#include "split.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
const int mxN = 1e5, INF = 1e9;
vector<int> adj[mxN], t[mxN], cg[mxN], ans;
int n, seen1[mxN], bst_mx=INF, bst_u, bst_v, dsu[mxN], sz[mxN];
int f(int x) {return dsu[x] != x ? dsu[x] = f(dsu[x]) : x;}
int dfs1(int u, int p) {
seen1[u] = 1;
int sm = 1, mx = 0, bv = 0;
for (int v: adj[u]) {
if (!seen1[v]) {
t[u].push_back(v);
t[v].push_back(u);
int res = dfs1(v, u);
sm += res;
if (res > mx) {
bv = v;
mx = res;
}
}
}
int res = n-sm;
if (res > mx) {
bv = p;
mx = res;
}
if (mx < bst_mx) {
bst_mx = mx;
bst_u = u;
bst_v = bv;
}
return sm;
}
void dfs2(int u, pii &cc, vector<int>* g) {
if (cc.first) {
cc.first--;
ans[u] = cc.second;
} else return;
for (int v: g[u]) if (!ans[v]) {
dfs2(v, cc, g);
}
}
void merge(int a, int b) {
cg[a].push_back(b);
cg[b].push_back(a);
a = f(a), b = f(b);
if (a != b) {
if (sz[b] > sz[a]) swap(a,b);
dsu[b] = a;
sz[a] += sz[b];
}
}
vector<int> find_split(int _n, int a, int b, int c, vector<int> p, vector<int> q) {
n = _n;
pii ccs[3] = {{a,1},{b,2},{c,3}};
sort(ccs, ccs+3);
ans.resize(n);
for (int i = 0; i < p.size(); ++i) {
adj[p[i]].push_back(q[i]);
adj[q[i]].push_back(p[i]);
}
dfs1(0,0);
if (bst_mx >= ccs[0].first) {
ans[bst_u] = ccs[1].second;
dfs2(bst_v, ccs[0], t);
dfs2(bst_u, ccs[1], t);
} else {
bool valid = 0;
iota(dsu, dsu+n, 0);
fill(sz, sz+n, 1);
for (int u = 0; u < n; ++u) for (int v: t[u]) {
if (u != bst_u && v != bst_u) merge(u, v);
}
for (int u = 0; u < n && !valid; ++u) for (int v: adj[u]) {
if (u != bst_u && v != bst_u) merge(u, v);
if (sz[f(u)] >= ccs[0].first) {
valid = 1;
dfs2(u, ccs[0], cg);
dfs2(bst_u, ccs[1], t);
break;
}
}
if (!valid) return ans;
}
for (int i = 0; i < n; ++i) if (!ans[i]) ans[i] = ccs[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:65:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
65 | for (int i = 0; i < p.size(); ++i) {
| ~~^~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
7244 KB |
ok, correct split |
2 |
Correct |
4 ms |
7344 KB |
ok, correct split |
3 |
Correct |
5 ms |
7244 KB |
ok, correct split |
4 |
Correct |
4 ms |
7352 KB |
ok, correct split |
5 |
Correct |
5 ms |
7244 KB |
ok, correct split |
6 |
Correct |
4 ms |
7244 KB |
ok, correct split |
7 |
Correct |
107 ms |
26308 KB |
ok, correct split |
8 |
Correct |
106 ms |
23628 KB |
ok, correct split |
9 |
Correct |
127 ms |
22832 KB |
ok, correct split |
10 |
Correct |
98 ms |
26816 KB |
ok, correct split |
11 |
Correct |
109 ms |
26776 KB |
ok, correct split |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
7244 KB |
ok, correct split |
2 |
Correct |
4 ms |
7344 KB |
ok, correct split |
3 |
Correct |
4 ms |
7244 KB |
ok, correct split |
4 |
Correct |
116 ms |
23352 KB |
ok, correct split |
5 |
