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답안 #722027

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
722027 2023-04-11T10:37:31 Z fdnfksd Mergers (JOI19_mergers) C++14
100 / 100
 1250 ms 206200 KB 
#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=5e5+10;
const ll inf=1e18;
const ll mod=1e9+7;
ll P[maxN][21],h[maxN],in[maxN],out[maxN],tg=0;
vector<ll>g[maxN];
void dfs(ll u=1,ll p=1)
{
    P[u][0]=p;
    in[u]=++tg;
    for(int i=1;i<=20;i++) P[u][i]=P[P[u][i-1]][i-1];
    for(int v:g[u])
    {
        if(v!=p)
        {
            h[v]=h[u]+1;
            dfs(v,u);
        }
    }
}
ll cnt[maxN];
vector<ll>adj[maxN];
void dfs1(ll u=1,ll p=0)
{
    for(int v:g[u])
    {
        if(v!=p)
        {
            dfs1(v,u);
            cnt[u]+=cnt[v];
        }
    }
}
void dfs2(ll u=1,ll p=0,ll last=-1)
{
    if(cnt[u]==0&&last!=-1)
    {
        adj[u].pb(last);
        adj[last].pb(u);
    }
    if(cnt[u]==0) last=u;
    for(int v:g[u])
    {
        if(v!=p)
        {
            dfs2(v,u,last);
        }
    }
}
ll n,k;
vector<ll>vec[maxN];
bool cmp(ll x,ll y)
{
    return in[x]<in[y];
}
ll lca(ll u,ll v)
{
    if(h[u]<h[v]) swap(u,v);
    for(int i=20;i>=0;i--) if(h[u]-(1<<i)>=h[v]) u=P[u][i];
    if(u==v) return u;
    for(int i=20;i>=0;i--) if(P[u][i]!=P[v][i]) u=P[u][i],v=P[v][i];
    return P[u][0];
}
void solve()
{
    cin >> n >> k;
    for(int i=1;i<n;i++)
    {
        ll u,v;
        cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
    }
    dfs();
    for(int i=1;i<=n;i++)
    {
        ll x;
        cin >> x;
        vec[x].pb(i);
    }
    for(int i=1;i<=k;i++)
    {
        sort(vec[i].begin(),vec[i].end(),cmp);
        for(int j=0;j<vec[i].size();j++)
        {
            cnt[vec[i][j]]++;
            cnt[lca(vec[i][j],vec[i][(j+1)%vec[i].size()])]--;
        }
    }
    dfs1();
    dfs2();
    ll ct=0;
    for(int i=1;i<=n;i++)
    {
        if(adj[i].size()==1) ct++;
    }
    cout <<(ct+1)/2;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message

mergers.cpp: In function 'void solve()':
mergers.cpp:92:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |         for(int j=0;j<vec[i].size();j++)
      |                     ~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 35540 KB Output is correct
2 Correct 19 ms 35560 KB Output is correct
3 Correct 18 ms 35560 KB Output is correct
4 Correct 19 ms 35524 KB Output is correct
5 Correct 18 ms 35528 KB Output is correct
6 Correct 18 ms 35552 KB Output is correct
7 Correct 20 ms 35560 KB Output is correct
8 Correct 20 ms 35584 KB Output is correct
9 Correct 19 ms 35508 KB Output is correct
10 Correct 17 ms 35472 KB Output is correct
11 Correct 17 ms 35616 KB Output is correct
12 Correct 19 ms 35500 KB Output is correct
13 Correct 23 ms 35480 KB Output is correct
14 Correct 18 ms 35508 KB Output is correct
15 Correct 19 ms 35540 KB Output is correct
16 Correct 18 ms 35540 KB Output is correct
17 Correct 20 ms 35540 KB Output is correct
18 Correct 18 ms 35540 KB Output is correct
19 Correct 18 ms 35540 KB Output is correct
20 Correct 18 ms 35556 KB Output is correct
21 Correct 18 ms 35528 KB Output is correct
22 Correct 18 ms 35512 KB Output is correct
23 Correct 18 ms 35540 KB Output is correct
24 Correct 17 ms 35540 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 35540 KB Output is correct
2 Correct 19 ms 35560 KB Output is correct
3 Correct 18 ms 35560 KB Output is correct
4 Correct 19 ms 35524 KB Output is correct
5 Correct 18 ms 35528 KB Output is correct
6 Correct 18 ms 35552 KB Output is correct
7 Correct 20 ms 35560 KB Output is correct
8 Correct 20 ms 35584 KB Output is correct
