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Submission #575068

# Submission time Handle Problem Language Result Execution time Memory
575068 2022-06-09T15:15:07 Z MohammadAghil Mergers (JOI19_mergers) C++14
100 / 100
 1104 ms 121616 KB 
      #include <bits/stdc++.h>
  #pragma GCC optimize ("Ofast,unroll-loops")
#pragma GCC target ("avx2")
    using namespace std;
  typedef long long ll;
   typedef pair<int, int> pp;
    #define er(args ...) cerr << __LINE__ << ": ", err(new istringstream(string(#args)), args), cerr << endl
      #define per(i,r,l) for(int i = (r); i >= (l); i--)
        #define rep(i,l,r) for(int i = (l); i < (r); i++)
           #define all(x) x.begin(), x.end()
              #define sz(x) (int)(x).size()
                  #define pb push_back
                      #define ss second
                           #define ff first
                                   void err(istringstream *iss){}template<typename T,typename ...Args> void err(istringstream *iss,const T &_val, const Args&...args){string _name;*iss>>_name;if(_name.back()==',')_name.pop_back();cerr<<_name<<" = "<<_val<<", ",err(iss,args...);}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll mod = 1e9 + 7, maxn = 5e5+5, lg = 20, inf = ll(1e9) + 5;
ll pw(ll a,ll b,ll md=mod){if(!b)return 1;ll k=pw(a,b>>1ll);return k*k%md*(b&1ll?a:1)%md;}

int st[maxn], par[maxn][lg], h[maxn], vl[maxn];
vector<int> adj[maxn], ct[maxn];

void dfs(int r, int p){
     par[r][0] = p;
     rep(i,1,lg) par[r][i] = par[par[r][i-1]][i-1];
     for(int c: adj[r]) if(c - p) h[c] = h[r] + 1, dfs(c, r);
}

int lca(int u, int v){
     if(h[u] > h[v]) swap(u, v);
     per(i,lg-1,0) if(h[par[v][i]] >= h[u]) v = par[v][i];
     if(u == v) return u;
     per(i,lg-1,0) if(par[u][i] - par[v][i]) u = par[u][i], v = par[v][i];
     return par[u][0];
}

int dfs2(int r, int p){
     int res = 0;
     for(int c: adj[r]) if(c - p){
          res += dfs2(c, r);
          st[r] += st[c];
     }
     if(st[r] || !r) return vl[r] = -1, res;
     vl[r] = res;
     return res + 1;
}

int main(){
     cin.tie(0) -> sync_with_stdio(0);
     int n, k; cin >> n >> k;
     rep(i,1,n){
          int u, v; cin >> u >> v; u--, v--;
          adj[u].pb(v), adj[v].pb(u);
     } dfs(0, 0);
     rep(i,0,n){
          int t; cin >> t; t--;
          ct[t].pb(i);
     }
     rep(i,0,k){
          int lc = ct[i].back();
          for(int c: ct[i]) lc = lca(lc, c);
          for(int c: ct[i]) st[c]++, st[lc]--;
     }
     int ans = 1, tot = dfs2(0, 0); er(tot);
     rep(i,0,n) if(vl[i] + 1 && (vl[i] == tot-1 || vl[i] == 0)) ans++;
     cout << ans/2 << '\n';
     return 0; 
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 13 ms 23816 KB Output is correct
3 Correct 12 ms 23852 KB Output is correct
4 Correct 12 ms 23836 KB Output is correct
5 Correct 15 ms 23836 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 12 ms 23752 KB Output is correct
10 Correct 12 ms 23772 KB Output is correct
11 Correct 13 ms 23812 KB Output is correct
12 Correct 14 ms 23812 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23768 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23724 KB Output is correct
17 Correct 13 ms 23892 KB Output is correct
18 Correct 12 ms 23764 KB Output is correct
19 Correct 12 ms 23744 KB Output is correct
20 Correct 13 ms 23788 KB Output is correct
21 Correct 12 ms 23812 KB Output is correct
22 Correct 12 ms 23764 KB Output is correct
23 Correct 13 ms 23816 KB Output is correct
24 Correct 15 ms 23820 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 13 ms 23816 KB Output is correct
