oj.uz

Submission #944688

# Submission time Handle Problem Language Result Execution time Memory
944688 2024-03-13T03:33:45 Z imarn Capital City (JOI20_capital_city) C++14
100 / 100
 537 ms 39064 KB 
#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define double long double
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
#define vp vector<pii>
using namespace std;
const int N=2e5+5;
vector<int>g[N],co[N];
int sz[N],c[N],pr[N],up[N];
bool vis[N]{0},use[N]{0},usec[N]{0};
int get(int r){
    return pr[r]==r?r:pr[r]=get(pr[r]);
}
int getsize(int u,int p){
    sz[u]=1;for(auto v:g[u])if(v!=p&&!vis[v])sz[u]+=getsize(v,u);
    return sz[u];
}
int getct(int u,int p,int n){
    for(auto v:g[u])if(v!=p&&!vis[v]&&sz[v]*2>n)return getct(v,u,n);
    return u;
}
void dfs(int u,int p){
    up[u]=p;use[u]=1;for(auto v:g[u])if(v!=p&&!vis[v])dfs(v,u);
}
void rdfs(int u,int p){
    pr[u]=u;up[u]=u;use[u]=0;usec[c[u]]=0;
    for(auto v:g[u])if(v!=p&&!vis[v])rdfs(v,u);
}int ans=1e8;
void play(int u){
    u=getct(u,u,getsize(u,u));int cnt=1;
    vis[u]=1;dfs(u,u);bool ok=1;
    queue<int>q;q.push(c[u]);usec[c[u]]=1;
    while(!q.empty()){
        int cl=q.front();q.pop();
        for(int it : co[cl]){
            if(!use[it]){ok=0;break;}
            while(get(it)!=get(u)){
                int v=get(up[it]);pr[get(it)]=v;
                if(!usec[c[v]])q.push(c[v]),usec[c[v]]=1,cnt++;it=v;
            }
        }
    }if(ok)ans=min(cnt,ans);rdfs(u,u);
    for(auto v :g[u])if(!vis[v])play(v);

}
int main(){
    ios_base::sync_with_stdio(0);
    int n,k;cin>>n>>k;iota(pr,pr+n+1,0);
    for(int i=1,u,v;i<=n-1;i++){
        cin>>u>>v;g[u].pb(v);g[v].pb(u);
    }for(int i=1;i<=n;i++)cin>>c[i],co[c[i]].pb(i);
    play(1);cout<<ans-1;

}

Compilation message

capital_city.cpp: In function 'void play(int)':
capital_city.cpp:46:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   46 |                 if(!usec[c[v]])q.push(c[v]),usec[c[v]]=1,cnt++;it=v;
      |                 ^~
capital_city.cpp:46:64: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   46 |                 if(!usec[c[v]])q.push(c[v]),usec[c[v]]=1,cnt++;it=v;
      |                                                                ^~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 13404 KB Output is correct
2 Correct 4 ms 13144 KB Output is correct
3 Correct 2 ms 13404 KB Output is correct
4 Correct 3 ms 13396 KB Output is correct
5 Correct 3 ms 13404 KB Output is correct
6 Correct 3 ms 13404 KB Output is correct
7 Correct 4 ms 13400 KB Output is correct
8 Correct 5 ms 13392 KB Output is correct
9 Correct 3 ms 13404 KB Output is correct
10 Correct 3 ms 13392 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 13404 KB Output is correct
2 Correct 4 ms 13144 KB Output is correct
3 Correct 2 ms 13404 KB Output is correct
4 Correct 3 ms 13396 KB Output is correct
5 Correct 3 ms 13404 KB Output is correct
6 Correct 3 ms 13404 KB Output is correct
7 Correct 4 ms 13400 KB Output is correct
8 Correct 5 ms 13392 KB Output is correct
9 Correct 3 ms 13404 KB Output is correct
10 Correct 3 ms 13392 KB Output is correct
11 Correct 4 ms 13404 KB Output is correct
12 Correct 4 ms 13404 KB Output is correct
13 Correct 4 ms 13400 KB Output is correct
14 Correct 4 ms 13404 KB Output is correct
15 Correct 5 ms 13660 KB Output is correct
16 Correct 5 ms 13404 KB Output is correct
17 Correct 4 ms 13404 KB Output is correct
18 Correct 5 ms 13400 KB Output is correct
19 Correct 5 ms 13572 KB Output is correct
20 Correct 4 ms 13404 KB Output is correct
21 Correct 4 ms 13656 KB Output is correct
22 Correct 4 ms 13404 KB Output is correct
23 Correct 5 ms 13404 KB Output is correct
24 Correct 4 ms 13404 KB Output is correct
25 Correct 6 ms 13400 KB Output is correct
26 Correct 6 ms 13404 KB Output is correct
27 Correct 4 ms 13404 KB Output is correct
28 Correct 4 ms 13404 KB Output is correct
29 Correct 4 ms 13404 KB Output is correct
30 Correct 5 ms 13404 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 368 ms 38500 KB Output is correct
2 Correct 184 ms 39064 KB Output is correct
3 Correct 359 ms 38404 KB Output is correct
4 Correct 159 ms 38992 KB Output is correct
5 Correct 367 ms 36008 KB Output is correct
6 Correct 177 ms 39036 KB Output is correct
7 Correct 404 ms 36120 KB Output is correct
8 Correct 168 ms 38716 KB Output is correct
9 Correct 525 ms 34628 KB Output is correct
10 Correct 537 ms 32688 KB Output is correct
11 Correct 425 ms 35064 KB Output is correct
12 Correct 450 ms 37124 KB Output is correct
13 Correct 474 ms 32596 KB Output is correct
14 Correct 429 ms 37368 KB Output is correct
15 Correct 465 ms 37104 KB Output is correct
16 Correct 428 ms 33124 KB Output is correct
17 Correct 453 ms 33568 KB Output is correct
18 Correct 483 ms 33732 KB Output is correct
19 Correct 437 ms 36268 KB Output is correct
20 Correct 508 ms 38228 KB Output is correct
21 Correct 3 ms 13144 KB Output is correct