9 Correct 19 ms 35508 KB Output is correct
10 Correct 17 ms 35472 KB Output is correct
11 Correct 17 ms 35616 KB Output is correct
12 Correct 19 ms 35500 KB Output is correct
13 Correct 23 ms 35480 KB Output is correct
14 Correct 18 ms 35508 KB Output is correct
15 Correct 19 ms 35540 KB Output is correct
16 Correct 18 ms 35540 KB Output is correct
17 Correct 20 ms 35540 KB Output is correct
18 Correct 18 ms 35540 KB Output is correct
19 Correct 18 ms 35540 KB Output is correct
20 Correct 18 ms 35556 KB Output is correct
21 Correct 18 ms 35528 KB Output is correct
22 Correct 18 ms 35512 KB Output is correct
23 Correct 18 ms 35540 KB Output is correct
24 Correct 17 ms 35540 KB Output is correct
25 Correct 17 ms 35496 KB Output is correct
26 Correct 21 ms 36392 KB Output is correct
27 Correct 19 ms 36284 KB Output is correct
28 Correct 21 ms 36564 KB Output is correct
29 Correct 20 ms 36460 KB Output is correct
30 Correct 19 ms 36320 KB Output is correct
31 Correct 18 ms 35560 KB Output is correct
32 Correct 20 ms 36408 KB Output is correct
33 Correct 18 ms 35540 KB Output is correct
34 Correct 21 ms 36284 KB Output is correct
35 Correct 20 ms 36460 KB Output is correct
36 Correct 18 ms 36308 KB Output is correct
37 Correct 20 ms 36300 KB Output is correct
38 Correct 19 ms 35548 KB Output is correct
39 Correct 21 ms 36340 KB Output is correct
40 Correct 21 ms 36336 KB Output is correct
41 Correct 20 ms 36304 KB Output is correct
42 Correct 20 ms 36308 KB Output is correct
43 Correct 19 ms 36464 KB Output is correct
44 Correct 18 ms 35540 KB Output is correct
45 Correct 21 ms 36284 KB Output is correct
46 Correct 20 ms 36356 KB Output is correct
47 Correct 18 ms 35556 KB Output is correct
48 Correct 20 ms 36304 KB Output is correct
49 Correct 19 ms 36436 KB Output is correct
50 Correct 20 ms 36564 KB Output is correct
51 Correct 20 ms 36336 KB Output is correct
52 Correct 21 ms 36340 KB Output is correct
53 Correct 21 ms 36324 KB Output is correct
54 Correct 20 ms 36344 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 35540 KB Output is correct
2 Correct 19 ms 35560 KB Output is correct
3 Correct 18 ms 35560 KB Output is correct
4 Correct 19 ms 35524 KB Output is correct
5 Correct 18 ms 35528 KB Output is correct
6 Correct 18 ms 35552 KB Output is correct
7 Correct 20 ms 35560 KB Output is correct
8 Correct 20 ms 35584 KB Output is correct
9 Correct 19 ms 35508 KB Output is correct
10 Correct 17 ms 35472 KB Output is correct
11 Correct 17 ms 35616 KB Output is correct
12 Correct 19 ms 35500 KB Output is correct
13 Correct 23 ms 35480 KB Output is correct
14 Correct 18 ms 35508 KB Output is correct
15 Correct 19 ms 35540 KB Output is correct
16 Correct 18 ms 35540 KB Output is correct
17 Correct 20 ms 35540 KB Output is correct
18 Correct 18 ms 35540 KB Output is correct
19 Correct 18 ms 35540 KB Output is correct
20 Correct 18 ms 35556 KB Output is correct
21 Correct 18 ms 35528 KB Output is correct
22 Correct 18 ms 35512 KB Output is correct
23 Correct 18 ms 35540 KB Output is correct
24 Correct 17 ms 35540 KB Output is correct
25 Correct 19 ms 35540 KB Output is correct
26 Correct 118 ms 60832 KB Output is correct
27 Correct 157 ms 60508 KB Output is correct
28 Correct 21 ms 36336 KB Output is correct
29 Correct 20 ms 35496 KB Output is correct
30 Correct 19 ms 35540 KB Output is correct
31 Correct 133 ms 60456 KB Output is correct
32 Correct 20 ms 36308 KB Output is correct
33 Correct 190 ms 65740 KB Output is correct
34 Correct 152 ms 60684 KB Output is correct
35 Correct 20 ms 36308 KB Output is correct
36 Correct 163 ms 60512 KB Output is correct
37 Correct 21 ms 36308 KB Output is correct