3 Correct 12 ms 23852 KB Output is correct
4 Correct 12 ms 23836 KB Output is correct
5 Correct 15 ms 23836 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 12 ms 23752 KB Output is correct
10 Correct 12 ms 23772 KB Output is correct
11 Correct 13 ms 23812 KB Output is correct
12 Correct 14 ms 23812 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23768 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23724 KB Output is correct
17 Correct 13 ms 23892 KB Output is correct
18 Correct 12 ms 23764 KB Output is correct
19 Correct 12 ms 23744 KB Output is correct
20 Correct 13 ms 23788 KB Output is correct
21 Correct 12 ms 23812 KB Output is correct
22 Correct 12 ms 23764 KB Output is correct
23 Correct 13 ms 23816 KB Output is correct
24 Correct 15 ms 23820 KB Output is correct
25 Correct 12 ms 23812 KB Output is correct
26 Correct 17 ms 24296 KB Output is correct
27 Correct 14 ms 24240 KB Output is correct
28 Correct 14 ms 24340 KB Output is correct
29 Correct 15 ms 24276 KB Output is correct
30 Correct 15 ms 24276 KB Output is correct
31 Correct 14 ms 23764 KB Output is correct
32 Correct 14 ms 24404 KB Output is correct
33 Correct 14 ms 23764 KB Output is correct
34 Correct 14 ms 24276 KB Output is correct
35 Correct 14 ms 24344 KB Output is correct
36 Correct 14 ms 24212 KB Output is correct
37 Correct 15 ms 24276 KB Output is correct
38 Correct 13 ms 23816 KB Output is correct
39 Correct 17 ms 24212 KB Output is correct
40 Correct 15 ms 24216 KB Output is correct
41 Correct 17 ms 24276 KB Output is correct
42 Correct 14 ms 24276 KB Output is correct
43 Correct 15 ms 24348 KB Output is correct
44 Correct 14 ms 23764 KB Output is correct
45 Correct 15 ms 24276 KB Output is correct
46 Correct 15 ms 24168 KB Output is correct
47 Correct 13 ms 24020 KB Output is correct
48 Correct 14 ms 24148 KB Output is correct
49 Correct 15 ms 24300 KB Output is correct
50 Correct 15 ms 24276 KB Output is correct
51 Correct 16 ms 24224 KB Output is correct
52 Correct 16 ms 24276 KB Output is correct
53 Correct 15 ms 24276 KB Output is correct
54 Correct 15 ms 24208 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 13 ms 23816 KB Output is correct
3 Correct 12 ms 23852 KB Output is correct
4 Correct 12 ms 23836 KB Output is correct
5 Correct 15 ms 23836 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 12 ms 23752 KB Output is correct
10 Correct 12 ms 23772 KB Output is correct
11 Correct 13 ms 23812 KB Output is correct
12 Correct 14 ms 23812 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23768 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23724 KB Output is correct
17 Correct 13 ms 23892 KB Output is correct
18 Correct 12 ms 23764 KB Output is correct
19 Correct 12 ms 23744 KB Output is correct
20 Correct 13 ms 23788 KB Output is correct
21 Correct 12 ms 23812 KB Output is correct
22 Correct 12 ms 23764 KB Output is correct
23 Correct 13 ms 23816 KB Output is correct
24 Correct 15 ms 23820 KB Output is correct
25 Correct 12 ms 23764 KB Output is correct
26 Correct 72 ms 38376 KB Output is correct
27 Correct 95 ms 38020 KB Output is correct
28 Correct 15 ms 24192 KB Output is correct
29 Correct 13 ms 23840 KB Output is correct
30 Correct 13 ms 23812 KB Output is correct
31 Correct 139 ms 37980 KB Output is correct
32 Correct 14 ms 24272 KB Output is correct
33 Correct 114 ms 41420 KB Output is correct
34 Correct 92 ms 37972 KB Output is correct
35 Correct 14 ms 24152 KB Output is correct
36 Correct 115 ms 38212 KB Output is correct
37 Correct 14 ms 24212 KB Output is correct
38 Correct 17 ms 24260 KB Output is correct
