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Submission #575069

# Submission time Handle Problem Language Result Execution time Memory
575069 2022-06-09T15:17:01 Z MohammadAghil Mergers (JOI19_mergers) C++14
100 / 100
 1167 ms 124504 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); 
     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 13 ms 23764 KB Output is correct
2 Correct 12 ms 23764 KB Output is correct
3 Correct 13 ms 23764 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 14 ms 23764 KB Output is correct
7 Correct 14 ms 23764 KB Output is correct
8 Correct 13 ms 23780 KB Output is correct
9 Correct 12 ms 23764 KB Output is correct
10 Correct 15 ms 23756 KB Output is correct
11 Correct 16 ms 23820 KB Output is correct
12 Correct 13 ms 23768 KB Output is correct
13 Correct 17 ms 23824 KB Output is correct
14 Correct 19 ms 23764 KB Output is correct
15 Correct 15 ms 23820 KB Output is correct
16 Correct 14 ms 23812 KB Output is correct
17 Correct 14 ms 23764 KB Output is correct
18 Correct 12 ms 23812 KB Output is correct
19 Correct 12 ms 23732 KB Output is correct
20 Correct 12 ms 23764 KB Output is correct
21 Correct 14 ms 23764 KB Output is correct
22 Correct 19 ms 23792 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 14 ms 23820 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 12 ms 23764 KB Output is correct
3 Correct 13 ms 23764 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 14 ms 23764 KB Output is correct
7 Correct 14 ms 23764 KB Output is correct
8 Correct 13 ms 23780 KB Output is correct
9 Correct 12 ms 23764 KB Output is correct
10 Correct 15 ms 23756 KB Output is correct
11 Correct 16 ms 23820 KB Output is correct
12 Correct 13 ms 23768 KB Output is correct
13 Correct 17 ms 23824 KB Output is correct
14 Correct 19 ms 23764 KB Output is correct
15 Correct 15 ms 23820 KB Output is correct
16 Correct 14 ms 23812 KB Output is correct
17 Correct 14 ms 23764 KB Output is correct
18 Correct 12 ms 23812 KB Output is correct
19 Correct 12 ms 23732 KB Output is correct
20 Correct 12 ms 23764 KB Output is correct
21 Correct 14 ms 23764 KB Output is correct
22 Correct 19 ms 23792 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 14 ms 23820 KB Output is correct
25 Correct 13 ms 23740 KB Output is correct
26 Correct 15 ms 24276 KB Output is correct
27 Correct 18 ms 24212 KB Output is correct
28 Correct 21 ms 24340 KB Output is correct
29 Correct 17 ms 24276 KB Output is correct
30 Correct 16 ms 24200 KB Output is correct
31 Correct 19 ms 23836 KB Output is correct
32 Correct 15 ms 24404 KB Output is correct
33 Correct 13 ms 23816 KB Output is correct
34 Correct 15 ms 24244 KB Output is correct
35 Correct 19 ms 24244 KB Output is correct
36 Correct 17 ms 24140 KB Output is correct
37 Correct 16 ms 24276 KB Output is correct
38 Correct 18 ms 23764 KB Output is correct
39 Correct 16 ms 24276 KB Output is correct
40 Correct 17 ms 24148 KB Output is correct
41 Correct 14 ms 24212 KB Output is correct
42 Correct 14 ms 24276 KB Output is correct
43 Correct 16 ms 24432 KB Output is correct
44 Correct 16 ms 23816 KB Output is correct
45 Correct 17 ms 24340 KB Output is correct
46 Correct 17 ms 24212 KB Output is correct
47 Correct 15 ms 23816 KB Output is correct
48 Correct 19 ms 24204 KB Output is correct
49 Correct 19 ms 24336 KB Output is correct
50 Correct 16 ms 24328 KB Output is correct
51 Correct 18 ms 24148 KB Output is correct
52 Correct 16 ms 24212 KB Output is correct
53 Correct 19 ms 24212 KB Output is correct
54 Correct 17 ms 24156 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 12 ms 23764 KB Output is correct
3 Correct 13 ms 23764 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 14 ms 23764 KB Output is correct
7 Correct 14 ms 23764 KB Output is correct
8 Correct 13 ms 23780 KB Output is correct
9 Correct 12 ms 23764 KB Output is correct
10 Correct 15 ms 23756 KB Output is correct
11 Correct 16 ms 23820 KB Output is correct
12 Correct 13 ms 23768 KB Output is correct
13 Correct 17 ms 23824 KB Output is correct
14 Correct 19 ms 23764 KB Output is correct