38 Correct 20 ms 36352 KB Output is correct
39 Correct 115 ms 60696 KB Output is correct
40 Correct 21 ms 36412 KB Output is correct
41 Correct 139 ms 60308 KB Output is correct
42 Correct 173 ms 61932 KB Output is correct
43 Correct 18 ms 35540 KB Output is correct
44 Correct 170 ms 65724 KB Output is correct
45 Correct 183 ms 64208 KB Output is correct
46 Correct 20 ms 36264 KB Output is correct
47 Correct 21 ms 36316 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 113 ms 60896 KB Output is correct
2 Correct 113 ms 67000 KB Output is correct
3 Correct 20 ms 36340 KB Output is correct
4 Correct 19 ms 36308 KB Output is correct
5 Correct 20 ms 35684 KB Output is correct
6 Correct 18 ms 35524 KB Output is correct
7 Correct 19 ms 36296 KB Output is correct
8 Correct 159 ms 62048 KB Output is correct
9 Correct 22 ms 36308 KB Output is correct
10 Correct 132 ms 60772 KB Output is correct
11 Correct 18 ms 35580 KB Output is correct
12 Correct 153 ms 60352 KB Output is correct
13 Correct 147 ms 62268 KB Output is correct
14 Correct 142 ms 66660 KB Output is correct
15 Correct 115 ms 60728 KB Output is correct
16 Correct 21 ms 36340 KB Output is correct
17 Correct 19 ms 35556 KB Output is correct
18 Correct 121 ms 66136 KB Output is correct
19 Correct 171 ms 68696 KB Output is correct
20 Correct 21 ms 36328 KB Output is correct
21 Correct 18 ms 35604 KB Output is correct
22 Correct 116 ms 62400 KB Output is correct
23 Correct 20 ms 36308 KB Output is correct
24 Correct 147 ms 61196 KB Output is correct
25 Correct 172 ms 69160 KB Output is correct
26 Correct 20 ms 36436 KB Output is correct
27 Correct 21 ms 36564 KB Output is correct
28 Correct 19 ms 36308 KB Output is correct
29 Correct 21 ms 36272 KB Output is correct
30 Correct 20 ms 36320 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 35540 KB Output is correct
2 Correct 19 ms 35560 KB Output is correct
3 Correct 18 ms 35560 KB Output is correct
4 Correct 19 ms 35524 KB Output is correct
5 Correct 18 ms 35528 KB Output is correct
6 Correct 18 ms 35552 KB Output is correct
7 Correct 20 ms 35560 KB Output is correct
8 Correct 20 ms 35584 KB Output is correct
9 Correct 19 ms 35508 KB Output is correct
10 Correct 17 ms 35472 KB Output is correct
11 Correct 17 ms 35616 KB Output is correct
12 Correct 19 ms 35500 KB Output is correct
13 Correct 23 ms 35480 KB Output is correct
14 Correct 18 ms 35508 KB Output is correct
15 Correct 19 ms 35540 KB Output is correct
16 Correct 18 ms 35540 KB Output is correct
17 Correct 20 ms 35540 KB Output is correct
18 Correct 18 ms 35540 KB Output is correct
19 Correct 18 ms 35540 KB Output is correct
20 Correct 18 ms 35556 KB Output is correct
21 Correct 18 ms 35528 KB Output is correct
22 Correct 18 ms 35512 KB Output is correct
23 Correct 18 ms 35540 KB Output is correct
24 Correct 17 ms 35540 KB Output is correct
25 Correct 17 ms 35496 KB Output is correct
26 Correct 21 ms 36392 KB Output is correct
27 Correct 19 ms 36284 KB Output is correct
28 Correct 21 ms 36564 KB Output is correct
29 Correct 20 ms 36460 KB Output is correct
30 Correct 19 ms 36320 KB Output is correct
31 Correct 18 ms 35560 KB Output is correct
32 Correct 20 ms 36408 KB Output is correct
33 Correct 18 ms 35540 KB Output is correct
34 Correct 21 ms 36284 KB Output is correct
35 Correct 20 ms 36460 KB Output is correct
36 Correct 18 ms 36308 KB Output is correct
37 Correct 20 ms 36300 KB Output is correct
38 Correct 19 ms 35548 KB Output is correct
39 Correct 21 ms 36340 KB Output is correct
40 Correct 21 ms 36336 KB Output is correct
41 Correct 20 ms 36304 KB Output is correct
42 Correct 20 ms 36308 KB Output is correct
43 Correct 19 ms 36464 KB Output is correct