39 Correct 87 ms 38276 KB Output is correct
40 Correct 15 ms 24384 KB Output is correct
41 Correct 107 ms 37944 KB Output is correct
42 Correct 119 ms 39096 KB Output is correct
43 Correct 12 ms 23764 KB Output is correct
44 Correct 111 ms 41404 KB Output is correct
45 Correct 124 ms 39784 KB Output is correct
46 Correct 14 ms 24212 KB Output is correct
47 Correct 15 ms 24204 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 36928 KB Output is correct
2 Correct 108 ms 39480 KB Output is correct
3 Correct 16 ms 24148 KB Output is correct
4 Correct 16 ms 24204 KB Output is correct
5 Correct 15 ms 23740 KB Output is correct
6 Correct 12 ms 23740 KB Output is correct
7 Correct 14 ms 24276 KB Output is correct
8 Correct 116 ms 39344 KB Output is correct
9 Correct 14 ms 24148 KB Output is correct
10 Correct 105 ms 38160 KB Output is correct
11 Correct 12 ms 23764 KB Output is correct
12 Correct 130 ms 38088 KB Output is correct
13 Correct 114 ms 39164 KB Output is correct
14 Correct 120 ms 40852 KB Output is correct
15 Correct 75 ms 38272 KB Output is correct
16 Correct 13 ms 24276 KB Output is correct
17 Correct 14 ms 23848 KB Output is correct
18 Correct 120 ms 40836 KB Output is correct
19 Correct 162 ms 42792 KB Output is correct
20 Correct 15 ms 24204 KB Output is correct
21 Correct 13 ms 23856 KB Output is correct
22 Correct 89 ms 39556 KB Output is correct
23 Correct 14 ms 24212 KB Output is correct
24 Correct 114 ms 38508 KB Output is correct
25 Correct 154 ms 42152 KB Output is correct
26 Correct 15 ms 24280 KB Output is correct
27 Correct 14 ms 24288 KB Output is correct
28 Correct 14 ms 24208 KB Output is correct
29 Correct 14 ms 24212 KB Output is correct
30 Correct 15 ms 24276 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23764 KB Output is correct
2 Correct 13 ms 23816 KB Output is correct
3 Correct 12 ms 23852 KB Output is correct
4 Correct 12 ms 23836 KB Output is correct
5 Correct 15 ms 23836 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 12 ms 23764 KB Output is correct
8 Correct 13 ms 23764 KB Output is correct
9 Correct 12 ms 23752 KB Output is correct
10 Correct 12 ms 23772 KB Output is correct
11 Correct 13 ms 23812 KB Output is correct
12 Correct 14 ms 23812 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23768 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23724 KB Output is correct
17 Correct 13 ms 23892 KB Output is correct
18 Correct 12 ms 23764 KB Output is correct
19 Correct 12 ms 23744 KB Output is correct
20 Correct 13 ms 23788 KB Output is correct
21 Correct 12 ms 23812 KB Output is correct
22 Correct 12 ms 23764 KB Output is correct
23 Correct 13 ms 23816 KB Output is correct
24 Correct 15 ms 23820 KB Output is correct
25 Correct 12 ms 23812 KB Output is correct
26 Correct 17 ms 24296 KB Output is correct
27 Correct 14 ms 24240 KB Output is correct
28 Correct 14 ms 24340 KB Output is correct
29 Correct 15 ms 24276 KB Output is correct
30 Correct 15 ms 24276 KB Output is correct
31 Correct 14 ms 23764 KB Output is correct
32 Correct 14 ms 24404 KB Output is correct
33 Correct 14 ms 23764 KB Output is correct
34 Correct 14 ms 24276 KB Output is correct
35 Correct 14 ms 24344 KB Output is correct
36 Correct 14 ms 24212 KB Output is correct
37 Correct 15 ms 24276 KB Output is correct
38 Correct 13 ms 23816 KB Output is correct
39 Correct 17 ms 24212 KB Output is correct
40 Correct 15 ms 24216 KB Output is correct
41 Correct 17 ms 24276 KB Output is correct
42 Correct 14 ms 24276 KB Output is correct
43 Correct 15 ms 24348 KB Output is correct
44 Correct 14 ms 23764 KB Output is correct