Correct |
99 ms |
17704 KB |
ok, correct split |
6 |
Correct |
113 ms |
26932 KB |
ok, correct split |
7 |
Correct |
100 ms |
23364 KB |
ok, correct split |
8 |
Correct |
130 ms |
20488 KB |
ok, correct split |
9 |
Correct |
100 ms |
17548 KB |
ok, correct split |
10 |
Correct |
74 ms |
17836 KB |
ok, correct split |
11 |
Correct |
66 ms |
17832 KB |
ok, correct split |
12 |
Correct |
71 ms |
18168 KB |
ok, correct split |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
7244 KB |
ok, correct split |
2 |
Correct |
89 ms |
17716 KB |
ok, correct split |
3 |
Correct |
33 ms |
11468 KB |
ok, correct split |
4 |
Correct |
6 ms |
7244 KB |
ok, correct split |
5 |
Correct |
102 ms |
20536 KB |
ok, correct split |
6 |
Correct |
97 ms |
20276 KB |
ok, correct split |
7 |
Correct |
100 ms |
20020 KB |
ok, correct split |
8 |
Correct |
103 ms |
21700 KB |
ok, correct split |
9 |
Correct |
96 ms |
19892 KB |
ok, correct split |
10 |
Correct |
48 ms |
12992 KB |
ok, no valid answer |
11 |
Correct |
76 ms |
15684 KB |
ok, no valid answer |
12 |
Correct |
118 ms |
21156 KB |
ok, no valid answer |
13 |
Correct |
163 ms |
23740 KB |
ok, no valid answer |
14 |
Correct |
75 ms |
19064 KB |
ok, no valid answer |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
7244 KB |
ok, correct split |
2 |
Correct |
4 ms |
7244 KB |
ok, no valid answer |
3 |
Correct |
4 ms |
7244 KB |
ok, correct split |
4 |
Correct |
5 ms |
7244 KB |
ok, correct split |
5 |
Correct |
5 ms |
7244 KB |
ok, correct split |
6 |
Correct |
4 ms |
7348 KB |
ok, correct split |
7 |
Correct |
4 ms |
7244 KB |
ok, correct split |
8 |
Correct |
4 ms |
7244 KB |
ok, correct split |
9 |
Correct |
7 ms |
7628 KB |
ok, correct split |
10 |
Correct |
6 ms |
7628 KB |
ok, correct split |
11 |
Correct |
4 ms |
7372 KB |
ok, correct split |
12 |
Correct |
6 ms |
7612 KB |
ok, correct split |
13 |
Correct |
4 ms |
7340 KB |
ok, correct split |
14 |
Correct |
4 ms |
7244 KB |
ok, correct split |
15 |
Correct |
4 ms |
7244 KB |
ok, correct split |
16 |
Correct |
6 ms |
7324 KB |
ok, correct split |
17 |
Correct |
5 ms |
7324 KB |
ok, correct split |
18 |
Correct |
4 ms |
7244 KB |
ok, correct split |
19 |
Correct |
5 ms |
7372 KB |
ok, correct split |
20 |
Correct |
5 ms |
7372 KB |
ok, correct split |
21 |
Correct |
6 ms |
7636 KB |
ok, correct split |
22 |
Correct |
6 ms |
7628 KB |
ok, correct split |
23 |
Correct |
6 ms |
7628 KB |
ok, correct split |
24 |
Correct |
6 ms |
7628 KB |
ok, correct split |
25 |
Correct |
6 ms |
7628 KB |
ok, correct split |
26 |
Correct |
6 ms |
7628 KB |
ok, correct split |
27 |
Correct |
6 ms |
7628 KB |
ok, correct split |
28 |
Correct |
7 ms |
7628 KB |
ok, correct split |
29 |
Correct |
5 ms |
7348 KB |
ok, correct split |
30 |