44 Correct 18 ms 35540 KB Output is correct
45 Correct 21 ms 36284 KB Output is correct
46 Correct 20 ms 36356 KB Output is correct
47 Correct 18 ms 35556 KB Output is correct
48 Correct 20 ms 36304 KB Output is correct
49 Correct 19 ms 36436 KB Output is correct
50 Correct 20 ms 36564 KB Output is correct
51 Correct 20 ms 36336 KB Output is correct
52 Correct 21 ms 36340 KB Output is correct
53 Correct 21 ms 36324 KB Output is correct
54 Correct 20 ms 36344 KB Output is correct
55 Correct 19 ms 35540 KB Output is correct
56 Correct 118 ms 60832 KB Output is correct
57 Correct 157 ms 60508 KB Output is correct
58 Correct 21 ms 36336 KB Output is correct
59 Correct 20 ms 35496 KB Output is correct
60 Correct 19 ms 35540 KB Output is correct
61 Correct 133 ms 60456 KB Output is correct
62 Correct 20 ms 36308 KB Output is correct
63 Correct 190 ms 65740 KB Output is correct
64 Correct 152 ms 60684 KB Output is correct
65 Correct 20 ms 36308 KB Output is correct
66 Correct 163 ms 60512 KB Output is correct
67 Correct 21 ms 36308 KB Output is correct
68 Correct 20 ms 36352 KB Output is correct
69 Correct 115 ms 60696 KB Output is correct
70 Correct 21 ms 36412 KB Output is correct
71 Correct 139 ms 60308 KB Output is correct
72 Correct 173 ms 61932 KB Output is correct
73 Correct 18 ms 35540 KB Output is correct
74 Correct 170 ms 65724 KB Output is correct
75 Correct 183 ms 64208 KB Output is correct
76 Correct 20 ms 36264 KB Output is correct
77 Correct 21 ms 36316 KB Output is correct
78 Correct 113 ms 60896 KB Output is correct
79 Correct 113 ms 67000 KB Output is correct
80 Correct 20 ms 36340 KB Output is correct
81 Correct 19 ms 36308 KB Output is correct
82 Correct 20 ms 35684 KB Output is correct
83 Correct 18 ms 35524 KB Output is correct
84 Correct 19 ms 36296 KB Output is correct
85 Correct 159 ms 62048 KB Output is correct
86 Correct 22 ms 36308 KB Output is correct
87 Correct 132 ms 60772 KB Output is correct
88 Correct 18 ms 35580 KB Output is correct
89 Correct 153 ms 60352 KB Output is correct
90 Correct 147 ms 62268 KB Output is correct
91 Correct 142 ms 66660 KB Output is correct
92 Correct 115 ms 60728 KB Output is correct
93 Correct 21 ms 36340 KB Output is correct
94 Correct 19 ms 35556 KB Output is correct
95 Correct 121 ms 66136 KB Output is correct
96 Correct 171 ms 68696 KB Output is correct
97 Correct 21 ms 36328 KB Output is correct
98 Correct 18 ms 35604 KB Output is correct
99 Correct 116 ms 62400 KB Output is correct
100 Correct 20 ms 36308 KB Output is correct
101 Correct 147 ms 61196 KB Output is correct
102 Correct 172 ms 69160 KB Output is correct
103 Correct 20 ms 36436 KB Output is correct
104 Correct 21 ms 36564 KB Output is correct
105 Correct 19 ms 36308 KB Output is correct
106 Correct 21 ms 36272 KB Output is correct
107 Correct 20 ms 36320 KB Output is correct
108 Correct 686 ms 168708 KB Output is correct
109 Correct 1179 ms 171696 KB Output is correct
110 Correct 1090 ms 180540 KB Output is correct
111 Correct 1250 ms 203944 KB Output is correct
112 Correct 1162 ms 196448 KB Output is correct
113 Correct 745 ms 189012 KB Output is correct
114 Correct 865 ms 159988 KB Output is correct
115 Correct 876 ms 159732 KB Output is correct
116 Correct 1042 ms 165280 KB Output is correct
117 Correct 1022 ms 192496 KB Output is correct
118 Correct 838 ms 160648 KB Output is correct
119 Correct 1020 ms 192504 KB Output is correct
120 Correct 1228 ms 206200 KB Output is correct
121 Correct 1087 ms 192460 KB Output is correct
122 Correct 1006 ms 171616 KB Output is correct
123 Correct 737 ms 194664 KB Output is correct
124 Correct 1121 ms 178412 KB Output is correct