oj.uz

Submission #848320

# Submission time Handle Problem Language Result Execution time Memory
848320 2023-09-12T06:03:58 Z damwuan Mergers (JOI19_mergers) C++17
100 / 100
 723 ms 114032 KB 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define bit(n,i) ((n>>i)&1)
#define all(x) x.begin(),x.end()
//#pragma GCC optimize("O2,unroll-loops")
//#pragma GCC target("avx,avx2,bmi,bmi2,sse,sse2,sse3,ssse3,sse4,popcnt")
#define int long long
typedef long long ll;
typedef pair<int,int> pii;
typedef double ld;
typedef pair<ld,ld> pdd;
typedef pair<ll,ll> pll;
const ll maxn=5e5+5;
const ll offset=1e18;
const ll block_sz=317;
const ll inf=1e18;
const ll mod=1e9+7;
int n,k,in[maxn],par[maxn],up[maxn],Time,deg[maxn];
vector<int> adj[maxn],L[maxn];
set<pii> S;
set<pii>::iterator x;
//bool vis[maxn];
int Find(int u)
{
    return par[u]<0?u:par[u]=Find(par[u]);
}
bool Union(int u,int v)
{
    if ((u=Find(u))==(v=Find(v)))
    {
        return 0;
    }
    //if (par[u]>par[v]) swap(u,v);
    par[u]+=par[v];
    par[v]=u;
    return 1;
}
void dfs(int u,int pre)
{
    up[u]=pre;
    in[u]=in[pre]+1;
    for(int v:adj[u])
    {
        if (v==pre) continue;
        dfs(v,u);
    }
}
void sol()
{
    cin >> n>> k;
    for1(i,1,n-1)
    {
        int u,v;cin >>u>>v;
        adj[u].pb(v);
        adj[v].pb(u);
    }
    dfs(1,1);
    for1(i,1,n)
    {
        par[i]=-1;
        int g;cin >> g;L[g].pb(i);
    }
    for1(i,1,k)
    {
        S.clear();
        for (int v:L[i])
        {
            S.insert({in[Find(v)],Find(v)});
        }
        while(S.size()>1)
        {
            x=(--S.end());
            S.erase(x);
            Union(up[x->se],x-> se);
            S.insert({in[Find(x->se)],Find(x->se)});
        }
    }
//    for1(i,1,n) cout << par[i]<<' ';
//    cout << '\n';
    int cnt=0;
    for1(u,1,n)
    {
        int x=0;
        for(int v: adj[u])
        {
            if (Find(u)!=Find(v))
            {
                //if (u==3) cout << v<<'\n';
//                x++;
                deg[Find(u)]++;
            }
        }
    }
    for1(i,1,n) if (deg[i]==1) cnt++;
    cout << (cnt+1)/2;



}

int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
//    freopen("GROUPDIV.inp","r",stdin);
//    freopen("GROUPDIV.out","w",stdout);

