oj.uz

Submission #949199

# Submission time Handle Problem Language Result Execution time Memory
949199 2024-03-19T03:38:18 Z Tuanlinh123 Mergers (JOI19_mergers) C++17
70 / 100
 695 ms 250540 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];
ll P[maxn], col[maxn], lca[maxn], pa[maxn], dsu[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), P[col[u]]=LCA(P[col[u]], P[col[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], P[col[i]]=LCA(P[col[i]], i), dsu[i]=-1;
    dfs1(1);
    for (ll i=1; i<=n; i++)
        if (i!=P[col[i]])
            Union(col[i], col[pa[i]]);
    for (ll i=1; i<=n; i++) col[i]=Find(col[i]);
    for (ll i=1; i<=k; i++) P[i]=0;
    for (ll i=1; i<=n; i++)
        for (ll j:A[i])
            if (col[i]!=col[j])
            {
                if (P[col[i]]==0) P[col[i]]=col[j];
                else if (P[col[i]]!=col[j]) P[col[i]]=-1;
            }
    ll cnt=0;
    for (ll i=1; i<=k; i++)
        cnt+=P[i]>0;
    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

# Verdict Execution time Memory Grader output
1 Correct 4 ms 24920 KB Output is correct
2 Correct 6 ms 33116 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 27056 KB Output is correct
5 Correct 6 ms 24924 KB Output is correct
6 Correct 6 ms 33116 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 6 ms 33116 KB Output is correct
9 Correct 6 ms 27124 KB Output is correct
10 Correct 4 ms 22876 KB Output is correct
11 Correct 6 ms 33320 KB Output is correct
12 Correct 6 ms 33116 KB Output is correct
13 Correct 5 ms 27140 KB Output is correct
14 Correct 5 ms 33116 KB Output is correct
15 Correct 5 ms 33288 KB Output is correct
16 Correct 4 ms 24936 KB Output is correct
17 Correct 5 ms 25068 KB Output is correct
18 Correct 6 ms 33116 KB Output is correct
19 Correct 5 ms 25088 KB Output is correct
20 Correct 4 ms 24920 KB Output is correct
21 Correct 5 ms 33112 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 5 ms 26972 KB Output is correct
24 Correct 5 ms 26972 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 24920 KB Output is correct
2 Correct 6 ms 33116 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 27056 KB Output is correct
5 Correct 6 ms 24924 KB Output is correct
6 Correct 6 ms 33116 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 6 ms 33116 KB Output is correct
9 Correct 6 ms 27124 KB Output is correct
10 Correct 4 ms 22876 KB Output is correct
11 Correct 6 ms 33320 KB Output is correct
12 Correct 6 ms 33116 KB Output is correct
13 Correct 5 ms 27140 KB Output is correct
14 Correct 5 ms 33116 KB Output is correct
15 Correct 5 ms 33288 KB Output is correct
16 Correct 4 ms 24936 KB Output is correct
17 Correct 5 ms 25068 KB Output is correct
18 Correct 6 ms 33116 KB Output is correct
19 Correct 5 ms 25088 KB Output is correct
20 Correct 4 ms 24920 KB Output is correct
21 Correct 5 ms 33112 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 5 ms 26972 KB Output is correct
24 Correct 5 ms 26972 KB Output is correct
25 Correct 5 ms 31068 KB Output is correct
26 Correct 9 ms 45912 KB Output is correct
27 Correct 8 ms 45916 KB Output is correct
28 Correct 8 ms 46172 KB Output is correct
29 Correct 9 ms 46024 KB Output is correct
30 Correct 9 ms 45916 KB Output is correct
31 Correct 5 ms 31068 KB Output is correct
32 Correct 9 ms 46172 KB Output is correct
33 Correct 5 ms 31068 KB Output is correct
34 Correct 9 ms 45832 KB Output is correct
35 Correct 8 ms 45988 KB Output is correct
36 Correct 9 ms 45916 KB Output is correct
37 Correct 9 ms 45916 KB Output is correct
38 Correct 6 ms 33112 KB Output is correct
39 Correct 9 ms 45912 KB Output is correct
40 Correct 8 ms 45916 KB Output is correct
41 Correct 8 ms 45820 KB Output is correct
42 Correct 8 ms 45912 KB Output is correct
43 Correct 8 ms 46172 KB Output is correct
44 Correct 6 ms 33368 KB Output is correct
45 Correct 10 ms 45912 KB Output is correct
46 Correct 9 ms 45916 KB Output is correct
47 Correct 6 ms 33116 KB Output is correct
48 Correct 9 ms 45916 KB Output is correct
49 Correct 8 ms 46088 KB Output is correct
50 Correct 8 ms 46172 KB Output is correct
