#include <bits/stdc++.h>
#define ll long long
using namespace std;
struct node_t {
int ord, low, ss, par;
vector<int> adj, childs;
unordered_set<int> used;
};
vector<node_t> nodes;
vector<int> thing, ord2id, ans;
int lo, t = 0, n, remain;
bool good = true;
pair<int, int> found = {-1, -1};
void dfs(int cur, int par) {
if (not good) return;
node_t& u = nodes[cur];
u.par = par;
t++;
u.ord = u.low = t;
u.ss = 1;
ord2id[t] = cur;
for (int v : u.adj) {
if (not nodes[v].ord) {
dfs(v, cur);
u.low = min(u.low, nodes[v].low);
u.used.insert(v);
nodes[v].used.insert(cur);
u.ss += nodes[v].ss;
u.childs.push_back(v);
} else if (v != par) {
u.low = min(u.low, nodes[v].ord);
}
}
}
void findSplit(int cur, int par) {
node_t& u = nodes[cur];
int mcss = 0;
for (int v : u.childs) {
if (v == par) continue;
findSplit(v, cur);
mcss = max(mcss, nodes[v].ss);
}
if (found.first != -1) return;
if (mcss < lo and u.ss >= lo) {
if (par == -1) {
good = false;
return;
}
if (u.ss <= n - lo) {
u.used.erase(par);
nodes[par].used.erase(cur);
found = make_pair(cur, par);
return;
}
int curss = u.ss;
for (int v : u.adj) {
if (v == par) continue;
if (nodes[v].low < u.ord) {
curss -= nodes[v].ss;
u.used.erase(v);
nodes[v].used.erase(cur);
nodes[ord2id[nodes[v].low]].used.insert(v);
nodes[v].used.insert(ord2id[nodes[v].low]);
if (curss <= n - lo) {
u.used.erase(par);
nodes[par].used.erase(cur);
found = make_pair(cur, par);
return;
}
}
}
good = false;
}
}
bool construct(int cur, int group, int par) {
if (remain == 0) return true;
ans[cur] = group;
remain--;
bool res = false;
for (int v : nodes[cur].used) {
if (v == par) continue;
res = res or construct(v, group, cur);
}
return res;
}
vector<int> find_split(int N, int a, int b, int c, vector<int> p, vector<int> q) {
int i;
n = N;
nodes.resize(n);
ord2id.resize(n + 1);
lo = min(min(a, b), c);
vector<pair<int, int>> thing = {{a, 1}, {b, 2}, {c, 3}};
sort(thing.begin(), thing.end());
for (i = 0; i < q.size(); i++) {
nodes[p[i]].adj.push_back(q[i]);
nodes[q[i]].adj.push_back(p[i]);
}
dfs(0, -1);
findSplit(0, -1);
ans.resize(n);
if (not good) return ans;
remain = thing[1].first;
bool ok = construct(found.first, thing[1].second, -1);
if (not ok) {
remain = thing[1].first;
construct(found.first, 0, -1);
remain = thing[0].first;
construct(found.first, thing[0].second, -1);
remain = thing[1].first;
construct(found.second, thing[1].second, -1);
} else {
remain = thing[0].first;
construct(found.second, thing[0].second, -1);
}
for (i = 0; i < n; i++) {
if (ans[i] == 0) ans[i] = thing[2].second;
}
return ans;
}
Compilation message
split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:100:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
100 | for (i = 0; i < q.size(); i++) {
| ~~^~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
ok, correct split |
2 |
Correct |
0 ms |
348 KB |
ok, correct split |
3 |
Correct |
0 ms |
348 KB |
ok, correct split |
4 |
Correct |
0 ms |
348 KB |
ok, correct split |
5 |
Correct |
0 ms |
348 KB |
ok, correct split |
6 |
Correct |
0 ms |
348 KB |
ok, correct split |
7 |
Correct |
164 ms |
50248 KB |
ok, correct split |
8 |
Correct |
134 ms |
46564 KB |