Subtask #4
59.0 / 59.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 13404 KB Output is correct
2 Correct 4 ms 13144 KB Output is correct
3 Correct 2 ms 13404 KB Output is correct
4 Correct 3 ms 13396 KB Output is correct
5 Correct 3 ms 13404 KB Output is correct
6 Correct 3 ms 13404 KB Output is correct
7 Correct 4 ms 13400 KB Output is correct
8 Correct 5 ms 13392 KB Output is correct
9 Correct 3 ms 13404 KB Output is correct
10 Correct 3 ms 13392 KB Output is correct
11 Correct 4 ms 13404 KB Output is correct
12 Correct 4 ms 13404 KB Output is correct
13 Correct 4 ms 13400 KB Output is correct
14 Correct 4 ms 13404 KB Output is correct
15 Correct 5 ms 13660 KB Output is correct
16 Correct 5 ms 13404 KB Output is correct
17 Correct 4 ms 13404 KB Output is correct
18 Correct 5 ms 13400 KB Output is correct
19 Correct 5 ms 13572 KB Output is correct
20 Correct 4 ms 13404 KB Output is correct
21 Correct 4 ms 13656 KB Output is correct
22 Correct 4 ms 13404 KB Output is correct
23 Correct 5 ms 13404 KB Output is correct
24 Correct 4 ms 13404 KB Output is correct
25 Correct 6 ms 13400 KB Output is correct
26 Correct 6 ms 13404 KB Output is correct
27 Correct 4 ms 13404 KB Output is correct
28 Correct 4 ms 13404 KB Output is correct
29 Correct 4 ms 13404 KB Output is correct
30 Correct 5 ms 13404 KB Output is correct
31 Correct 368 ms 38500 KB Output is correct
32 Correct 184 ms 39064 KB Output is correct
33 Correct 359 ms 38404 KB Output is correct
34 Correct 159 ms 38992 KB Output is correct
35 Correct 367 ms 36008 KB Output is correct
36 Correct 177 ms 39036 KB Output is correct
37 Correct 404 ms 36120 KB Output is correct
38 Correct 168 ms 38716 KB Output is correct
39 Correct 525 ms 34628 KB Output is correct
40 Correct 537 ms 32688 KB Output is correct
41 Correct 425 ms 35064 KB Output is correct
42 Correct 450 ms 37124 KB Output is correct
43 Correct 474 ms 32596 KB Output is correct
44 Correct 429 ms 37368 KB Output is correct
45 Correct 465 ms 37104 KB Output is correct
46 Correct 428 ms 33124 KB Output is correct
47 Correct 453 ms 33568 KB Output is correct
48 Correct 483 ms 33732 KB Output is correct
49 Correct 437 ms 36268 KB Output is correct
50 Correct 508 ms 38228 KB Output is correct
51 Correct 3 ms 13144 KB Output is correct
52 Correct 256 ms 24916 KB Output is correct
53 Correct 320 ms 24952 KB Output is correct
54 Correct 250 ms 24952 KB Output is correct
55 Correct 290 ms 24960 KB Output is correct
56 Correct 301 ms 24956 KB Output is correct
57 Correct 270 ms 24956 KB Output is correct
58 Correct 287 ms 27944 KB Output is correct
59 Correct 223 ms 28352 KB Output is correct
60 Correct 278 ms 27740 KB Output is correct
61 Correct 340 ms 27412 KB Output is correct
62 Correct 159 ms 38920 KB Output is correct
63 Correct 167 ms 39060 KB Output is correct
64 Correct 159 ms 38740 KB Output is correct
65 Correct 164 ms 39032 KB Output is correct
66 Correct 278 ms 32116 KB Output is correct
67 Correct 200 ms 31940 KB Output is correct
68 Correct 228 ms 31948 KB Output is correct
69 Correct 234 ms 32104 KB Output is correct
70 Correct 217 ms 31944 KB Output is correct
71 Correct 200 ms 31952 KB Output is correct
72 Correct 201 ms 32020 KB Output is correct
73 Correct 204 ms 31268 KB Output is correct
74 Correct 216 ms 31948 KB Output is correct
75 Correct 227 ms 32052 KB Output is correct
76 Correct 337 ms 31060 KB Output is correct
77 Correct 326 ms 29592 KB Output is correct
78 Correct 425 ms 33308 KB Output is correct
79 Correct 472 ms 32120 KB Output is correct
80 Correct 434 ms 37544 KB Output is correct
81 Correct 515 ms 34796 KB Output is correct
82 Correct 457 ms 35080 KB Output is correct
83 Correct 446 ms 32084 KB Output is correct
84 Correct 473 ms 36976 KB Output is correct
85 Correct 415 ms 35692 KB Output is correct
86 Correct 423 ms 31980 KB Output is correct
87 Correct 478 ms 33364 KB Output is correct
88 Correct 393 ms 34192 KB Output is correct
89 Correct 337 ms 30964 KB Output is correct
90 Correct 332 ms 30816 KB Output is correct
91 Correct 361 ms 32596 KB Output is correct
92 Correct 341 ms 31716 KB Output is correct
93 Correct 340 ms 31420 KB Output is correct
94 Correct 331 ms 30772 KB Output is correct
95 Correct 371 ms 32080 KB Output is correct
96 Correct 380 ms 30948 KB Output is correct
97 Correct 339 ms 32892 KB Output is correct