51 Correct 9 ms 45916 KB Output is correct
52 Correct 8 ms 45824 KB Output is correct
53 Correct 9 ms 45916 KB Output is correct
54 Correct 8 ms 45916 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 24920 KB Output is correct
2 Correct 6 ms 33116 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 27056 KB Output is correct
5 Correct 6 ms 24924 KB Output is correct
6 Correct 6 ms 33116 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 6 ms 33116 KB Output is correct
9 Correct 6 ms 27124 KB Output is correct
10 Correct 4 ms 22876 KB Output is correct
11 Correct 6 ms 33320 KB Output is correct
12 Correct 6 ms 33116 KB Output is correct
13 Correct 5 ms 27140 KB Output is correct
14 Correct 5 ms 33116 KB Output is correct
15 Correct 5 ms 33288 KB Output is correct
16 Correct 4 ms 24936 KB Output is correct
17 Correct 5 ms 25068 KB Output is correct
18 Correct 6 ms 33116 KB Output is correct
19 Correct 5 ms 25088 KB Output is correct
20 Correct 4 ms 24920 KB Output is correct
21 Correct 5 ms 33112 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 5 ms 26972 KB Output is correct
24 Correct 5 ms 26972 KB Output is correct
25 Correct 5 ms 31068 KB Output is correct
26 Correct 64 ms 124088 KB Output is correct
27 Correct 72 ms 123064 KB Output is correct
28 Correct 8 ms 45912 KB Output is correct
29 Correct 5 ms 31068 KB Output is correct
30 Correct 6 ms 31068 KB Output is correct
31 Correct 74 ms 122920 KB Output is correct
32 Correct 8 ms 45912 KB Output is correct
33 Correct 79 ms 131848 KB Output is correct
34 Correct 75 ms 123524 KB Output is correct
35 Correct 9 ms 45916 KB Output is correct
36 Correct 70 ms 122696 KB Output is correct
37 Correct 8 ms 46304 KB Output is correct
38 Correct 8 ms 45916 KB Output is correct
39 Correct 60 ms 124304 KB Output is correct
40 Correct 8 ms 46168 KB Output is correct
41 Correct 72 ms 122808 KB Output is correct
42 Correct 76 ms 124848 KB Output is correct
43 Correct 5 ms 33116 KB Output is correct
44 Correct 99 ms 132948 KB Output is correct
45 Correct 92 ms 129468 KB Output is correct
46 Correct 8 ms 45912 KB Output is correct
47 Correct 9 ms 45916 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 122556 KB Output is correct
2 Correct 63 ms 123320 KB Output is correct
3 Correct 10 ms 45912 KB Output is correct
4 Correct 8 ms 45916 KB Output is correct
5 Correct 5 ms 31068 KB Output is correct
6 Correct 6 ms 31220 KB Output is correct
7 Correct 8 ms 45912 KB Output is correct
8 Correct 82 ms 121816 KB Output is correct
9 Correct 8 ms 45916 KB Output is correct
10 Correct 91 ms 123096 KB Output is correct
11 Correct 5 ms 33116 KB Output is correct
12 Correct 76 ms 121872 KB Output is correct
13 Correct 118 ms 123904 KB Output is correct
14 Correct 81 ms 124052 KB Output is correct
15 Correct 55 ms 123956 KB Output is correct
16 Correct 8 ms 45976 KB Output is correct
17 Correct 5 ms 33116 KB Output is correct
18 Correct 61 ms 125200 KB Output is correct
19 Correct 75 ms 128180 KB Output is correct
20 Correct 8 ms 45916 KB Output is correct
21 Correct 6 ms 33112 KB Output is correct
22 Correct 58 ms 124608 KB Output is correct
23 Correct 10 ms 45912 KB Output is correct
24 Correct 82 ms 122528 KB Output is correct
25 Correct 87 ms 128444 KB Output is correct
26 Correct 8 ms 45912 KB Output is correct
27 Correct 8 ms 46080 KB Output is correct
28 Correct 9 ms 45912 KB Output is correct
29 Correct 8 ms 45916 KB Output is correct
30 Correct 8 ms 46020 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 24920 KB Output is correct
2 Correct 6 ms 33116 KB Output is correct
3 Correct 6 ms 33116 KB Output is correct
4 Correct 5 ms 27056 KB Output is correct
5 Correct 6 ms 24924 KB Output is correct
6 Correct 6 ms 33116 KB Output is correct
7 Correct 4 ms 18780 KB Output is correct
8 Correct 6 ms 33116 KB Output is correct
9 Correct 6 ms 27124 KB Output is correct
10 Correct 4 ms 22876 KB Output is correct
11 Correct 6 ms 33320 KB Output is correct
12 Correct 6 ms 33116 KB Output is correct
13 Correct 5 ms 27140 KB Output is correct
14 Correct 5 ms 33116 KB Output is correct
15 Correct 5 ms 33288 KB Output is correct