ok, correct split |
9 |
Correct |
137 ms |
45352 KB |
ok, correct split |
10 |
Correct |
145 ms |
51120 KB |
ok, correct split |
11 |
Correct |
148 ms |
50888 KB |
ok, correct split |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
ok, correct split |
2 |
Correct |
1 ms |
348 KB |
ok, correct split |
3 |
Correct |
0 ms |
348 KB |
ok, correct split |
4 |
Correct |
140 ms |
44112 KB |
ok, correct split |
5 |
Correct |
115 ms |
36944 KB |
ok, correct split |
6 |
Correct |
130 ms |
50720 KB |
ok, correct split |
7 |
Correct |
143 ms |
46160 KB |
ok, correct split |
8 |
Correct |
153 ms |
39504 KB |
ok, correct split |
9 |
Correct |
123 ms |
38484 KB |
ok, correct split |
10 |
Correct |
116 ms |
37380 KB |
ok, correct split |
11 |
Correct |
107 ms |
37168 KB |
ok, correct split |
12 |
Correct |
111 ms |
37204 KB |
ok, correct split |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
ok, correct split |
2 |
Correct |
121 ms |
36888 KB |
ok, correct split |
3 |
Correct |
43 ms |
15268 KB |
ok, correct split |
4 |
Correct |
1 ms |
344 KB |
ok, correct split |
5 |
Correct |
137 ms |
42576 KB |
ok, correct split |
6 |
Correct |
138 ms |
42024 KB |
ok, correct split |
7 |
Correct |
137 ms |
41928 KB |
ok, correct split |
8 |
Correct |
135 ms |
43860 KB |
ok, correct split |
9 |
Correct |
129 ms |
41584 KB |
ok, correct split |
10 |
Correct |
28 ms |
12636 KB |
ok, no valid answer |
11 |
Correct |
45 ms |
18524 KB |
ok, no valid answer |
12 |
Correct |
110 ms |
37088 KB |
ok, no valid answer |
13 |
Correct |
133 ms |
36948 KB |
ok, no valid answer |
14 |
Correct |
100 ms |
37344 KB |
ok, no valid answer |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
596 KB |
ok, correct split |
2 |
Correct |
0 ms |
348 KB |
ok, no valid answer |
3 |
Correct |
0 ms |
348 KB |
ok, correct split |
4 |
Correct |
0 ms |
348 KB |
ok, correct split |
5 |
Correct |
0 ms |
348 KB |
ok, correct split |
6 |
Correct |
0 ms |
348 KB |
ok, correct split |
7 |
Correct |
0 ms |
344 KB |
ok, correct split |
8 |
Correct |
0 ms |
344 KB |
ok, correct split |
9 |
Correct |
2 ms |
1372 KB |
ok, correct split |
10 |
Correct |
3 ms |
1372 KB |
ok, correct split |
11 |
Correct |
0 ms |
348 KB |
ok, correct split |
12 |
Correct |
3 ms |
1416 KB |
ok, correct split |
13 |
Correct |
1 ms |
348 KB |
ok, correct split |
14 |
Correct |
1 ms |
348 KB |
ok, correct split |
15 |
Correct |
0 ms |
348 KB |
ok, correct split |
16 |
Correct |
1 ms |
348 KB |
ok, correct split |
17 |
Correct |
0 ms |
348 KB |
ok, correct split |
18 |
Correct |
0 ms |
348 KB |
ok, correct split |
19 |
Correct |
1 ms |
604 KB |
ok, correct split |
20 |
Correct |
1 ms |
600 KB |
ok, correct split |
21 |
Correct |
2 ms |
1372 KB |
ok, correct split |
22 |
Correct |
2 ms |
1372 KB |
ok, correct split |
23 |
Correct |
2 ms |
1372 KB |
ok, correct split |
24 |
Correct |
2 ms |
1368 KB |
ok, correct split |
25 |
Correct |
2 ms |
1372 KB |
ok, correct split |
26 |
Correct |
3 ms |
1372 KB |
ok, correct split |
27 |
Correct |
2 ms |
1624 KB |
ok, correct split |
28 |
Correct |
3 ms |
1164 KB |
ok, correct split |
29 |
Correct |
1 ms |
600 KB |
ok, correct split |
30 |
