Submission #1236265

#	Time	Username	Problem	Language	Result	Execution time	Memory
1236265		AMel0n	Digital Circuit (IOI22_circuit)	C++20	0 / 100	3047 ms	7452 KiB

circuit

// I'm a bit stupid (1)
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
#define FOR(i,N) for(ll i = 0; i < N; i++)
#define all(x) (x).begin(), (x).end()
#define F first 
#define S second

#include "circuit.h"

const ll MOD = 1000002022;

int N, M;
vector<vector<int>> C;
vector<int> A;
vector<vector<int>> dp;

void dfs(int n) {
    if (n >= N) {dp[n][A[n-N]] = 1; dp[n][!A[n-N]] = 0; return ;}
    for(int c: C[n]) {
        dfs(c);
    }
    dp[n][0] = dp[C[n][0]][0] * dp[C[n][1]][1] + dp[C[n][0]][1] * dp[C[n][1]][0] + 2 * dp[C[n][0]][0] * dp[C[n][1]][0];
    dp[n][1] = dp[C[n][0]][0] * dp[C[n][1]][1] + dp[C[n][0]][1] * dp[C[n][1]][0] + 2 * dp[C[n][0]][1] * dp[C[n][1]][1];
}

void init(int N, int M, std::vector<int> P, std::vector<int> A) {
    ::N = N;
    ::M = M;
    ::A = A;
    C.resize(N+M);
    dp.resize(N+M, vector<int>(2));
    for(int i = 1; i < N+M; i++) C[P[i]].push_back(i);
}

int count_ways(int L, int R) {
    for(int i = L-N; i <= R-N; i++) A[i] = !A[i];
    dfs(0);
    return dp[0][1];
}

• 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