16 Correct 4 ms 24936 KB Output is correct
17 Correct 5 ms 25068 KB Output is correct
18 Correct 6 ms 33116 KB Output is correct
19 Correct 5 ms 25088 KB Output is correct
20 Correct 4 ms 24920 KB Output is correct
21 Correct 5 ms 33112 KB Output is correct
22 Correct 6 ms 33116 KB Output is correct
23 Correct 5 ms 26972 KB Output is correct
24 Correct 5 ms 26972 KB Output is correct
25 Correct 5 ms 31068 KB Output is correct
26 Correct 9 ms 45912 KB Output is correct
27 Correct 8 ms 45916 KB Output is correct
28 Correct 8 ms 46172 KB Output is correct
29 Correct 9 ms 46024 KB Output is correct
30 Correct 9 ms 45916 KB Output is correct
31 Correct 5 ms 31068 KB Output is correct
32 Correct 9 ms 46172 KB Output is correct
33 Correct 5 ms 31068 KB Output is correct
34 Correct 9 ms 45832 KB Output is correct
35 Correct 8 ms 45988 KB Output is correct
36 Correct 9 ms 45916 KB Output is correct
37 Correct 9 ms 45916 KB Output is correct
38 Correct 6 ms 33112 KB Output is correct
39 Correct 9 ms 45912 KB Output is correct
40 Correct 8 ms 45916 KB Output is correct
41 Correct 8 ms 45820 KB Output is correct
42 Correct 8 ms 45912 KB Output is correct
43 Correct 8 ms 46172 KB Output is correct
44 Correct 6 ms 33368 KB Output is correct
45 Correct 10 ms 45912 KB Output is correct
46 Correct 9 ms 45916 KB Output is correct
47 Correct 6 ms 33116 KB Output is correct
48 Correct 9 ms 45916 KB Output is correct
49 Correct 8 ms 46088 KB Output is correct
50 Correct 8 ms 46172 KB Output is correct
51 Correct 9 ms 45916 KB Output is correct
52 Correct 8 ms 45824 KB Output is correct
53 Correct 9 ms 45916 KB Output is correct
54 Correct 8 ms 45916 KB Output is correct
55 Correct 5 ms 31068 KB Output is correct
56 Correct 64 ms 124088 KB Output is correct
57 Correct 72 ms 123064 KB Output is correct
58 Correct 8 ms 45912 KB Output is correct
59 Correct 5 ms 31068 KB Output is correct
60 Correct 6 ms 31068 KB Output is correct
61 Correct 74 ms 122920 KB Output is correct
62 Correct 8 ms 45912 KB Output is correct
63 Correct 79 ms 131848 KB Output is correct
64 Correct 75 ms 123524 KB Output is correct
65 Correct 9 ms 45916 KB Output is correct
66 Correct 70 ms 122696 KB Output is correct
67 Correct 8 ms 46304 KB Output is correct
68 Correct 8 ms 45916 KB Output is correct
69 Correct 60 ms 124304 KB Output is correct
70 Correct 8 ms 46168 KB Output is correct
71 Correct 72 ms 122808 KB Output is correct
72 Correct 76 ms 124848 KB Output is correct
73 Correct 5 ms 33116 KB Output is correct
74 Correct 99 ms 132948 KB Output is correct
75 Correct 92 ms 129468 KB Output is correct
76 Correct 8 ms 45912 KB Output is correct
77 Correct 9 ms 45916 KB Output is correct
78 Correct 62 ms 122556 KB Output is correct
79 Correct 63 ms 123320 KB Output is correct
80 Correct 10 ms 45912 KB Output is correct
81 Correct 8 ms 45916 KB Output is correct
82 Correct 5 ms 31068 KB Output is correct
83 Correct 6 ms 31220 KB Output is correct
84 Correct 8 ms 45912 KB Output is correct
85 Correct 82 ms 121816 KB Output is correct
86 Correct 8 ms 45916 KB Output is correct
87 Correct 91 ms 123096 KB Output is correct
88 Correct 5 ms 33116 KB Output is correct
89 Correct 76 ms 121872 KB Output is correct
90 Correct 118 ms 123904 KB Output is correct
91 Correct 81 ms 124052 KB Output is correct
92 Correct 55 ms 123956 KB Output is correct
93 Correct 8 ms 45976 KB Output is correct
94 Correct 5 ms 33116 KB Output is correct
95 Correct 61 ms 125200 KB Output is correct
96 Correct 75 ms 128180 KB Output is correct
97 Correct 8 ms 45916 KB Output is correct
98 Correct 6 ms 33112 KB Output is correct
99 Correct 58 ms 124608 KB Output is correct
100 Correct 10 ms 45912 KB Output is correct
101 Correct 82 ms 122528 KB Output is correct
102 Correct 87 ms 128444 KB Output is correct
103 Correct 8 ms 45912 KB Output is correct
104 Correct 8 ms 46080 KB Output is correct
105 Correct 9 ms 45912 KB Output is correct
106 Correct 8 ms 45916 KB Output is correct
107 Correct 8 ms 46020 KB Output is correct
108 Correct 403 ms 239540 KB Output is correct
109 Incorrect 695 ms 250540 KB Output isn't correct
110 Halted 0 ms 0 KB -