Correct |
3 ms |
1624 KB |
ok, correct split |
31 |
Correct |
1 ms |
348 KB |
ok, correct split |
32 |
Correct |
1 ms |
348 KB |
ok, correct split |
33 |
Correct |
1 ms |
348 KB |
ok, correct split |
34 |
Correct |
2 ms |
1116 KB |
ok, correct split |
35 |
Correct |
2 ms |
1116 KB |
ok, correct split |
36 |
Correct |
2 ms |
1116 KB |
ok, correct split |
37 |
Correct |
3 ms |
1372 KB |
ok, correct split |
38 |
Correct |
3 ms |
1372 KB |
ok, correct split |
39 |
Correct |
3 ms |
1372 KB |
ok, correct split |
40 |
Correct |
3 ms |
1372 KB |
ok, correct split |
41 |
Correct |
2 ms |
860 KB |
ok, correct split |
42 |
Correct |
1 ms |
860 KB |
ok, correct split |
43 |
Correct |
3 ms |
1372 KB |
ok, correct split |
44 |
Correct |
3 ms |
1368 KB |
ok, correct split |
45 |
Correct |
3 ms |
1372 KB |
ok, correct split |
46 |
Correct |
2 ms |
1372 KB |
ok, correct split |
47 |
Correct |
2 ms |
1228 KB |
ok, no valid answer |
48 |
Correct |
2 ms |
1372 KB |
ok, correct split |
49 |
Correct |
2 ms |
1476 KB |
ok, correct split |
50 |
Correct |
0 ms |
348 KB |
ok, no valid answer |
51 |
Correct |
0 ms |
348 KB |
ok, no valid answer |
52 |
Correct |
2 ms |
1372 KB |
ok, no valid answer |
53 |
Correct |
3 ms |
1372 KB |
ok, no valid answer |
54 |
Correct |
2 ms |
1372 KB |
ok, no valid answer |
55 |
Incorrect |
3 ms |
1372 KB |
invalid split: #1=2, #2=833, #3=1664 |
56 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
ok, correct split |
2 |
Correct |
0 ms |
348 KB |
ok, correct split |
3 |
Correct |
0 ms |
348 KB |
ok, correct split |
4 |
Correct |
0 ms |
348 KB |
ok, correct split |
5 |
Correct |
0 ms |
348 KB |
ok, correct split |
6 |
Correct |
0 ms |
348 KB |
ok, correct split |
7 |
Correct |
164 ms |
50248 KB |
ok, correct split |
8 |
Correct |
134 ms |
46564 KB |
ok, correct split |
9 |
Correct |
137 ms |
45352 KB |
ok, correct split |
10 |
Correct |
145 ms |
51120 KB |
ok, correct split |
11 |
Correct |
148 ms |
50888 KB |
ok, correct split |
12 |
Correct |
0 ms |
344 KB |
ok, correct split |
13 |
Correct |
1 ms |
348 KB |
ok, correct split |
14 |
Correct |
0 ms |
348 KB |
ok, correct split |
15 |
Correct |
140 ms |
44112 KB |
ok, correct split |
16 |
Correct |
115 ms |
36944 KB |
ok, correct split |
17 |
Correct |
130 ms |
50720 KB |
ok, correct split |
18 |
Correct |
143 ms |
46160 KB |
ok, correct split |
19 |
Correct |
153 ms |
39504 KB |
ok, correct split |
20 |
Correct |
123 ms |
38484 KB |
ok, correct split |
21 |
Correct |
116 ms |
37380 KB |
ok, correct split |
22 |
Correct |
107 ms |
37168 KB |
ok, correct split |
23 |
Correct |
111 ms |
37204 KB |
ok, correct split |
24 |
Correct |
0 ms |
348 KB |
ok, correct split |
25 |
Correct |
121 ms |
36888 KB |
ok, correct split |
26 |
Correct |
43 ms |
15268 KB |
ok, correct split |
27 |
Correct |
1 ms |
344 KB |
ok, correct split |
28 |
Correct |
137 ms |
42576 KB |
ok, correct split |
29 |
Correct |
138 ms |
42024 KB |
ok, correct split |
30 |
Correct |
137 ms |
41928 KB |
ok, correct split |
31 |
Correct |
135 ms |
43860 KB |
ok, correct split |
32 |
Correct |
129 ms |
41584 KB |
ok, correct split |
33 |
Correct |
28 ms |
12636 KB |