    int t=1;//cin >> t;
    while (t--)
    {
        sol();
    }
}
/*

3 1
12345678
?11
*/

Compilation message

mergers.cpp: In function 'void sol()':
mergers.cpp:90:13: warning: unused variable 'x' [-Wunused-variable]
   90 |         int x=0;
      |             ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 7 ms 31324 KB Output is correct
3 Correct 6 ms 31324 KB Output is correct
4 Correct 6 ms 31348 KB Output is correct
5 Correct 6 ms 31324 KB Output is correct
6 Correct 6 ms 31324 KB Output is correct
7 Correct 7 ms 31320 KB Output is correct
8 Correct 6 ms 31324 KB Output is correct
9 Correct 6 ms 31412 KB Output is correct
10 Correct 6 ms 31140 KB Output is correct
11 Correct 6 ms 31320 KB Output is correct
12 Correct 6 ms 31324 KB Output is correct
13 Correct 6 ms 31324 KB Output is correct
14 Correct 6 ms 31324 KB Output is correct
15 Correct 6 ms 31328 KB Output is correct
16 Correct 6 ms 31404 KB Output is correct
17 Correct 6 ms 31412 KB Output is correct
18 Correct 6 ms 31324 KB Output is correct
19 Correct 6 ms 31324 KB Output is correct
20 Correct 6 ms 31324 KB Output is correct
21 Correct 7 ms 31404 KB Output is correct
22 Correct 6 ms 31408 KB Output is correct
23 Correct 6 ms 31520 KB Output is correct
24 Correct 7 ms 31404 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 7 ms 31324 KB Output is correct
3 Correct 6 ms 31324 KB Output is correct
4 Correct 6 ms 31348 KB Output is correct
5 Correct 6 ms 31324 KB Output is correct
6 Correct 6 ms 31324 KB Output is correct
7 Correct 7 ms 31320 KB Output is correct
8 Correct 6 ms 31324 KB Output is correct
9 Correct 6 ms 31412 KB Output is correct
10 Correct 6 ms 31140 KB Output is correct
11 Correct 6 ms 31320 KB Output is correct
12 Correct 6 ms 31324 KB Output is correct
13 Correct 6 ms 31324 KB Output is correct
14 Correct 6 ms 31324 KB Output is correct
15 Correct 6 ms 31328 KB Output is correct
16 Correct 6 ms 31404 KB Output is correct
17 Correct 6 ms 31412 KB Output is correct
18 Correct 6 ms 31324 KB Output is correct
19 Correct 6 ms 31324 KB Output is correct
20 Correct 6 ms 31324 KB Output is correct
21 Correct 7 ms 31404 KB Output is correct
22 Correct 6 ms 31408 KB Output is correct
23 Correct 6 ms 31520 KB Output is correct
24 Correct 7 ms 31404 KB Output is correct
25 Correct 6 ms 31172 KB Output is correct
26 Correct 8 ms 31580 KB Output is correct
27 Correct 8 ms 31508 KB Output is correct
28 Correct 8 ms 31580 KB Output is correct
29 Correct 8 ms 31832 KB Output is correct
30 Correct 8 ms 31408 KB Output is correct
31 Correct 6 ms 31324 KB Output is correct
32 Correct 7 ms 31668 KB Output is correct
33 Correct 6 ms 31324 KB Output is correct
34 Correct 7 ms 31580 KB Output is correct
35 Correct 7 ms 31580 KB Output is correct
36 Correct 8 ms 31580 KB Output is correct
37 Correct 8 ms 31580 KB Output is correct
38 Correct 6 ms 31324 KB Output is correct
39 Correct 9 ms 31416 KB Output is correct
40 Correct 8 ms 31580 KB Output is correct
41 Correct 8 ms 31640 KB Output is correct
42 Correct 7 ms 31580 KB Output is correct
43 Correct 8 ms 31896 KB Output is correct
44 Correct 7 ms 31324 KB Output is correct
45 Correct 9 ms 31580 KB Output is correct
46 Correct 8 ms 31580 KB Output is correct
47 Correct 7 ms 31324 KB Output is correct
48 Correct 8 ms 31420 KB Output is correct
49 Correct 7 ms 31580 KB Output is correct
50 Correct 7 ms 31580 KB Output is correct
51 Correct 7 ms 31580 KB Output is correct
52 Correct 8 ms 31440 KB Output is correct
53 Correct 7 ms 31580 KB Output is correct
54 Correct 7 ms 31832 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 7 ms 31324 KB Output is correct
3 Correct 6 ms 31324 KB Output is correct
4 Correct 6 ms 31348 KB Output is correct
5 Correct 6 ms 31324 KB Output is correct
6 Correct 6 ms 31324 KB Output is correct
7 Correct 7 ms 31320 KB Output is correct
8 Correct 6 ms 31324 KB Output is correct
9 Correct 6 ms 31412 KB Output is correct
10 Correct 6 ms 31140 KB Output is correct
11 Correct 6 ms 31320 KB Output is correct
12 Correct 6 ms 31324 KB Output is correct
13 Correct 6 ms 31324 KB Output is correct