Correct |
6 ms |
7628 KB |
ok, correct split |
31 |
Correct |
5 ms |
7372 KB |
ok, correct split |
32 |
Correct |
5 ms |
7372 KB |
ok, correct split |
33 |
Correct |
5 ms |
7344 KB |
ok, correct split |
34 |
Correct |
7 ms |
7740 KB |
ok, correct split |
35 |
Correct |
7 ms |
7628 KB |
ok, correct split |
36 |
Correct |
7 ms |
7628 KB |
ok, correct split |
37 |
Correct |
7 ms |
7756 KB |
ok, correct split |
38 |
Correct |
7 ms |
7736 KB |
ok, correct split |
39 |
Correct |
7 ms |
7752 KB |
ok, correct split |
40 |
Correct |
6 ms |
7628 KB |
ok, correct split |
41 |
Correct |
5 ms |
7500 KB |
ok, correct split |
42 |
Correct |
5 ms |
7500 KB |
ok, correct split |
43 |
Correct |
7 ms |
7740 KB |
ok, correct split |
44 |
Correct |
7 ms |
7628 KB |
ok, correct split |
45 |
Correct |
7 ms |
7740 KB |
ok, correct split |
46 |
Correct |
8 ms |
7608 KB |
ok, correct split |
47 |
Correct |
7 ms |
7756 KB |
ok, no valid answer |
48 |
Correct |
6 ms |
7480 KB |
ok, correct split |
49 |
Correct |
6 ms |
7612 KB |
ok, correct split |
50 |
Correct |
4 ms |
7288 KB |
ok, no valid answer |
51 |
Correct |
5 ms |
7332 KB |
ok, no valid answer |
52 |
Correct |
6 ms |
7756 KB |
ok, no valid answer |
53 |
Correct |
8 ms |
7868 KB |
ok, no valid answer |
54 |
Correct |
6 ms |
7608 KB |
ok, no valid answer |
55 |
Correct |
7 ms |
7696 KB |
ok, no valid answer |
56 |
Correct |
6 ms |
7628 KB |
ok, no valid answer |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
7244 KB |
ok, correct split |
2 |
Correct |
4 ms |
7344 KB |
ok, correct split |
3 |
Correct |
5 ms |
7244 KB |
ok, correct split |
4 |
Correct |
4 ms |
7352 KB |
ok, correct split |
5 |
Correct |
5 ms |
7244 KB |
ok, correct split |
6 |
Correct |
4 ms |
7244 KB |
ok, correct split |
7 |
Correct |
107 ms |
26308 KB |
ok, correct split |
8 |
Correct |
106 ms |
23628 KB |
ok, correct split |
9 |
Correct |
127 ms |
22832 KB |
ok, correct split |
10 |
Correct |
98 ms |
26816 KB |
ok, correct split |
11 |
Correct |
109 ms |
26776 KB |
ok, correct split |
12 |
Correct |
4 ms |
7244 KB |
ok, correct split |
13 |
Correct |
4 ms |
7344 KB |
ok, correct split |
14 |
Correct |
4 ms |
7244 KB |
ok, correct split |
15 |
Correct |
116 ms |
23352 KB |
ok, correct split |
16 |
Correct |
99 ms |
17704 KB |
ok, correct split |
17 |
Correct |
113 ms |
26932 KB |
ok, correct split |
18 |
Correct |
100 ms |
23364 KB |
ok, correct split |
19 |
Correct |
130 ms |
20488 KB |
ok, correct split |
20 |
Correct |
100 ms |
17548 KB |
ok, correct split |
21 |
Correct |
74 ms |
17836 KB |
ok, correct split |
22 |
Correct |
66 ms |
17832 KB |
ok, correct split |
23 |
Correct |
71 ms |
18168 KB |
ok, correct split |
24 |
Correct |
4 ms |
7244 KB |
ok, correct split |
25 |
Correct |
89 ms |
17716 KB |
