Submission #789659

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
789659	2023-07-21 16:27:39	esomer	Toy Train (IOI17_train)	C++17	100 / 100	476 ms	1400 KiB

train

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#include<bits/stdc++.h>
#include "train.h"
 
using namespace std;
 
typedef long long ll;
 
void process(vector<int>& A, vector<int>& R, vector<int>& U, vector<int>& V, vector<bool>& forced, vector<int>& out, vector<vector<int>>& radj){
  int n = (int)A.size();
  int m = (int)U.size();
  queue<int> q;
  for(int i = 0; i < n; i++){
    if(out[i] == 0 || R[i] == 1){
      forced[i] = 0;
      q.push(i);
    }
  }
  vector<int> org = out;
  while(!q.empty()){
    int x = q.front(); q.pop();
    for(int node : radj[x]){
      out[node]--;
      if(forced[node] == 0) continue;
      if(out[node] == 0) {q.push(node); forced[node] = 0;}
      else if(A[node] == 1){
        forced[node] = 0;
        q.push(node);
      }
    }
  }
 
 
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Compilation message (stderr)

train.cpp: In function 'void process(std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<int>&, std::vector<bool>&, std::vector<int>&, std::vector<std::vector<int> >&)':
train.cpp:10:6: warning: unused variable 'm' [-Wunused-variable]
   10 |  int m = (int)U.size();
      |      ^

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 12 / 12
• Subtask 6: 51 / 51