15 Correct 15 ms 23820 KB Output is correct
16 Correct 14 ms 23812 KB Output is correct
17 Correct 14 ms 23764 KB Output is correct
18 Correct 12 ms 23812 KB Output is correct
19 Correct 12 ms 23732 KB Output is correct
20 Correct 12 ms 23764 KB Output is correct
21 Correct 14 ms 23764 KB Output is correct
22 Correct 19 ms 23792 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 14 ms 23820 KB Output is correct
25 Correct 16 ms 23764 KB Output is correct
26 Correct 104 ms 37692 KB Output is correct
27 Correct 147 ms 37344 KB Output is correct
28 Correct 19 ms 24236 KB Output is correct
29 Correct 15 ms 23816 KB Output is correct
30 Correct 16 ms 23796 KB Output is correct
31 Correct 139 ms 37316 KB Output is correct
32 Correct 16 ms 24220 KB Output is correct
33 Correct 156 ms 44448 KB Output is correct
34 Correct 143 ms 37516 KB Output is correct
35 Correct 18 ms 24256 KB Output is correct
36 Correct 148 ms 37980 KB Output is correct
37 Correct 18 ms 24232 KB Output is correct
38 Correct 15 ms 24176 KB Output is correct
39 Correct 117 ms 37652 KB Output is correct
40 Correct 16 ms 24404 KB Output is correct
41 Correct 123 ms 37284 KB Output is correct
42 Correct 140 ms 39692 KB Output is correct
43 Correct 14 ms 23824 KB Output is correct
44 Correct 146 ms 44792 KB Output is correct
45 Correct 139 ms 41052 KB Output is correct
46 Correct 16 ms 24260 KB Output is correct
47 Correct 15 ms 24160 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 37184 KB Output is correct
2 Correct 110 ms 39668 KB Output is correct
3 Correct 16 ms 24296 KB Output is correct
4 Correct 15 ms 24160 KB Output is correct
5 Correct 18 ms 23768 KB Output is correct
6 Correct 15 ms 23768 KB Output is correct
7 Correct 18 ms 24228 KB Output is correct
8 Correct 138 ms 38400 KB Output is correct
9 Correct 14 ms 24148 KB Output is correct
10 Correct 137 ms 37408 KB Output is correct
11 Correct 15 ms 23808 KB Output is correct
12 Correct 147 ms 37348 KB Output is correct
13 Correct 135 ms 38244 KB Output is correct
14 Correct 137 ms 39960 KB Output is correct
15 Correct 95 ms 37628 KB Output is correct
16 Correct 20 ms 24268 KB Output is correct
17 Correct 17 ms 23764 KB Output is correct
18 Correct 131 ms 39928 KB Output is correct
19 Correct 176 ms 43816 KB Output is correct
20 Correct 19 ms 24180 KB Output is correct
21 Correct 17 ms 23812 KB Output is correct
22 Correct 117 ms 38756 KB Output is correct
23 Correct 16 ms 24148 KB Output is correct
24 Correct 146 ms 37652 KB Output is correct
25 Correct 172 ms 42524 KB Output is correct
26 Correct 18 ms 24332 KB Output is correct
27 Correct 15 ms 24276 KB Output is correct
28 Correct 19 ms 24260 KB Output is correct
29 Correct 18 ms 24212 KB Output is correct
30 Correct 19 ms 24276 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 12 ms 23764 KB Output is correct
3 Correct 13 ms 23764 KB Output is correct
4 Correct 12 ms 23764 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 14 ms 23764 KB Output is correct
7 Correct 14 ms 23764 KB Output is correct
8 Correct 13 ms 23780 KB Output is correct
9 Correct 12 ms 23764 KB Output is correct
10 Correct 15 ms 23756 KB Output is correct
11 Correct 16 ms 23820 KB Output is correct
12 Correct 13 ms 23768 KB Output is correct
13 Correct 17 ms 23824 KB Output is correct
14 Correct 19 ms 23764 KB Output is correct
15 Correct 15 ms 23820 KB Output is correct
16 Correct 14 ms 23812 KB Output is correct
17 Correct 14 ms 23764 KB Output is correct
18 Correct 12 ms 23812 KB Output is correct
19 Correct 12 ms 23732 KB Output is correct
20 Correct 12 ms 23764 KB Output is correct
21 Correct 14 ms 23764 KB Output is correct
22 Correct 19 ms 23792 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 14 ms 23820 KB Output is correct
25 Correct 13 ms 23740 KB Output is correct
26 Correct 15 ms 24276 KB Output is correct
27 Correct 18 ms 24212 KB Output is correct
28 Correct 21 ms 24340 KB Output is correct
29 Correct 17 ms 24276 KB Output is correct
30 Correct 16 ms 24200 KB Output is correct
31 Correct 19 ms 23836 KB Output is correct
32 Correct 15 ms 24404 KB Output is correct