ok, correct split |
26 |
Correct |
33 ms |
11468 KB |
ok, correct split |
27 |
Correct |
6 ms |
7244 KB |
ok, correct split |
28 |
Correct |
102 ms |
20536 KB |
ok, correct split |
29 |
Correct |
97 ms |
20276 KB |
ok, correct split |
30 |
Correct |
100 ms |
20020 KB |
ok, correct split |
31 |
Correct |
103 ms |
21700 KB |
ok, correct split |
32 |
Correct |
96 ms |
19892 KB |
ok, correct split |
33 |
Correct |
48 ms |
12992 KB |
ok, no valid answer |
34 |
Correct |
76 ms |
15684 KB |
ok, no valid answer |
35 |
Correct |
118 ms |
21156 KB |
ok, no valid answer |
36 |
Correct |
163 ms |
23740 KB |
ok, no valid answer |
37 |
Correct |
75 ms |
19064 KB |
ok, no valid answer |
38 |
Correct |
5 ms |
7244 KB |
ok, correct split |
39 |
Correct |
4 ms |
7244 KB |
ok, no valid answer |
40 |
Correct |
4 ms |
7244 KB |
ok, correct split |
41 |
Correct |
5 ms |
7244 KB |
ok, correct split |
42 |
Correct |
5 ms |
7244 KB |
ok, correct split |
43 |
Correct |
4 ms |
7348 KB |
ok, correct split |
44 |
Correct |
4 ms |
7244 KB |
ok, correct split |
45 |
Correct |
4 ms |
7244 KB |
ok, correct split |
46 |
Correct |
7 ms |
7628 KB |
ok, correct split |
47 |
Correct |
6 ms |
7628 KB |
ok, correct split |
48 |
Correct |
4 ms |
7372 KB |
ok, correct split |
49 |
Correct |
6 ms |
7612 KB |
ok, correct split |
50 |
Correct |
4 ms |
7340 KB |
ok, correct split |
51 |
Correct |
4 ms |
7244 KB |
ok, correct split |
52 |
Correct |
4 ms |
7244 KB |
ok, correct split |
53 |
Correct |
6 ms |
7324 KB |
ok, correct split |
54 |
Correct |
5 ms |
7324 KB |
ok, correct split |
55 |
Correct |
4 ms |
7244 KB |
ok, correct split |
56 |
Correct |
5 ms |
7372 KB |
ok, correct split |
57 |
Correct |
5 ms |
7372 KB |
ok, correct split |
58 |
Correct |
6 ms |
7636 KB |
ok, correct split |
59 |
Correct |
6 ms |
7628 KB |
ok, correct split |
60 |
Correct |
6 ms |
7628 KB |
ok, correct split |
61 |
Correct |
6 ms |
7628 KB |
ok, correct split |
62 |
Correct |
6 ms |
7628 KB |
ok, correct split |
63 |
Correct |
6 ms |
7628 KB |
ok, correct split |
64 |
Correct |
6 ms |
7628 KB |
ok, correct split |
65 |
Correct |
7 ms |
7628 KB |
ok, correct split |
66 |
Correct |
5 ms |
7348 KB |
ok, correct split |
67 |
Correct |
6 ms |
7628 KB |
ok, correct split |
68 |
Correct |
5 ms |
7372 KB |
ok, correct split |
69 |
Correct |
5 ms |
7372 KB |
ok, correct split |
70 |
Correct |
5 ms |
7344 KB |
ok, correct split |
71 |
Correct |
7 ms |
7740 KB |
ok, correct split |
72 |
Correct |
7 ms |
7628 KB |
ok, correct split |
73 |
Correct |
7 ms |
7628 KB |
ok, correct split |
74 |
Correct |
7 ms |
7756 KB |
ok, correct split |
75 |
Correct |
7 ms |
7736 KB |
ok, correct split |
76 |
Correct |
7 ms |
7752 KB |
ok, correct split |
77 |
Correct |
6 ms |
7628 KB |
ok, correct split |
