Submission #555317

# Submission time Handle Problem Language Result Execution time Memory
555317 2022-04-30T12:39:25 Z urosk Mergers (JOI19_mergers) C++14
10 / 100
3000 ms 19556 KB
// __builtin_popcount(x)
// __builtin_popcountll(x)
#define here cerr<<"===========================================\n"
#include <bits/stdc++.h>
#define ld double
#define ll long long
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) int(a.size())
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
using namespace std;

#define maxn 5005
ll n,k;
ll a[maxn];
ll dp[maxn][2];
ll b[maxn];
ll in[maxn];
ll out[maxn];
vector<ll> g[maxn];
vector<ll> v[maxn];
vector<ll> f[maxn];
ll ti = 1;
ll col = -1;
ll con[maxn];
ll dsu[maxn];
ll root(ll x){
    while(x!=dsu[x]){
        dsu[x] = dsu[dsu[x]];
        x = dsu[x];
    }
    return x;
}
void upd(ll x,ll y){
    x = root(x); y = root(y);
    dsu[x] = y;
}
ll root2(ll x){
    while(x!=con[x]){
        con[x] = con[con[x]];
        x = con[x];
    }
    return x;
}
void upd2(ll x,ll y){
    x = root2(x); y = root2(y);
    con[x] = y;
}
void updg(ll x,ll y){
    upd2(x,y);
    f[x].pb(y);
    f[y].pb(x);
}
void dfs(ll u,ll par,vector<ll> w){
    w.pb(u);
    if(col==b[u]&&sz(w)>1){
        for(ll j = 0;j<sz(w)-1;j++) upd(w[j],w[j+1]);
    }
    for(ll s : g[u]){
        if(s==par) continue;
        dfs(s,u,w);
    }
}
ll dis[maxn];
ll getnaj(ll u,ll par){
    ll y = u;
    for(ll s : f[u]){
        if(s==par) continue;
        dis[s] = dis[u] + 1;
        ll e = getnaj(s,u);
        if(dis[e]>dis[y]) y = e;
    }
    return y;
}
ll sizi = 0;
void brisi(ll u,ll par,ll x,vector<ll> w){
    w.pb(u);
    if(u==x){
        for(ll i = 0;i<sz(w)-1;i++){
            upd(w[i],w[i+1]);
        }
        sizi-=(sz(w)-1);
        return;
    }
    for(ll s : f[u]){
        if(s==par) continue;
        brisi(s,u,x,w);
    }
}
bool vis[maxn];
int main(){
	ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
    cin >> n >> k;
    iota(dsu+1,dsu+n+1,1);
    for(ll i = 1;i<=n-1;i++){
        ll x,y; cin >> x >> y;
        g[x].pb(y);
        g[y].pb(x);
    }
    for(ll i = 1;i<=n;i++) cin >> b[i];
    for(ll i = 1;i<=n;i++){
        v[b[i]].pb(i);
    }
    for(ll i = 1;i<=k;i++){
        if(sz(v[i])==0) continue;
        col = i;
        dfs(v[i][0],v[i][0],{});
    }
    for(ll i = 1;i<=n;i++){
        if(vis[root(i)]) continue;
        vis[root(i)] = 1;
        sizi++;
    }
    iota(con+1,con+n+1,1);
    for(ll i = 1;i<=n;i++){
        ll x = root(i);
        for(ll j : g[i]){
            ll y = root(j);
            if(root2(x)==root2(y)) continue;
            updg(x,y);
        }
    }
    //for(ll i= 1;i<=n;i++) cerr<<root(i)<< " ";
    //cerr<<endl;
    ll ans = 0;
    while(sizi>1){
        /*
        here;
        for(ll i = 1;i<=n;i++){
            if(sz(f[i])==0) continue;
            cerr<<"i: "<<i<<endl;
            for(ll x : f[i]) cerr<<x<< " ";
            cerr<<endl;
        }
        */
        ll poc = 1;
        for(ll i = 1;i<=n;i++) if(sz(f[i])>0) poc = i;
        //cerr<<"poc: "<<poc<<endl;
        fill(dis,dis+n+1,0);
        dis[0] = llinf;
        ll x = getnaj(poc,poc);
        //cerr<<x<<endl;

        fill(dis,dis+n+1,0);
        dis[0] = llinf;
        ll y = getnaj(x,x);
        brisi(x,x,y,{});
        //cerr<<y<<endl;
        for(ll i = 1;i<=n;i++) f[i].clear();
        iota(con+1,con+n+1,1);
        for(ll i = 1;i<=n;i++){
            ll x = root(i);
            for(ll j : g[i]){
                ll y = root(j);
                if(root2(x)==root2(y)) continue;
                updg(x,y);
            }
        }
        ans++;
    }
    cout<<ans<<endl;
	return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 0 ms 724 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 0 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 680 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 684 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 1 ms 684 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 0 ms 724 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 0 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 680 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 684 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 1 ms 684 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 543 ms 1864 KB Output is correct
27 Correct 83 ms 2060 KB Output is correct
28 Execution timed out 3080 ms 19556 KB Time limit exceeded
29 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 0 ms 724 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 0 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 680 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 684 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 1 ms 684 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Runtime error 2 ms 1748 KB Execution killed with signal 11
27 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 1748 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 0 ms 724 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 0 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 680 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 684 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 1 ms 684 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 543 ms 1864 KB Output is correct
27 Correct 83 ms 2060 KB Output is correct
28 Execution timed out 3080 ms 19556 KB Time limit exceeded
29 Halted 0 ms 0 KB -