oj.uz

Submission #938227

# Submission time Handle Problem Language Result Execution time Memory
938227 2024-03-05T03:14:00 Z LittleOrange Unique Cities (JOI19_ho_t5) C++17
4 / 100
 2000 ms 42604 KB 
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    ios::sync_with_stdio(0);cin.tie(0);
    ll n,m;
    cin >> n >> m;
    vector<vector<ll>> con(n);
    vector<ll> c(n);
    for(ll i = 1;i<n;i++){
        ll u,v;
        cin >> u >> v;
        con[u-1].push_back(v-1);
        con[v-1].push_back(u-1);
    }
    for(ll &i : c) cin >> i;
    vector<ll> d(n,0),p(n,0);
    {
        function<void(ll)> dfs;
        dfs = [&](ll i){
            for(ll j : con[i]) if(j!=p[i]){
                p[j] = i;
                d[j] = d[i]+1;
                dfs(j);
            }
        };
        dfs(0);
    }
    vector<vector<ll>> pp(20,vector<ll>(n));
    pp[0] = p;
    for(ll i = 1;i<20;i++){
        for(ll j = 0;j<n;j++){
            pp[i][j] = pp[i-1][pp[i-1][j]];
        }
    }
    function<ll(ll,ll)> dis = [&](ll a, ll b){
        if (d[a]<d[b]) swap(a,b);
        //cerr << "dis " << a << " " << b << endl;
        ll da = d[a];
        ll db = d[b];
        ll x = da-db;
        while(x){
            a = pp[__builtin_ctzll(x)][a];
            x -= x&-x;
        }
        //cerr << "dis " << a << " " << b << endl;
        for(ll j = 19;j>=0;j--){
            if (pp[j][a]!=pp[j][b]){
                a = pp[j][a];
                b = pp[j][b];
            }
        }
        if(a!=b) a = p[a];
        return da+db-d[a]*2;
    };//cerr << "cp1\n";
    for(ll i = 0;i<n;i++){
        map<ll,ll> cnt;
        for(ll j = 0;j<n;j++) if(i!=j){
            cnt[dis(i,j)]++;
        }
        set<ll> s;
        for(ll j = 0;j<n;j++) if(i!=j){
            if(cnt[dis(i,j)]==1){
                s.insert(c[j]);
            }
        }
        cout << s.size() << "\n";
    }
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 835 ms 912 KB Output is correct
3 Correct 319 ms 808 KB Output is correct
4 Correct 1139 ms 1240 KB Output is correct
5 Correct 985 ms 1108 KB Output is correct
6 Correct 1733 ms 1148 KB Output is correct
7 Correct 1416 ms 1292 KB Output is correct
8 Correct 677 ms 860 KB Output is correct
9 Correct 1120 ms 972 KB Output is correct
10 Correct 1018 ms 860 KB Output is correct
11 Correct 1022 ms 964 KB Output is correct
12 Correct 395 ms 964 KB Output is correct
13 Correct 1690 ms 1136 KB Output is correct
14 Correct 1130 ms 1024 KB Output is correct
15 Correct 1227 ms 1008 KB Output is correct
16 Correct 308 ms 956 KB Output is correct
17 Correct 1090 ms 1128 KB Output is correct
18 Correct 1260 ms 1044 KB Output is correct
19 Correct 944 ms 968 KB Output is correct
20 Correct 1849 ms 1360 KB Output is correct
21 Correct 1411 ms 1056 KB Output is correct
22 Correct 687 ms 876 KB Output is correct
23 Correct 1128 ms 972 KB Output is correct
24 Correct 996 ms 1108 KB Output is correct
25 Correct 1053 ms 968 KB Output is correct
26 Correct 391 ms 972 KB Output is correct
27 Correct 1642 ms 1172 KB Output is correct
28 Correct 1283 ms 1132 KB Output is correct
29 Correct 1209 ms 1036 KB Output is correct
30 Correct 290 ms 860 KB Output is correct
31 Correct 1256 ms 1360 KB Output is correct
32 Correct 1240 ms 1064 KB Output is correct

Subtask #2
0 / 32.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2045 ms 30548 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 32.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2041 ms 42604 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 835 ms 912 KB Output is correct
3 Correct 319 ms 808 KB Output is correct
4 Correct 1139 ms 1240 KB Output is correct
5 Correct 985 ms 1108 KB Output is correct
6 Correct 1733 ms 1148 KB Output is correct
7 Correct 1416 ms 1292 KB Output is correct
8 Correct 677 ms 860 KB Output is correct
9 Correct 1120 ms 972 KB Output is correct
10 Correct 1018 ms 860 KB Output is correct
11 Correct 1022 ms 964 KB Output is correct
12 Correct 395 ms 964 KB Output is correct
13 Correct 1690 ms 1136 KB Output is correct
14 Correct 1130 ms 1024 KB Output is correct
15 Correct 1227 ms 1008 KB Output is correct
16 Correct 308 ms 956 KB Output is correct
17 Correct 1090 ms 1128 KB Output is correct
18 Correct 1260 ms 1044 KB Output is correct
19 Correct 944 ms 968 KB Output is correct
20 Correct 1849 ms 1360 KB Output is correct
21 Correct 1411 ms 1056 KB Output is correct
22 Correct 687 ms 876 KB Output is correct
23 Correct 1128 ms 972 KB Output is correct
24 Correct 996 ms 1108 KB Output is correct
25 Correct 1053 ms 968 KB Output is correct
26 Correct 391 ms 972 KB Output is correct
27 Correct 1642 ms 1172 KB Output is correct
28 Correct 1283 ms 1132 KB Output is correct
29 Correct 1209 ms 1036 KB Output is correct
30 Correct 290 ms 860 KB Output is correct
31 Correct 1256 ms 1360 KB Output is correct
32 Correct 1240 ms 1064 KB Output is correct
33 Execution timed out 2045 ms 30548 KB Time limit exceeded
34 Halted 0 ms 0 KB -