ok, no valid answer |
34 |
Correct |
45 ms |
18524 KB |
ok, no valid answer |
35 |
Correct |
110 ms |
37088 KB |
ok, no valid answer |
36 |
Correct |
133 ms |
36948 KB |
ok, no valid answer |
37 |
Correct |
100 ms |
37344 KB |
ok, no valid answer |
38 |
Correct |
0 ms |
596 KB |
ok, correct split |
39 |
Correct |
0 ms |
348 KB |
ok, no valid answer |
40 |
Correct |
0 ms |
348 KB |
ok, correct split |
41 |
Correct |
0 ms |
348 KB |
ok, correct split |
42 |
Correct |
0 ms |
348 KB |
ok, correct split |
43 |
Correct |
0 ms |
348 KB |
ok, correct split |
44 |
Correct |
0 ms |
344 KB |
ok, correct split |
45 |
Correct |
0 ms |
344 KB |
ok, correct split |
46 |
Correct |
2 ms |
1372 KB |
ok, correct split |
47 |
Correct |
3 ms |
1372 KB |
ok, correct split |
48 |
Correct |
0 ms |
348 KB |
ok, correct split |
49 |
Correct |
3 ms |
1416 KB |
ok, correct split |
50 |
Correct |
1 ms |
348 KB |
ok, correct split |
51 |
Correct |
1 ms |
348 KB |
ok, correct split |
52 |
Correct |
0 ms |
348 KB |
ok, correct split |
53 |
Correct |
1 ms |
348 KB |
ok, correct split |
54 |
Correct |
0 ms |
348 KB |
ok, correct split |
55 |
Correct |
0 ms |
348 KB |
ok, correct split |
56 |
Correct |
1 ms |
604 KB |
ok, correct split |
57 |
Correct |
1 ms |
600 KB |
ok, correct split |
58 |
Correct |
2 ms |
1372 KB |
ok, correct split |
59 |
Correct |
2 ms |
1372 KB |
ok, correct split |
60 |
Correct |
2 ms |
1372 KB |
ok, correct split |
61 |
Correct |
2 ms |
1368 KB |
ok, correct split |
62 |
Correct |
2 ms |
1372 KB |
ok, correct split |
63 |
Correct |
3 ms |
1372 KB |
ok, correct split |
64 |
Correct |
2 ms |
1624 KB |
ok, correct split |
65 |
Correct |
3 ms |
1164 KB |
ok, correct split |
66 |
Correct |
1 ms |
600 KB |
ok, correct split |
67 |
Correct |
3 ms |
1624 KB |
ok, correct split |
68 |
Correct |
1 ms |
348 KB |
ok, correct split |
69 |
Correct |
1 ms |
348 KB |
ok, correct split |
70 |
Correct |
1 ms |
348 KB |
ok, correct split |
71 |
Correct |
2 ms |
1116 KB |
ok, correct split |
72 |
Correct |
2 ms |
1116 KB |
ok, correct split |
73 |
Correct |
2 ms |
1116 KB |
ok, correct split |
74 |
Correct |
3 ms |
1372 KB |
ok, correct split |
75 |
Correct |
3 ms |
1372 KB |
ok, correct split |
76 |
Correct |
3 ms |
1372 KB |
ok, correct split |
77 |
Correct |
3 ms |
1372 KB |
ok, correct split |
78 |
Correct |
2 ms |
860 KB |
ok, correct split |
79 |
Correct |
1 ms |
860 KB |
ok, correct split |
80 |
Correct |
3 ms |
1372 KB |
ok, correct split |
81 |
Correct |
3 ms |
1368 KB |
ok, correct split |
82 |
Correct |
3 ms |
1372 KB |
ok, correct split |
83 |
Correct |
2 ms |
1372 KB |
ok, correct split |
84 |
Correct |
2 ms |
1228 KB |
ok, no valid answer |
85 |
Correct |
2 ms |
1372 KB |
ok, correct split |
86 |
Correct |
2 ms |
1476 KB |
ok, correct split |
87 |
Correct |
0 ms |
348 KB |
ok, no valid answer |
88 |
Correct |
0 ms |
348 KB |
ok, no valid answer |
89 |
Correct |
2 ms |
1372 KB |
ok, no valid answer |
90 |
Correct |
3 ms |
1372 KB |
ok, no valid answer |
91 |
Correct |
2 ms |
1372 KB |
ok, no valid answer |
92 |
Incorrect |
3 ms |
1372 KB |
invalid split: #1=2, #2=833, #3=1664 |
93 |
Halted |
0 ms |
0 KB |
- |