oj.uz

답안 #565310

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
565310 2022-05-20T16:23:26 Z SSRS Election Campaign (JOI15_election_campaign) C++14
20 / 100
 524 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  vector<vector<int>> E(N);
  for (int i = 0; i < N - 1; i++){
    int X, Y;
    cin >> X >> Y;
    X--;
    Y--;
    E[X].push_back(Y);
    E[Y].push_back(X);
  }
  int M;
  cin >> M;
  vector<int> A(M), B(M), C(M);
  for (int i = 0; i < M; i++){
    cin >> A[i] >> B[i] >> C[i];
    A[i]--;
    B[i]--;
  }
  vector<int> p(N, -1);
  vector<vector<int>> c(N);
  vector<int> d(N, 0);
  queue<int> Q;
  Q.push(0);
  vector<int> bfs;
  while (!Q.empty()){
    int v = Q.front();
    Q.pop();
    bfs.push_back(v);
    for (int w : E[v]){
      if (w != p[v]){
        p[w] = v;
        c[v].push_back(w);
        d[w] = d[v] + 1;
        Q.push(w);
      }
    }
  }
  vector<vector<int>> path(M);
  vector<vector<int>> id(N);
  for (int i = 0; i < M; i++){
    int u = A[i], v = B[i];
    while (d[u] > d[v]){
      path[i].push_back(u);
      u = p[u];
    }
    while (d[v] > d[u]){
      path[i].push_back(v);
      v = p[v];
    }
    while (u != v){
      path[i].push_back(u);
      path[i].push_back(v);
      u = p[u];
      v = p[v];
    }
    path[i].push_back(u);
    id[u].push_back(i);
  }
  reverse(bfs.begin(), bfs.end());
  vector<int> dp(N, 0);
  vector<int> dpsum(N, 0);
  for (int v : bfs){
    for (int w : c[v]){
      dpsum[v] += dp[w];
    }
    int tmp = dpsum[v];
    for (int w : id[v]){
      vector<bool> in_path(N, false);
      int sum = 0;
      for (int x : path[w]){
        sum += dpsum[x] - dp[x];
      }
      tmp = max(tmp, sum + C[w]);
    }
    dp[v] = tmp;
  }
  cout << dp[0] << endl;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 140 ms 14148 KB Output is correct
6 Correct 71 ms 16172 KB Output is correct
7 Correct 91 ms 15404 KB Output is correct
8 Correct 74 ms 13568 KB Output is correct
9 Correct 95 ms 16696 KB Output is correct
10 Correct 82 ms 13580 KB Output is correct

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 2 ms 596 KB Output is correct
4 Runtime error 510 ms 262144 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 2 ms 596 KB Output is correct
4 Runtime error 510 ms 262144 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 295 ms 31340 KB Output is correct
2 Runtime error 524 ms 262144 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 140 ms 14148 KB Output is correct
6 Correct 71 ms 16172 KB Output is correct
7 Correct 91 ms 15404 KB Output is correct
8 Correct 74 ms 13568 KB Output is correct
9 Correct 95 ms 16696 KB Output is correct
10 Correct 82 ms 13580 KB Output is correct
11 Correct 3 ms 468 KB Output is correct
12 Correct 6 ms 2388 KB Output is correct
13 Correct 3 ms 852 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 5 ms 1748 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 6 ms 2388 KB Output is correct

Subtask #6
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 140 ms 14148 KB Output is correct
6 Correct 71 ms 16172 KB Output is correct
7 Correct 91 ms 15404 KB Output is correct
8 Correct 74 ms 13568 KB Output is correct
9 Correct 95 ms 16696 KB Output is correct
10 Correct 82 ms 13580 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 2 ms 596 KB Output is correct
14 Runtime error 510 ms 262144 KB Execution killed with signal 9
15 Halted 0 ms 0 KB -