oj.uz

답안 #798461

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
798461 2023-07-30T17:55:06 Z HunterXD Roadside Advertisements (NOI17_roadsideadverts) C++17
47 / 100
 1000 ms 6996 KB 
#include <bits/stdc++.h>
using namespace std;

typedef unsigned short us;
typedef vector<int> vl;
typedef vector<vl> vvl;

#define all(x) x.begin(), x.end()
#define pb push_back

const char nd = '\n';

struct edge {
  us v;
  int w;
};

vector<vector<edge>> graph;
bitset<50001> visto;

int res = 0;
us dfs(us u, us p) {
  us cdown = 0, temp = 0;
  for (auto v : graph[u]) {
    if (v.v == p) continue;
    temp = dfs(v.v, u);
    if (temp && temp != 5) res += v.w;
    cdown += temp;
  }
  if (visto[u]) cdown++;
  return cdown;
}

signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  //
  int n;
  cin >> n;

  graph.assign(n + 1, vector<edge>());

  us u, v;
  int w;
  for (int i = 1; i < n; i++) {
    cin >> u >> v >> w;
    graph[u].pb({v, w});
    graph[v].pb({u, w});
  }

  int q;
  cin >> q;

  vector<us> a(5);

  while (q--) {
    for (auto &v : a) cin >> v, visto[v] = true;
    res = 0;
    dfs(0, -1);
    for (auto &v : a) visto[v] = false;
    cout << res << nd;
  }
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct

Subtask #2
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1056 ms 5256 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 120 ms 3404 KB Output is correct
2 Correct 195 ms 6888 KB Output is correct
3 Correct 194 ms 6932 KB Output is correct
4 Correct 196 ms 6996 KB Output is correct
5 Correct 203 ms 6860 KB Output is correct
6 Correct 195 ms 6964 KB Output is correct
7 Correct 198 ms 6868 KB Output is correct
8 Correct 204 ms 6868 KB Output is correct
9 Correct 197 ms 6972 KB Output is correct
10 Correct 198 ms 6876 KB Output is correct

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 1056 ms 5256 KB Time limit exceeded
3 Halted 0 ms 0 KB -