45 Correct 15 ms 24276 KB Output is correct
46 Correct 15 ms 24168 KB Output is correct
47 Correct 13 ms 24020 KB Output is correct
48 Correct 14 ms 24148 KB Output is correct
49 Correct 15 ms 24300 KB Output is correct
50 Correct 15 ms 24276 KB Output is correct
51 Correct 16 ms 24224 KB Output is correct
52 Correct 16 ms 24276 KB Output is correct
53 Correct 15 ms 24276 KB Output is correct
54 Correct 15 ms 24208 KB Output is correct
55 Correct 12 ms 23764 KB Output is correct
56 Correct 72 ms 38376 KB Output is correct
57 Correct 95 ms 38020 KB Output is correct
58 Correct 15 ms 24192 KB Output is correct
59 Correct 13 ms 23840 KB Output is correct
60 Correct 13 ms 23812 KB Output is correct
61 Correct 139 ms 37980 KB Output is correct
62 Correct 14 ms 24272 KB Output is correct
63 Correct 114 ms 41420 KB Output is correct
64 Correct 92 ms 37972 KB Output is correct
65 Correct 14 ms 24152 KB Output is correct
66 Correct 115 ms 38212 KB Output is correct
67 Correct 14 ms 24212 KB Output is correct
68 Correct 17 ms 24260 KB Output is correct
69 Correct 87 ms 38276 KB Output is correct
70 Correct 15 ms 24384 KB Output is correct
71 Correct 107 ms 37944 KB Output is correct
72 Correct 119 ms 39096 KB Output is correct
73 Correct 12 ms 23764 KB Output is correct
74 Correct 111 ms 41404 KB Output is correct
75 Correct 124 ms 39784 KB Output is correct
76 Correct 14 ms 24212 KB Output is correct
77 Correct 15 ms 24204 KB Output is correct
78 Correct 74 ms 36928 KB Output is correct
79 Correct 108 ms 39480 KB Output is correct
80 Correct 16 ms 24148 KB Output is correct
81 Correct 16 ms 24204 KB Output is correct
82 Correct 15 ms 23740 KB Output is correct
83 Correct 12 ms 23740 KB Output is correct
84 Correct 14 ms 24276 KB Output is correct
85 Correct 116 ms 39344 KB Output is correct
86 Correct 14 ms 24148 KB Output is correct
87 Correct 105 ms 38160 KB Output is correct
88 Correct 12 ms 23764 KB Output is correct
89 Correct 130 ms 38088 KB Output is correct
90 Correct 114 ms 39164 KB Output is correct
91 Correct 120 ms 40852 KB Output is correct
92 Correct 75 ms 38272 KB Output is correct
93 Correct 13 ms 24276 KB Output is correct
94 Correct 14 ms 23848 KB Output is correct
95 Correct 120 ms 40836 KB Output is correct
96 Correct 162 ms 42792 KB Output is correct
97 Correct 15 ms 24204 KB Output is correct
98 Correct 13 ms 23856 KB Output is correct
99 Correct 89 ms 39556 KB Output is correct
100 Correct 14 ms 24212 KB Output is correct
101 Correct 114 ms 38508 KB Output is correct
102 Correct 154 ms 42152 KB Output is correct
103 Correct 15 ms 24280 KB Output is correct
104 Correct 14 ms 24288 KB Output is correct
105 Correct 14 ms 24208 KB Output is correct
106 Correct 14 ms 24212 KB Output is correct
107 Correct 15 ms 24276 KB Output is correct
108 Correct 574 ms 102804 KB Output is correct
109 Correct 872 ms 103332 KB Output is correct
110 Correct 802 ms 108612 KB Output is correct
111 Correct 1104 ms 121616 KB Output is correct
112 Correct 1094 ms 116788 KB Output is correct
113 Correct 631 ms 110572 KB Output is correct
114 Correct 616 ms 94820 KB Output is correct
115 Correct 619 ms 94836 KB Output is correct
116 Correct 760 ms 99380 KB Output is correct
117 Correct 859 ms 110584 KB Output is correct
118 Correct 625 ms 95312 KB Output is correct
119 Correct 903 ms 110612 KB Output is correct
120 Correct 1085 ms 117256 KB Output is correct
121 Correct 903 ms 110844 KB Output is correct
122 Correct 869 ms 104436 KB Output is correct
123 Correct 626 ms 112044 KB Output is correct
124 Correct 1047 ms 108628 KB Output is correct