14 Correct 6 ms 31324 KB Output is correct
15 Correct 6 ms 31328 KB Output is correct
16 Correct 6 ms 31404 KB Output is correct
17 Correct 6 ms 31412 KB Output is correct
18 Correct 6 ms 31324 KB Output is correct
19 Correct 6 ms 31324 KB Output is correct
20 Correct 6 ms 31324 KB Output is correct
21 Correct 7 ms 31404 KB Output is correct
22 Correct 6 ms 31408 KB Output is correct
23 Correct 6 ms 31520 KB Output is correct
24 Correct 7 ms 31404 KB Output is correct
25 Correct 6 ms 31320 KB Output is correct
26 Correct 42 ms 37788 KB Output is correct
27 Correct 58 ms 37456 KB Output is correct
28 Correct 7 ms 31600 KB Output is correct
29 Correct 7 ms 31332 KB Output is correct
30 Correct 6 ms 31324 KB Output is correct
31 Correct 61 ms 37548 KB Output is correct
32 Correct 7 ms 31580 KB Output is correct
33 Correct 50 ms 41300 KB Output is correct
34 Correct 61 ms 37644 KB Output is correct
35 Correct 8 ms 31580 KB Output is correct
36 Correct 65 ms 37664 KB Output is correct
37 Correct 8 ms 31632 KB Output is correct
38 Correct 7 ms 31584 KB Output is correct
39 Correct 45 ms 37708 KB Output is correct
40 Correct 9 ms 31668 KB Output is correct
41 Correct 84 ms 43492 KB Output is correct
42 Correct 49 ms 38228 KB Output is correct
43 Correct 6 ms 31324 KB Output is correct
44 Correct 76 ms 47416 KB Output is correct
45 Correct 61 ms 40532 KB Output is correct
46 Correct 7 ms 31580 KB Output is correct
47 Correct 7 ms 31580 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 36368 KB Output is correct
2 Correct 55 ms 38352 KB Output is correct
3 Correct 7 ms 31580 KB Output is correct
4 Correct 7 ms 31512 KB Output is correct
5 Correct 6 ms 31320 KB Output is correct
6 Correct 8 ms 31320 KB Output is correct
7 Correct 7 ms 31576 KB Output is correct
8 Correct 61 ms 38636 KB Output is correct
9 Correct 7 ms 31580 KB Output is correct
10 Correct 59 ms 37716 KB Output is correct
11 Correct 6 ms 31320 KB Output is correct
12 Correct 67 ms 37260 KB Output is correct
13 Correct 65 ms 38568 KB Output is correct
14 Correct 53 ms 39764 KB Output is correct
15 Correct 45 ms 37700 KB Output is correct
16 Correct 8 ms 31832 KB Output is correct
17 Correct 6 ms 31368 KB Output is correct
18 Correct 59 ms 39680 KB Output is correct
19 Correct 56 ms 41572 KB Output is correct
20 Correct 7 ms 31580 KB Output is correct
21 Correct 6 ms 31324 KB Output is correct
22 Correct 47 ms 38676 KB Output is correct
23 Correct 8 ms 31580 KB Output is correct
24 Correct 57 ms 37980 KB Output is correct
25 Correct 62 ms 41808 KB Output is correct
26 Correct 8 ms 31580 KB Output is correct
27 Correct 7 ms 31580 KB Output is correct
28 Correct 7 ms 31580 KB Output is correct
29 Correct 7 ms 31576 KB Output is correct
30 Correct 8 ms 31580 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 7 ms 31324 KB Output is correct
3 Correct 6 ms 31324 KB Output is correct
4 Correct 6 ms 31348 KB Output is correct
5 Correct 6 ms 31324 KB Output is correct
6 Correct 6 ms 31324 KB Output is correct
7 Correct 7 ms 31320 KB Output is correct
8 Correct 6 ms 31324 KB Output is correct
9 Correct 6 ms 31412 KB Output is correct
10 Correct 6 ms 31140 KB Output is correct
11 Correct 6 ms 31320 KB Output is correct
12 Correct 6 ms 31324 KB Output is correct
13 Correct 6 ms 31324 KB Output is correct
14 Correct 6 ms 31324 KB Output is correct
15 Correct 6 ms 31328 KB Output is correct
16 Correct 6 ms 31404 KB Output is correct
17 Correct 6 ms 31412 KB Output is correct
18 Correct 6 ms 31324 KB Output is correct
19 Correct 6 ms 31324 KB Output is correct
20 Correct 6 ms 31324 KB Output is correct
21 Correct 7 ms 31404 KB Output is correct
22 Correct 6 ms 31408 KB Output is correct
23 Correct 6 ms 31520 KB Output is correct
24 Correct 7 ms 31404 KB Output is correct
25 Correct 6 ms 31172 KB Output is correct
26 Correct 8 ms 31580 KB Output is correct
27 Correct 8 ms 31508 KB Output is correct
28 Correct 8 ms 31580 KB Output is correct
29 Correct 8 ms 31832 KB Output is correct
30 Correct 8 ms 31408 KB Output is correct
31 Correct 6 ms 31324 KB Output is correct
