct |
62 ms |
3896 KB |
Output is correct |
41 |
Correct |
12 ms |
3892 KB |
Output is correct |
42 |
Correct |
59 ms |
3888 KB |
Output is correct |
43 |
Correct |
11 ms |
3796 KB |
Output is correct |
44 |
Correct |
61 ms |
3888 KB |
Output is correct |
45 |
Correct |
15 ms |
3796 KB |
Output is correct |
46 |
Correct |
61 ms |
3796 KB |
Output is correct |
47 |
Correct |
4 ms |
3796 KB |
Output is correct |
48 |
Correct |
31 ms |
3796 KB |
Output is correct |
49 |
Correct |
32 ms |
3888 KB |
Output is correct |
50 |
Correct |
66 ms |
3888 KB |
Output is correct |
51 |
Correct |
59 ms |
3884 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
197 ms |
5636 KB |
Output is correct |
2 |
Correct |
10 ms |
5588 KB |
Output is correct |
3 |
Correct |
186 ms |
5732 KB |
Output is correct |
4 |
Correct |
12 ms |
5588 KB |
Output is correct |
5 |
Correct |
209 ms |
5732 KB |
Output is correct |
6 |
Correct |
10 ms |
5508 KB |
Output is correct |
7 |
Correct |
173 ms |
5732 KB |
Output is correct |
8 |
Correct |
10 ms |
5588 KB |
Output is correct |
9 |
Correct |
188 ms |
5728 KB |
Output is correct |
10 |
Correct |
10 ms |
5588 KB |
Output is correct |
11 |
Correct |
175 ms |
5716 KB |
Output is correct |
12 |
Correct |
10 ms |
5588 KB |
Output is correct |
13 |
Correct |
181 ms |
5724 KB |
Output is correct |
14 |
Correct |
186 ms |
5736 KB |
Output is correct |
15 |
Correct |
10 ms |
5588 KB |
Output is correct |
16 |
Correct |
179 ms |
5728 KB |
Output is correct |
17 |
Correct |
10 ms |
5624 KB |
Output is correct |
18 |
Correct |
217 ms |
5736 KB |
Output is correct |
19 |
Correct |
10 ms |
5588 KB |
Output is correct |
20 |
Correct |
178 ms |
5736 KB |
Output is correct |
21 |
Correct |
10 ms |
5624 KB |
Output is correct |
22 |
Correct |
98 ms |
5708 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3412 KB |
Output is correct |
2 |
Correct |
3 ms |
3412 KB |
Output is correct |
3 |
Correct |
2 ms |
3412 KB |
Output is correct |
4 |
Correct |
2 ms |
3412 KB |
Output is correct |
5 |
Correct |
2 ms |
3412 KB |
Output is correct |
6 |
Correct |
2 ms |
3412 KB |
Output is correct |
7 |
Correct |
3 ms |
3412 KB |
Output is correct |
8 |
Correct |
3 ms |
3412 KB |
Output is correct |
9 |
Correct |
2 ms |
3412 KB |
Output is correct |
10 |
Correct |
2 ms |
3412 KB |
Output is correct |
11 |
Correct |
2 ms |
3412 KB |
Output is correct |
12 |
Correct |
2 ms |
3412 KB |
Output is correct |
13 |
Correct |
2 ms |
3412 KB |
Output is correct |
14 |
Correct |
2 ms |
3412 KB |
Output is correct |
15 |
Correct |
2 ms |
3412 KB |
Output is correct |
16 |
Correct |
2 ms |
3412 KB |
Output is correct |
17 |
Correct |
2 ms |
3412 KB |
Output is correct |
18 |
Correct |
2 ms |
3412 KB |
Output is correct |
19 |
Correct |
2 ms |
3412 KB |
Output is correct |
20 |
Correct |
2 ms |
3412 KB |
Output is correct |
21 |
Correct |
2 ms |
3412 KB |
Output is correct |
22 |
Correct |
2 ms |
3412 KB |
Output is correct |
23 |
Correct |
2 ms |
3412 KB |
Output is correct |
24 |
Correct |
2 ms |
3412 KB |
Output is correct |
25 |
Correct |
2 ms |
3412 KB |
Output is correct |
26 |
Correct |
58 ms |
3884 KB |
Output is correct |
27 |
Correct |
11 ms |
3868 KB |
Output is correct |
28 |
Correct |
64 ms |
3892 KB |
Output is correct |
29 |
Correct |
15 ms |
3888 KB |
Output is correct |
30 |
Correct |
65 ms |
3888 KB |
Output is correct |
31 |
Correct |
14 ms |
3884 KB |
Output is correct |
32 |
Correct |
58 ms |
3892 KB |
Output is correct |
33 |
Correct |
17 ms |
3796 KB |
