Submission #569494

#TimeUsernameProblemLanguageResultExecution timeMemory
569494TurkhuuRoad Closures (APIO21_roads)C++17
5 / 100
52 ms4356 KiB
#include "roads.h"
#include <bits/stdc++.h>
std::vector<long long> minimum_closure_costs(int n, std::vector<int> u, std::vector<int> v, std::vector<int> w){
  bool subtask1 = true;
  for(int i = 0; i < n - 1; i++){
    if(u[i] != 0){
      subtask1 = false;
    }
  }
  if(subtask1){
    sort(w.begin(), w.end());
    std::vector<long long> ans(n);
    for(int i = 0; i < n - 1; i++){
      ans[n - i - 2] = ans[n - i - 1] + w[i];
    }
    return ans;
  }
  bool subtask2 = true;
  for(int i = 0; i < n - 1; i++){
    if(u[i] != i || v[i] != i + 1){
      subtask2 = false;
    }
  }
  if(subtask2){
    assert(false);
    std::vector<long long> ans(n);
    ans[0] = accumulate(w.begin(), w.end(), 0LL);
    std::vector<std::vector<long long>> dp(n, std::vector<long long>(2));
    for(int i = 0; i < n - 1; i++){
      dp[i][0] = (i == 0 ? 0 : std::min(dp[i - 1][0], dp[i - 1][1])) + w[i];
      dp[i][1] = (i == 0 ? 0 : dp[i - 1][0]) + w[i];
    }
    ans[1] = std::min(dp.back()[0], dp.back()[1]);
    return ans;
  }
  return std::vector<long long>(n, 0);
}
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