32 Correct 7 ms 31668 KB Output is correct
33 Correct 6 ms 31324 KB Output is correct
34 Correct 7 ms 31580 KB Output is correct
35 Correct 7 ms 31580 KB Output is correct
36 Correct 8 ms 31580 KB Output is correct
37 Correct 8 ms 31580 KB Output is correct
38 Correct 6 ms 31324 KB Output is correct
39 Correct 9 ms 31416 KB Output is correct
40 Correct 8 ms 31580 KB Output is correct
41 Correct 8 ms 31640 KB Output is correct
42 Correct 7 ms 31580 KB Output is correct
43 Correct 8 ms 31896 KB Output is correct
44 Correct 7 ms 31324 KB Output is correct
45 Correct 9 ms 31580 KB Output is correct
46 Correct 8 ms 31580 KB Output is correct
47 Correct 7 ms 31324 KB Output is correct
48 Correct 8 ms 31420 KB Output is correct
49 Correct 7 ms 31580 KB Output is correct
50 Correct 7 ms 31580 KB Output is correct
51 Correct 7 ms 31580 KB Output is correct
52 Correct 8 ms 31440 KB Output is correct
53 Correct 7 ms 31580 KB Output is correct
54 Correct 7 ms 31832 KB Output is correct
55 Correct 6 ms 31320 KB Output is correct
56 Correct 42 ms 37788 KB Output is correct
57 Correct 58 ms 37456 KB Output is correct
58 Correct 7 ms 31600 KB Output is correct
59 Correct 7 ms 31332 KB Output is correct
60 Correct 6 ms 31324 KB Output is correct
61 Correct 61 ms 37548 KB Output is correct
62 Correct 7 ms 31580 KB Output is correct
63 Correct 50 ms 41300 KB Output is correct
64 Correct 61 ms 37644 KB Output is correct
65 Correct 8 ms 31580 KB Output is correct
66 Correct 65 ms 37664 KB Output is correct
67 Correct 8 ms 31632 KB Output is correct
68 Correct 7 ms 31584 KB Output is correct
69 Correct 45 ms 37708 KB Output is correct
70 Correct 9 ms 31668 KB Output is correct
71 Correct 84 ms 43492 KB Output is correct
72 Correct 49 ms 38228 KB Output is correct
73 Correct 6 ms 31324 KB Output is correct
74 Correct 76 ms 47416 KB Output is correct
75 Correct 61 ms 40532 KB Output is correct
76 Correct 7 ms 31580 KB Output is correct
77 Correct 7 ms 31580 KB Output is correct
78 Correct 41 ms 36368 KB Output is correct
79 Correct 55 ms 38352 KB Output is correct
80 Correct 7 ms 31580 KB Output is correct
81 Correct 7 ms 31512 KB Output is correct
82 Correct 6 ms 31320 KB Output is correct
83 Correct 8 ms 31320 KB Output is correct
84 Correct 7 ms 31576 KB Output is correct
85 Correct 61 ms 38636 KB Output is correct
86 Correct 7 ms 31580 KB Output is correct
87 Correct 59 ms 37716 KB Output is correct
88 Correct 6 ms 31320 KB Output is correct
89 Correct 67 ms 37260 KB Output is correct
90 Correct 65 ms 38568 KB Output is correct
91 Correct 53 ms 39764 KB Output is correct
92 Correct 45 ms 37700 KB Output is correct
93 Correct 8 ms 31832 KB Output is correct
94 Correct 6 ms 31368 KB Output is correct
95 Correct 59 ms 39680 KB Output is correct
96 Correct 56 ms 41572 KB Output is correct
97 Correct 7 ms 31580 KB Output is correct
98 Correct 6 ms 31324 KB Output is correct
99 Correct 47 ms 38676 KB Output is correct
100 Correct 8 ms 31580 KB Output is correct
101 Correct 57 ms 37980 KB Output is correct
102 Correct 62 ms 41808 KB Output is correct
103 Correct 8 ms 31580 KB Output is correct
104 Correct 7 ms 31580 KB Output is correct
105 Correct 7 ms 31580 KB Output is correct
106 Correct 7 ms 31576 KB Output is correct
107 Correct 8 ms 31580 KB Output is correct
108 Correct 332 ms 77716 KB Output is correct
109 Correct 649 ms 91328 KB Output is correct
110 Correct 723 ms 114032 KB Output is correct
111 Correct 505 ms 94844 KB Output is correct
112 Correct 571 ms 93008 KB Output is correct
113 Correct 344 ms 83268 KB Output is correct
114 Correct 580 ms 85600 KB Output is correct
115 Correct 659 ms 99088 KB Output is correct
116 Correct 413 ms 75088 KB Output is correct
117 Correct 528 ms 83928 KB Output is correct
118 Correct 413 ms 72480 KB Output is correct
119 Correct 501 ms 83796 KB Output is correct
120 Correct 537 ms 93580 KB Output is correct
121 Correct 524 ms 84048 KB Output is correct
122 Correct 521 ms 78280 KB Output is correct
123 Correct 365 ms 84916 KB Output is correct
124 Correct 576 ms 80176 KB Output is correct