oj.uz

Submission #903084

# Submission time Handle Problem Language Result Execution time Memory
903084 2024-01-11T05:34:11 Z GrindMachine Synchronization (JOI13_synchronization) C++17
40 / 100
 8000 ms 22624 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

vector<pll> adj[N];
vector<pll> times[N];
ll ans;

void dfs1(ll u, ll p, ll t){
    ans++;

    for(auto [v,id] : adj[u]){
        if(v == p) conts;
        auto &ti = times[id];

        // find the biggest l s.t l <= t
        auto it = upper_bound(all(ti),make_pair(t+1,-1ll));
        if(it == ti.begin()) conts;

        it--;
        auto [l,r] = *it;
        dfs1(v,u,min(t,r));
    }
}

void solve(int test_case)
{
    ll n,m,q; cin >> n >> m >> q;
    vector<pll> edges(n+5);

    rep1(i,n-1){
        ll u,v; cin >> u >> v;
        adj[u].pb({v,i}), adj[v].pb({u,i});
        edges[i] = {u,v};
    }

    vector<bool> curr(n+5);

    rep1(i,m){
        ll id; cin >> id;
        if(!curr[id]){
            curr[id] = 1;
            times[id].pb({i,m});
        }
        else{
            curr[id] = 0;
            times[id].back().ss = i;
        }
    }

    while(q--){
        ll root; cin >> root;
        ans = 0;
        dfs1(root,-1,m+1);
        cout << ans << endl;
    }
}

int main()
{
    fastio;

    int t = 1;
    // cin >> t;

    rep1(i, t) {
        solve(i);
    }

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4952 KB Output is correct
2 Correct 2 ms 4960 KB Output is correct
3 Correct 2 ms 4960 KB Output is correct
4 Correct 1 ms 4964 KB Output is correct
5 Correct 2 ms 4960 KB Output is correct
6 Correct 2 ms 5216 KB Output is correct
7 Correct 6 ms 6232 KB Output is correct
8 Correct 9 ms 6232 KB Output is correct
9 Correct 5 ms 6236 KB Output is correct
10 Correct 60 ms 17632 KB Output is correct
11 Correct 59 ms 17624 KB Output is correct
12 Correct 56 ms 17236 KB Output is correct
13 Correct 41 ms 16844 KB Output is correct
14 Correct 56 ms 16732 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 20424 KB Output is correct
2 Correct 39 ms 18744 KB Output is correct
3 Correct 36 ms 21844 KB Output is correct
4 Correct 49 ms 21036 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4952 KB Output is correct
2 Correct 1 ms 4956 KB Output is correct
3 Correct 1 ms 4956 KB Output is correct
4 Correct 1 ms 4956 KB Output is correct
5 Correct 1 ms 4956 KB Output is correct
6 Correct 2 ms 5432 KB Output is correct
7 Correct 8 ms 6236 KB Output is correct
8 Correct 75 ms 18008 KB Output is correct
9 Correct 68 ms 17888 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 17796 KB Output is correct
2 Execution timed out 8080 ms 22624 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5156 KB Output is correct
2 Correct 1 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 1 ms 5152 KB Output is correct
5 Correct 4 ms 5212 KB Output is correct
6 Correct 56 ms 6428 KB Output is correct
7 Correct 2196 ms 18672 KB Output is correct
8 Correct 68 ms 17856 KB Output is correct
9 Execution timed out 8080 ms 18932 KB Time limit exceeded
10 Halted 0 ms 0 KB -