33 Correct 13 ms 23816 KB Output is correct
34 Correct 15 ms 24244 KB Output is correct
35 Correct 19 ms 24244 KB Output is correct
36 Correct 17 ms 24140 KB Output is correct
37 Correct 16 ms 24276 KB Output is correct
38 Correct 18 ms 23764 KB Output is correct
39 Correct 16 ms 24276 KB Output is correct
40 Correct 17 ms 24148 KB Output is correct
41 Correct 14 ms 24212 KB Output is correct
42 Correct 14 ms 24276 KB Output is correct
43 Correct 16 ms 24432 KB Output is correct
44 Correct 16 ms 23816 KB Output is correct
45 Correct 17 ms 24340 KB Output is correct
46 Correct 17 ms 24212 KB Output is correct
47 Correct 15 ms 23816 KB Output is correct
48 Correct 19 ms 24204 KB Output is correct
49 Correct 19 ms 24336 KB Output is correct
50 Correct 16 ms 24328 KB Output is correct
51 Correct 18 ms 24148 KB Output is correct
52 Correct 16 ms 24212 KB Output is correct
53 Correct 19 ms 24212 KB Output is correct
54 Correct 17 ms 24156 KB Output is correct
55 Correct 16 ms 23764 KB Output is correct
56 Correct 104 ms 37692 KB Output is correct
57 Correct 147 ms 37344 KB Output is correct
58 Correct 19 ms 24236 KB Output is correct
59 Correct 15 ms 23816 KB Output is correct
60 Correct 16 ms 23796 KB Output is correct
61 Correct 139 ms 37316 KB Output is correct
62 Correct 16 ms 24220 KB Output is correct
63 Correct 156 ms 44448 KB Output is correct
64 Correct 143 ms 37516 KB Output is correct
65 Correct 18 ms 24256 KB Output is correct
66 Correct 148 ms 37980 KB Output is correct
67 Correct 18 ms 24232 KB Output is correct
68 Correct 15 ms 24176 KB Output is correct
69 Correct 117 ms 37652 KB Output is correct
70 Correct 16 ms 24404 KB Output is correct
71 Correct 123 ms 37284 KB Output is correct
72 Correct 140 ms 39692 KB Output is correct
73 Correct 14 ms 23824 KB Output is correct
74 Correct 146 ms 44792 KB Output is correct
75 Correct 139 ms 41052 KB Output is correct
76 Correct 16 ms 24260 KB Output is correct
77 Correct 15 ms 24160 KB Output is correct
78 Correct 92 ms 37184 KB Output is correct
79 Correct 110 ms 39668 KB Output is correct
80 Correct 16 ms 24296 KB Output is correct
81 Correct 15 ms 24160 KB Output is correct
82 Correct 18 ms 23768 KB Output is correct
83 Correct 15 ms 23768 KB Output is correct
84 Correct 18 ms 24228 KB Output is correct
85 Correct 138 ms 38400 KB Output is correct
86 Correct 14 ms 24148 KB Output is correct
87 Correct 137 ms 37408 KB Output is correct
88 Correct 15 ms 23808 KB Output is correct
89 Correct 147 ms 37348 KB Output is correct
90 Correct 135 ms 38244 KB Output is correct
91 Correct 137 ms 39960 KB Output is correct
92 Correct 95 ms 37628 KB Output is correct
93 Correct 20 ms 24268 KB Output is correct
94 Correct 17 ms 23764 KB Output is correct
95 Correct 131 ms 39928 KB Output is correct
96 Correct 176 ms 43816 KB Output is correct
97 Correct 19 ms 24180 KB Output is correct
98 Correct 17 ms 23812 KB Output is correct
99 Correct 117 ms 38756 KB Output is correct
100 Correct 16 ms 24148 KB Output is correct
101 Correct 146 ms 37652 KB Output is correct
102 Correct 172 ms 42524 KB Output is correct
103 Correct 18 ms 24332 KB Output is correct
104 Correct 15 ms 24276 KB Output is correct
105 Correct 19 ms 24260 KB Output is correct
106 Correct 18 ms 24212 KB Output is correct
107 Correct 19 ms 24276 KB Output is correct
108 Correct 602 ms 93624 KB Output is correct
109 Correct 981 ms 105980 KB Output is correct
110 Correct 890 ms 117044 KB Output is correct
111 Correct 1167 ms 124504 KB Output is correct
112 Correct 1131 ms 114752 KB Output is correct
113 Correct 683 ms 101332 KB Output is correct
114 Correct 671 ms 87844 KB Output is correct
115 Correct 677 ms 87860 KB Output is correct
116 Correct 916 ms 90576 KB Output is correct
117 Correct 910 ms 101444 KB Output is correct
118 Correct 706 ms 87756 KB Output is correct
119 Correct 883 ms 101308 KB Output is correct
120 Correct 1098 ms 115352 KB Output is correct
121 Correct 932 ms 101412 KB Output is correct
122 Correct 905 ms 95132 KB Output is correct
123 Correct 688 ms 102520 KB Output is correct
124 Correct 1076 ms 99436 KB Output is correct