oj.uz

답안 #705504

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
705504 2023-03-04T14:26:50 Z danikoynov 디지털 회로 (IOI22_circuit) C++17
0 / 100
 686 ms 7856 KB 
#include "circuit.h"

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const ll mod = 1000002022;
const int maxn = 2e5 + 10;

int n, m, p[maxn], a[maxn];
vector < int > children[maxn];
ll dp[maxn][2], temp[maxn];

void update_state(int v)
{
    int c = children[v].size();
    for (int i = 0; i <= c; i ++)
        temp[i] = 0;

    temp[0] = 1;
    for (int u : children[v])
    {
        for (int i = c; i >= 0; i --)
        {
            temp[i] = (temp[i] * dp[u][0]) % mod;
            if (i > 0)
                temp[i] = (temp[i] + temp[i - 1] * dp[u][1]) % mod;
        }
    }


    for (int i = 0; i <= c; i ++)
    {
        dp[v][0] = (dp[v][0] + temp[i] * (ll)(c - i)) % mod;
        dp[v][1] = (dp[v][1] + temp[i] * (ll)(i)) % mod;
    }

}
void solve_state(int v)
{
    dp[v][0] = dp[v][1] = 0;

    if (v >= n)
    {
        dp[v][1] = a[v - n];
        dp[v][0] = 1 - dp[v][1];
        return;
    }

    for (int u : children[v])
    {
        solve_state(u);
    }

    update_state(v);
    ///cout << v << " " << dp[v][0] << " " << dp[v][1] << endl;


}
void init(int N, int M, std::vector<int> P, std::vector<int> A)
{
    n = N;
    m = M;
    for (int i = 0; i < N + M; i ++)
        p[i] = P[i];
    for (int i = 0; i < M; i ++)
        a[i] = A[i];

    for (int i = 1; i < N + M; i ++)
    {
        children[p[i]].push_back(i);
    }
}

int count_ways(int L, int R)
{
    if (L == R)
    {
        a[L - n] = ((a[L - n] + 1) & 1);
        int v = L;
        while(v != -1)
        {
            update_state(v);
            v = p[v];
        }
    }
    else
    {
        for (int i = L - n; i <= R - n; i ++)
            a[i] = ((a[i] + 1) & 1);

        solve_state(0);
    }
    return dp[0][1];
}

Subtask #1
0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 4944 KB 1st lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 4944 KB 1st lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 4944 KB 1st lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 686 ms 7856 KB 1st lines differ - on the 1st token, expected: '431985922', found: '0'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 686 ms 7856 KB 1st lines differ - on the 1st token, expected: '431985922', found: '0'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 4 ms 4944 KB 1st lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 4944 KB 1st lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 4944 KB 1st lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -