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답안 #949245

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
949245 2024-03-19T04:06:57 Z Tuanlinh123 Mergers (JOI19_mergers) C++17
70 / 100
 525 ms 262144 KB 
#include<bits/stdc++.h>
#define ll long long
#define pll pair<ll, ll>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ld long double
#define sz(a) ((ll)(a).size())
using namespace std;
 
const ll maxn=500005;
pll sp[20][maxn];
vector <pll> euler;
vector <ll> leaf, A[maxn], C[maxn];
ll P[maxn], col[maxn], lca[maxn], pa[maxn], dsu[maxn], cnt[maxn];
 
void dfs(ll u)
{
    lca[u]=sz(euler)+1, euler.pb({lca[u], u});
    for (ll v:A[u])
        if (v!=pa[u])
            pa[v]=u, dfs(v), euler.pb({lca[u], u});
    if (sz(A[u])==1) leaf.pb(u);
}
 
void initlca()
{
    ll n=sz(euler);
    for (ll i=0; i<n; i++)
        sp[0][i+1]=euler[i];
    for (ll i=1; i<20; i++)
        for (ll j=1; j+(1<<i)<=n+1; j++)
            sp[i][j]=min(sp[i-1][j], sp[i-1][j+(1<<i-1)]);
}
 
ll LCA(ll u, ll v)
{
    if (!u || !v) return u+v;
    ll l=lca[u], r=lca[v];
    if (l>r) swap(l, r);
    ll j=__lg(r-l+1);
    return min(sp[j][l], sp[j][r-(1<<j)+1]).se;
}
 
ll Find(ll i)
{
    if (dsu[i]<0) return i;
    return dsu[i]=Find(dsu[i]);
}
 
void Union(ll a, ll b)
{
    a=Find(a), b=Find(b);
    if (a==b) return;
    if (dsu[a]>dsu[b]) swap(a, b);
    P[a]=LCA(P[a], P[b]), dsu[a]+=dsu[b], dsu[b]=a;
}
 
void dfs1(ll u)
{
    for (ll v:A[u])
        if (v!=pa[u])
            dfs1(v), cnt[u]+=cnt[v];
}
 
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll n, k; cin >> n >> k;
    for (ll i=1; i<n; i++)
    {
        ll u, v; cin >> u >> v;
        A[u].pb(v), A[v].pb(u);
    }
    dfs(1), initlca();
    for (ll i=1; i<=n; i++)
        cin >> col[i], C[col[i]].pb(i), dsu[i]=-1;
    for (ll i=1; i<=n; i++)
        for (ll j=0; j+1<sz(C[i]); j++)
        {
            ll u=C[i][j], v=C[i][j+1];
            cnt[u]++, cnt[v]++, cnt[LCA(u, v)]-=2;
        }
    dfs1(1);
    for (ll i=1; i<=n; i++)
        if (pa[i] && cnt[i])
            Union(i, pa[i]);
    for (ll i=1; i<=n; i++) P[i]=0;
    for (ll i=1; i<=n; i++)
        if (!cnt[i] && pa[i])
            P[Find(i)]++, P[Find(pa[i])]++;
    ll cnt=0;
    for (ll i=1; i<=n; i++)
        cnt+=P[i]==1;
    cout << (cnt+1)/2;
 
}

Compilation message

mergers.cpp: In function 'void initlca()':
mergers.cpp:34:53: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   34 |             sp[i][j]=min(sp[i-1][j], sp[i-1][j+(1<<i-1)]);
      |                                                    ~^~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37212 KB Output is correct
2 Correct 9 ms 45404 KB Output is correct
3 Correct 8 ms 45632 KB Output is correct
4 Correct 9 ms 39260 KB Output is correct
5 Correct 7 ms 37208 KB Output is correct
6 Correct 9 ms 45404 KB Output is correct
7 Correct 15 ms 33236 KB Output is correct
8 Correct 13 ms 45404 KB Output is correct
9 Correct 9 ms 39260 KB Output is correct
10 Correct 7 ms 35164 KB Output is correct
11 Correct 9 ms 45404 KB Output is correct
12 Correct 9 ms 45400 KB Output is correct
13 Correct 11 ms 39260 KB Output is correct
14 Correct 8 ms 45400 KB Output is correct
15 Correct 10 ms 45628 KB Output is correct
16 Correct 10 ms 39256 KB Output is correct
17 Correct 7 ms 37212 KB Output is correct
18 Correct 8 ms 45400 KB Output is correct
19 Correct 8 ms 39260 KB Output is correct
20 Correct 7 ms 39260 KB Output is correct
21 Correct 9 ms 45404 KB Output is correct
22 Correct 8 ms 45404 KB Output is correct
23 Correct 8 ms 39448 KB Output is correct
24 Correct 7 ms 39260 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37212 KB Output is correct
2 Correct 9 ms 45404 KB Output is correct
3 Correct 8 ms 45632 KB Output is correct
4 Correct 9 ms 39260 KB Output is correct
5 Correct 7 ms 37208 KB Output is correct
6 Correct 9 ms 45404 KB Output is correct
7 Correct 15 ms 33236 KB Output is correct
8 Correct 13 ms 45404 KB Output is correct
9 Correct 9 ms 39260 KB Output is correct
10 Correct 7 ms 35164 KB Output is correct
11 Correct 9 ms 45404 KB Output is correct
12 Correct 9 ms 45400 KB Output is correct
13 Correct 11 ms 39260 KB Output is correct
14 Correct 8 ms 45400 KB Output is correct
15 Correct 10 ms 45628 KB Output is correct
16 Correct 10 ms 39256 KB Output is correct
17 Correct 7 ms 37212 KB Output is correct
18 Correct 8 ms 45400 KB Output is correct
19 Correct 8 ms 39260 KB Output is correct
20 Correct 7 ms 39260 KB Output is correct
21 Correct 9 ms 45404 KB Output is correct
22 Correct 8 ms 45404 KB Output is correct
23 Correct 8 ms 39448 KB Output is correct
24 Correct 7 ms 39260 KB Output is correct
25 Correct 10 ms 43356 KB Output is correct
26 Correct 13 ms 56232 KB Output is correct
27 Correct 11 ms 56152 KB Output is correct
28 Correct 14 ms 56464 KB Output is correct
29 Correct 11 ms 56156 KB Output is correct
30 Correct 11 ms 56156 KB Output is correct
31 Correct 8 ms 43448 KB Output is correct
32 Correct 12 ms 56412 KB Output is correct
33 Correct 8 ms 43356 KB Output is correct
34 Correct 13 ms 56156 KB Output is correct
35 Correct 12 ms 58244 KB Output is correct
36 Correct 11 ms 56156 KB Output is correct
37 Correct 11 ms 56156 KB Output is correct
38 Correct 10 ms 45512 KB Output is correct
39 Correct 13 ms 56156 KB Output is correct
40 Correct 13 ms 56152 KB Output is correct
41 Correct 13 ms 56156 KB Output is correct
42 Correct 13 ms 56156 KB Output is correct
43 Correct 11 ms 56412 KB Output is correct
44 Correct 10 ms 45632 KB Output is correct
45 Correct 13 ms 56280 KB Output is correct
46 Correct 11 ms 56296 KB Output is correct
47 Correct 8 ms 45404 KB Output is correct
48 Correct 12 ms 56296 KB Output is correct
49 Correct 11 ms 58204 KB Output is correct
50 Correct 12 ms 58384 KB Output is correct
51 Correct 11 ms 56288 KB Output is correct
52 Correct 10 ms 56156 KB Output is correct
53 Correct 10 ms 56156 KB Output is correct
54 Correct 11 ms 56240 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37212 KB Output is correct
2 Correct 9 ms 45404 KB Output is correct
3 Correct 8 ms 45632 KB Output is correct
4 Correct 9 ms 39260 KB Output is correct
5 Correct 7 ms 37208 KB Output is correct
6 Correct 9 ms 45404 KB Output is correct
7 Correct 15 ms 33236 KB Output is correct
8 Correct 13 ms 45404 KB Output is correct
9 Correct 9 ms 39260 KB Output is correct
10 Correct 7 ms 35164 KB Output is correct
11 Correct 9 ms 45404 KB Output is correct
12 Correct 9 ms 45400 KB Output is correct
13 Correct 11 ms 39260 KB Output is correct
14 Correct 8 ms 45400 KB Output is correct
15 Correct 10 ms 45628 KB Output is correct
16 Correct 10 ms 39256 KB Output is correct
17 Correct 7 ms 37212 KB Output is correct
18 Correct 8 ms 45400 KB Output is correct
19 Correct 8 ms 39260 KB Output is correct
20 Correct 7 ms 39260 KB Output is correct
21 Correct 9 ms 45404 KB Output is correct
22 Correct 8 ms 45404 KB Output is correct
23 Correct 8 ms 39448 KB Output is correct
24 Correct 7 ms 39260 KB Output is correct
25 Correct 8 ms 43352 KB Output is correct
26 Correct 79 ms 137912 KB Output is correct
27 Correct 95 ms 137400 KB Output is correct
28 Correct 11 ms 56152 KB Output is correct
29 Correct 8 ms 43608 KB Output is correct
30 Correct 9 ms 43352 KB Output is correct
31 Correct 88 ms 137428 KB Output is correct
32 Correct 12 ms 56156 KB Output is correct
33 Correct 97 ms 146564 KB Output is correct
34 Correct 82 ms 138232 KB Output is correct
35 Correct 13 ms 56152 KB Output is correct
36 Correct 92 ms 137572 KB Output is correct
37 Correct 11 ms 56408 KB Output is correct
38 Correct 11 ms 56156 KB Output is correct
39 Correct 66 ms 138036 KB Output is correct
40 Correct 11 ms 56412 KB Output is correct
41 Correct 88 ms 138208 KB Output is correct
42 Correct 81 ms 140640 KB Output is correct
43 Correct 8 ms 45624 KB Output is correct
44 Correct 94 ms 147640 KB Output is correct
45 Correct 90 ms 143472 KB Output is correct
46 Correct 11 ms 56156 KB Output is correct
47 Correct 14 ms 56252 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 86 ms 138176 KB Output is correct
2 Correct 77 ms 139928 KB Output is correct
3 Correct 12 ms 56156 KB Output is correct
4 Correct 13 ms 56156 KB Output is correct
5 Correct 8 ms 43356 KB Output is correct
6 Correct 8 ms 43576 KB Output is correct
7 Correct 12 ms 56156 KB Output is correct
8 Correct 115 ms 138204 KB Output is correct
9 Correct 11 ms 56152 KB Output is correct
10 Correct 89 ms 138512 KB Output is correct
11 Correct 10 ms 45400 KB Output is correct
12 Correct 100 ms 137476 KB Output is correct
13 Correct 114 ms 138016 KB Output is correct
14 Correct 102 ms 139192 KB Output is correct
15 Correct 63 ms 138068 KB Output is correct
16 Correct 12 ms 56156 KB Output is correct
17 Correct 9 ms 45404 KB Output is correct
18 Correct 74 ms 139684 KB Output is correct
19 Correct 98 ms 144916 KB Output is correct
20 Correct 12 ms 56156 KB Output is correct
21 Correct 9 ms 45628 KB Output is correct
22 Correct 76 ms 138756 KB Output is correct
23 Correct 11 ms 56152 KB Output is correct
24 Correct 109 ms 137332 KB Output is correct
25 Correct 144 ms 143300 KB Output is correct
26 Correct 11 ms 58204 KB Output is correct
27 Correct 11 ms 58324 KB Output is correct
28 Correct 11 ms 56156 KB Output is correct
29 Correct 11 ms 56156 KB Output is correct
30 Correct 11 ms 56156 KB Output is correct

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37212 KB Output is correct
2 Correct 9 ms 45404 KB Output is correct
3 Correct 8 ms 45632 KB Output is correct
4 Correct 9 ms 39260 KB Output is correct
5 Correct 7 ms 37208 KB Output is correct
6 Correct 9 ms 45404 KB Output is correct
7 Correct 15 ms 33236 KB Output is correct
8 Correct 13 ms 45404 KB Output is correct
9 Correct 9 ms 39260 KB Output is correct
10 Correct 7 ms 35164 KB Output is correct
11 Correct 9 ms 45404 KB Output is correct
12 Correct 9 ms 45400 KB Output is correct
13 Correct 11 ms 39260 KB Output is correct
14 Correct 8 ms 45400 KB Output is correct
15 Correct 10 ms 45628 KB Output is correct
16 Correct 10 ms 39256 KB Output is correct
17 Correct 7 ms 37212 KB Output is correct
18 Correct 8 ms 45400 KB Output is correct
19 Correct 8 ms 39260 KB Output is correct
20 Correct 7 ms 39260 KB Output is correct
21 Correct 9 ms 45404 KB Output is correct
22 Correct 8 ms 45404 KB Output is correct
23 Correct 8 ms 39448 KB Output is correct
24 Correct 7 ms 39260 KB Output is correct
25 Correct 10 ms 43356 KB Output is correct
26 Correct 13 ms 56232 KB Output is correct
27 Correct 11 ms 56152 KB Output is correct
28 Correct 14 ms 56464 KB Output is correct
29 Correct 11 ms 56156 KB Output is correct
30 Correct 11 ms 56156 KB Output is correct
31 Correct 8 ms 43448 KB Output is correct
32 Correct 12 ms 56412 KB Output is correct
33 Correct 8 ms 43356 KB Output is correct
34 Correct 13 ms 56156 KB Output is correct
35 Correct 12 ms 58244 KB Output is correct
36 Correct 11 ms 56156 KB Output is correct
37 Correct 11 ms 56156 KB Output is correct
38 Correct 10 ms 45512 KB Output is correct
39 Correct 13 ms 56156 KB Output is correct
40 Correct 13 ms 56152 KB Output is correct
41 Correct 13 ms 56156 KB Output is correct
42 Correct 13 ms 56156 KB Output is correct
43 Correct 11 ms 56412 KB Output is correct
44 Correct 10 ms 45632 KB Output is correct
45 Correct 13 ms 56280 KB Output is correct
46 Correct 11 ms 56296 KB Output is correct
47 Correct 8 ms 45404 KB Output is correct
48 Correct 12 ms 56296 KB Output is correct
49 Correct 11 ms 58204 KB Output is correct
50 Correct 12 ms 58384 KB Output is correct
51 Correct 11 ms 56288 KB Output is correct
52 Correct 10 ms 56156 KB Output is correct
53 Correct 10 ms 56156 KB Output is correct
54 Correct 11 ms 56240 KB Output is correct
55 Correct 8 ms 43352 KB Output is correct
56 Correct 79 ms 137912 KB Output is correct
57 Correct 95 ms 137400 KB Output is correct
58 Correct 11 ms 56152 KB Output is correct
59 Correct 8 ms 43608 KB Output is correct
60 Correct 9 ms 43352 KB Output is correct
61 Correct 88 ms 137428 KB Output is correct
62 Correct 12 ms 56156 KB Output is correct
63 Correct 97 ms 146564 KB Output is correct
64 Correct 82 ms 138232 KB Output is correct
65 Correct 13 ms 56152 KB Output is correct
66 Correct 92 ms 137572 KB Output is correct
67 Correct 11 ms 56408 KB Output is correct
68 Correct 11 ms 56156 KB Output is correct
69 Correct 66 ms 138036 KB Output is correct
70 Correct 11 ms 56412 KB Output is correct
71 Correct 88 ms 138208 KB Output is correct
72 Correct 81 ms 140640 KB Output is correct
73 Correct 8 ms 45624 KB Output is correct
74 Correct 94 ms 147640 KB Output is correct
75 Correct 90 ms 143472 KB Output is correct
76 Correct 11 ms 56156 KB Output is correct
77 Correct 14 ms 56252 KB Output is correct
78 Correct 86 ms 138176 KB Output is correct
79 Correct 77 ms 139928 KB Output is correct
80 Correct 12 ms 56156 KB Output is correct
81 Correct 13 ms 56156 KB Output is correct
82 Correct 8 ms 43356 KB Output is correct
83 Correct 8 ms 43576 KB Output is correct
84 Correct 12 ms 56156 KB Output is correct
85 Correct 115 ms 138204 KB Output is correct
86 Correct 11 ms 56152 KB Output is correct
87 Correct 89 ms 138512 KB Output is correct
88 Correct 10 ms 45400 KB Output is correct
89 Correct 100 ms 137476 KB Output is correct
90 Correct 114 ms 138016 KB Output is correct
91 Correct 102 ms 139192 KB Output is correct
92 Correct 63 ms 138068 KB Output is correct
93 Correct 12 ms 56156 KB Output is correct
94 Correct 9 ms 45404 KB Output is correct
95 Correct 74 ms 139684 KB Output is correct
96 Correct 98 ms 144916 KB Output is correct
97 Correct 12 ms 56156 KB Output is correct
98 Correct 9 ms 45628 KB Output is correct
99 Correct 76 ms 138756 KB Output is correct
100 Correct 11 ms 56152 KB Output is correct
101 Correct 109 ms 137332 KB Output is correct
102 Correct 144 ms 143300 KB Output is correct
103 Correct 11 ms 58204 KB Output is correct
104 Correct 11 ms 58324 KB Output is correct
105 Correct 11 ms 56156 KB Output is correct
106 Correct 11 ms 56156 KB Output is correct
107 Correct 11 ms 56156 KB Output is correct
108 Correct 525 ms 251460 KB Output is correct
109 Runtime error 448 ms 262144 KB Execution killed with signal 9
110 Halted 0 ms 0 KB -