Output is correct |
34 |
Correct |
8 ms |
3884 KB |
Output is correct |
35 |
Correct |
12 ms |
3892 KB |
Output is correct |
36 |
Correct |
61 ms |
3888 KB |
Output is correct |
37 |
Correct |
12 ms |
3896 KB |
Output is correct |
38 |
Correct |
64 ms |
3904 KB |
Output is correct |
39 |
Correct |
11 ms |
3888 KB |
Output is correct |
40 |
Correct |
62 ms |
3896 KB |
Output is correct |
41 |
Correct |
12 ms |
3892 KB |
Output is correct |
42 |
Correct |
59 ms |
3888 KB |
Output is correct |
43 |
Correct |
11 ms |
3796 KB |
Output is correct |
44 |
Correct |
61 ms |
3888 KB |
Output is correct |
45 |
Correct |
15 ms |
3796 KB |
Output is correct |
46 |
Correct |
61 ms |
3796 KB |
Output is correct |
47 |
Correct |
4 ms |
3796 KB |
Output is correct |
48 |
Correct |
31 ms |
3796 KB |
Output is correct |
49 |
Correct |
32 ms |
3888 KB |
Output is correct |
50 |
Correct |
66 ms |
3888 KB |
Output is correct |
51 |
Correct |
59 ms |
3884 KB |
Output is correct |
52 |
Correct |
197 ms |
5636 KB |
Output is correct |
53 |
Correct |
10 ms |
5588 KB |
Output is correct |
54 |
Correct |
186 ms |
5732 KB |
Output is correct |
55 |
Correct |
12 ms |
5588 KB |
Output is correct |
56 |
Correct |
209 ms |
5732 KB |
Output is correct |
57 |
Correct |
10 ms |
5508 KB |
Output is correct |
58 |
Correct |
173 ms |
5732 KB |
Output is correct |
59 |
Correct |
10 ms |
5588 KB |
Output is correct |
60 |
Correct |
188 ms |
5728 KB |
Output is correct |
61 |
Correct |
10 ms |
5588 KB |
Output is correct |
62 |
Correct |
175 ms |
5716 KB |
Output is correct |
63 |
Correct |
10 ms |
5588 KB |
Output is correct |
64 |
Correct |
181 ms |
5724 KB |
Output is correct |
65 |
Correct |
186 ms |
5736 KB |
Output is correct |
66 |
Correct |
10 ms |
5588 KB |
Output is correct |
67 |
Correct |
179 ms |
5728 KB |
Output is correct |
68 |
Correct |
10 ms |
5624 KB |
Output is correct |
69 |
Correct |
217 ms |
5736 KB |
Output is correct |
70 |
Correct |
10 ms |
5588 KB |
Output is correct |
71 |
Correct |
178 ms |
5736 KB |
Output is correct |
72 |
Correct |
10 ms |
5624 KB |
Output is correct |
73 |
Correct |
98 ms |
5708 KB |
Output is correct |
74 |
Correct |
908 ms |
10252 KB |
Output is correct |
75 |
Correct |
80 ms |
9956 KB |
Output is correct |
76 |
Correct |
859 ms |
10276 KB |
Output is correct |
77 |
Correct |
82 ms |
9996 KB |
Output is correct |
78 |
Correct |
861 ms |
10252 KB |
Output is correct |
79 |
Correct |
874 ms |
10304 KB |
Output is correct |
80 |
Correct |
81 ms |
10116 KB |
Output is correct |
81 |
Correct |
84 ms |
9968 KB |
Output is correct |
82 |
Correct |
885 ms |
9988 KB |
Output is correct |
83 |
Correct |
913 ms |
10248 KB |
Output is correct |
84 |
Correct |
78 ms |
9996 KB |
Output is correct |
85 |
Correct |
849 ms |
10252 KB |
Output is correct |
86 |
Correct |
90 ms |
9900 KB |
Output is correct |
87 |
Correct |
831 ms |
10248 KB |
Output is correct |
88 |
Correct |
75 ms |
9932 KB |
Output is correct |
89 |
Correct |
856 ms |
10244 KB |
Output is correct |
90 |
Correct |
80 ms |
9904 KB |
Output is correct |
91 |
Correct |
849 ms |
10248 KB |
Output is correct |
92 |
Correct |
94 ms |
10064 KB |
Output is correct |
93 |
Correct |
868 ms |
10244 KB |
Output is correct |
94 |
Correct |
42 ms |
9944 KB |
Output is correct |
95 |
Correct |
466 ms |
10256 KB |
Output is correct |
96 |
Correct |
463 ms |
10064 KB |
Output is correct |
97 |
Correct |
856 ms |
10244 KB |
Output is correct |
98 |
Correct |
892 ms |
10248 KB |
Output is correct |