Submission #803192

#	Time	Username	Problem	Language	Result	Execution time	Memory
803192		yeyso	Digital Circuit (IOI22_circuit)	C++17	0 / 100	17 ms	7880 KiB

circuit

#include "circuit.h"
#include <bits/stdc++.h>
using namespace std;

#include <vector>
vector<int> dp0;
vector<int> dp1;
vector<vector<int>> adj;
void dfs(int u, int v){
  //cout << u << " ";
  if(adj[u].size() == 2){
      int l = adj[u][0];
      int r = adj[u][1];
      dfs(l, u);
      dfs(r, u);
    
      dp0[u] = dp1[l] * dp0[r] + dp1[r] * dp0[l] + 2 * dp0[l] * dp0[r];
      dp1[u] = dp1[l] * dp0[r] + dp1[r] * dp0[l] + 2 * dp1[l] * dp1[r];
  } else {

  }
}

int n, m;
void init(int N, int M, vector<int> P, vector<int> A) {
    n = N; m = M;
    dp0.resize(N+M, 0);
    dp1.resize(N+M, 0);
    
    for(int i = 0; i < A.size(); i ++){
        dp0[i+N] = A[i] ^ 1;
        dp1[i+N] = A[i]; 
    }
    //for(int i = 0; i < dp1.size(); i ++){
      //cout << dp1[i] << " ";
    //} cout << "\n";

    vector<vector<int>> adj0(N, vector<int>());
    for(int i = 0; i < P.size(); i ++){
        //adj0[i].push_back(P[i]);
        if(i != 0) adj0[P[i]].push_back(i);
    }

    adj = adj0;
}

int count_ways(int L, int R) {
    //return 0;

    for(int i = L; i <= R; i ++){
        dp0[i] = dp0[i] ^ 1;
        dp1[i] = dp1[i] ^ 1;
    }

    dfs(0, 0);
    //for(int i = 0; i < dp1.size(); i ++) cout << dp1[i] << " ";
    //cout << " | ";
    return dp1[0];
}
/*
g++ -std=gnu++17 -O2 -Wall -pipe -static -o circuit stub.cpp circuit.cpp

dp1[i] = dp1[u] * dp0[v] + dp0[u] * dp1[v] + 2 * dp1[u] * dp1[v]

3 4 3
-1 0 1 2 1 1 0
1 0 1 0
3 4
4 5
3 6

*/

Compilation message (stderr)

circuit.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>)':
circuit.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for(int i = 0; i < A.size(); i ++){
      |                    ~~^~~~~~~~~~
circuit.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for(int i = 0; i < P.size(); i ++){
      |                    ~~^~~~~~~~~~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 7
• Subtask 3: 0 / 9
• Subtask 4: 0 / 4
• Subtask 5: 0 / 12
• Subtask 6: 0 / 27
• Subtask 7: 0 / 28
• Subtask 8: 0 / 11