Submission #995376

#	Time	Username	Problem	Language	Result	Execution time	Memory
995376		aaaaaarroz	Digital Circuit (IOI22_circuit)	C++17	0 / 100	3038 ms	4160 KiB

circuit

#include <bits/stdc++.h>
using namespace std;
vector<vector<int>>graph;
vector<int>max_parameter;
vector<int>ways;
vector<int>state;
int n,m;
void dfs1(int nodo){
	if(nodo>=n){
		return;
	}
	for(int vecino:graph[nodo]){
		dfs1(vecino);
		if(vecino<n){
			max_parameter[nodo]+=(max_parameter[vecino]>=1);
		}
		else{
			max_parameter[nodo]+=(state[vecino-n]==1);
		}
	}
}
void dfs2(int nodo){
	if(nodo<n){
		ways[nodo]=max_parameter[nodo];
	}
	for(int vecino:graph[nodo]){
		dfs2(vecino);
		ways[nodo]*=ways[vecino];
	}
}
void init(int N, int M, vector<int> P, vector<int> A) {
	n=N;
	m=M;
	graph.resize(N+M,vector<int>());
	state=A;
	max_parameter.resize(N);
	ways.resize(N+M);
	for(int i=0;i<P.size();i++){
		if(P[i]!=-1){
			graph[P[i]].push_back(i);
		}
	}
}

int count_ways(int L, int R) {
  for(int i=L;i<=R;i++){
	  state[i-n]^=1;
  }
  dfs1(0);
  ways.resize(n+m,1);
  dfs2(0);
  return ways[0];
}

Compilation message (stderr)

circuit.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>)':
circuit.cpp:38:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |  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