oj.uz

답안 #546973

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
546973 2022-04-09T05:16:18 Z OttoTheDino File Paths (BOI15_fil) C++17
33 / 100
 1000 ms 63764 KB 
  #pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
    using namespace std;
     
    #define rep(i,s,e)                  for (ll i = s; i <= e; ++i)
    #define rrep(i,s,e)                 for (ll i = s; i >= e; --i)
    #define pb                          push_back
    #define pf                          push_front
    #define fi                          first
    #define se                          second
    #define all(a)                      a.begin(), a.end()
    #define SZ(a)                       (ll)a.size()
    typedef long long ll;
    typedef pair<ll, ll> ii;
    typedef vector<ii> vii;
    typedef vector<ll> vi;
    typedef vector<double> vd;
    typedef vector<string> vs;
    typedef vector<ll> vll;
     
    const ll mx = 3e3;
    vi adj[mx+1], files[mx+1];
    ll cost[mx+1], costf[mx+1], ans[mx+1], s, k, p[mx+1];
    unordered_map<ll,ll> cnt, spec;
     
    void dfs3 (ll u, ll cur) {
        spec[cur] = 1;
        for (ll v : adj[u]) {
            dfs3 (v, cur + cost[v]);
        }
    }
     
    void dfs2 (ll u, ll cur, ll d) {
        cnt[cur] += d;
        for (ll v : adj[u]) dfs2 (v, cur+cost[v], d);
    }
     
    void dfs (ll u, ll cur) {
        dfs2 (u, 0, 1);
        for (ll v : adj[u]) dfs (v, cur + cost[v]);
        for (ll v : files[u]) {
            ll x = k - cur - costf[v];
            if (x==0) ans[v] = 1;
            for (ll i = 1; i*i <= x; ++i) {
                if (x%i==0) {
                    if (cnt[i-s]) ans[v] = 1;
                    if (cnt[x/i-s]) ans[v] = 1;
                }
            }
            ll go = u, cur2 = 0;
            while (go>=0) {
                if (spec[k-costf[v]-cur2-s]) ans[v] = 1;
                cur2 += cost[go];
                go = p[go];
            }
        }
        dfs2 (u, 0, -1);
    }
     
    int main() {
        ios::sync_with_stdio(0);
        cin.tie(0);
     
        ll n, m; cin >> n >> m >> k >> s;
        ++s;
     
        p[0] = -1;
     
        rep (i,1,n) {
            cin >> p[i] >> cost[i];
            ++cost[i];
            adj[p[i]].pb(i);
        }
        rep (i,1,m) {
            ll pr; cin >> pr >> costf[i];
            ++costf[i];
            files[pr].pb(i);
        }
      dfs3(0,0);
        dfs (0,0);
        rep (i,1,m) cout << (ans[i]?"YES":"NO") << "\n";
     
        return 0;
    }

Subtask #1
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 17 ms 4856 KB Output is correct
5 Correct 8 ms 2328 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 44 ms 9900 KB Output is correct
8 Correct 2 ms 724 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 14 ms 3248 KB Output is correct

Subtask #2
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 1620 KB Output is correct
2 Correct 12 ms 1656 KB Output is correct
3 Correct 12 ms 1632 KB Output is correct
4 Correct 13 ms 1692 KB Output is correct
5 Execution timed out 1097 ms 63764 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 724 KB Output is correct
4 Correct 17 ms 4856 KB Output is correct
5 Correct 8 ms 2328 KB Output is correct
6 Correct 6 ms 1108 KB Output is correct
7 Correct 44 ms 9900 KB Output is correct
8 Correct 2 ms 724 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 14 ms 3248 KB Output is correct
13 Correct 12 ms 1620 KB Output is correct
14 Correct 12 ms 1656 KB Output is correct
15 Correct 12 ms 1632 KB Output is correct
16 Correct 13 ms 1692 KB Output is correct
17 Execution timed out 1097 ms 63764 KB Time limit exceeded
18 Halted 0 ms 0 KB -