78 |
Correct |
5 ms |
7500 KB |
ok, correct split |
79 |
Correct |
5 ms |
7500 KB |
ok, correct split |
80 |
Correct |
7 ms |
7740 KB |
ok, correct split |
81 |
Correct |
7 ms |
7628 KB |
ok, correct split |
82 |
Correct |
7 ms |
7740 KB |
ok, correct split |
83 |
Correct |
8 ms |
7608 KB |
ok, correct split |
84 |
Correct |
7 ms |
7756 KB |
ok, no valid answer |
85 |
Correct |
6 ms |
7480 KB |
ok, correct split |
86 |
Correct |
6 ms |
7612 KB |
ok, correct split |
87 |
Correct |
4 ms |
7288 KB |
ok, no valid answer |
88 |
Correct |
5 ms |
7332 KB |
ok, no valid answer |
89 |
Correct |
6 ms |
7756 KB |
ok, no valid answer |
90 |
Correct |
8 ms |
7868 KB |
ok, no valid answer |
91 |
Correct |
6 ms |
7608 KB |
ok, no valid answer |
92 |
Correct |
7 ms |
7696 KB |
ok, no valid answer |
93 |
Correct |
6 ms |
7628 KB |
ok, no valid answer |
94 |
Correct |
116 ms |
20932 KB |
ok, correct split |
95 |
Correct |
160 ms |
26424 KB |
ok, correct split |
96 |
Correct |
166 ms |
24644 KB |
ok, correct split |
97 |
Correct |
33 ms |
11384 KB |
ok, correct split |
98 |
Correct |
35 ms |
11536 KB |
ok, correct split |
99 |
Correct |
52 ms |
13988 KB |
ok, correct split |
100 |
Correct |
193 ms |
21168 KB |
ok, correct split |
101 |
Correct |
128 ms |
20164 KB |
ok, correct split |
102 |
Correct |
126 ms |
19788 KB |
ok, correct split |
103 |
Correct |
151 ms |
19644 KB |
ok, correct split |
104 |
Correct |
104 ms |
21376 KB |
ok, correct split |
105 |
Correct |
92 ms |
17092 KB |
ok, correct split |
106 |
Correct |
152 ms |
23352 KB |
ok, correct split |
107 |
Correct |
144 ms |
23364 KB |
ok, correct split |
108 |
Correct |
179 ms |
23348 KB |
ok, correct split |
109 |
Correct |
214 ms |
27016 KB |
ok, correct split |
110 |
Correct |
179 ms |
24528 KB |
ok, correct split |
111 |
Correct |
197 ms |
24628 KB |
ok, correct split |
112 |
Correct |
165 ms |
25552 KB |
ok, correct split |
113 |
Correct |
189 ms |
25584 KB |
ok, correct split |
114 |
Correct |
16 ms |
9036 KB |
ok, correct split |
115 |
Correct |
15 ms |
8780 KB |
ok, correct split |
116 |
Correct |
159 ms |
24508 KB |
ok, correct split |
117 |
Correct |
203 ms |
24488 KB |
ok, correct split |
118 |
Correct |
91 ms |
17604 KB |
ok, correct split |
119 |
Correct |
101 ms |
17476 KB |
ok, correct split |
120 |
Correct |
112 ms |
22468 KB |
ok, correct split |
121 |
Correct |
181 ms |
24296 KB |
ok, no valid answer |
122 |
Correct |
167 ms |
23276 KB |
ok, no valid answer |
123 |
Correct |
284 ms |
31164 KB |
ok, no valid answer |
124 |
Correct |
278 ms |
30656 KB |
ok, no valid answer |
125 |
Correct |
138 ms |
21644 KB |
ok, no valid answer |
126 |
Correct |
73 ms |
17864 KB |
ok, no valid answer |
127 |
Correct |
167 ms |
23352 KB |
ok, no valid answer |