Submission #1063201

#	Time	Username	Problem	Language	Result	Execution time	Memory
1063201		jer033	Digital Circuit (IOI22_circuit)	C++17	46 / 100	3078 ms	267600 KiB

circuit

#include "circuit.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll MOD =  1'000'002'022;

int n, m;
vector<ll> storage;
vector<int> a;

void init(int N, int M, std::vector<int> P, std::vector<int> A) {
    n = N;
    m = M;
    vector<ll> degrees(N, 0);
    for (int i=1; i<(N+M); i++)
        degrees[P[i]]++;
    vector<vector<bool>> ancestor(N+M, vector<bool> (N, 0));
    for (int i=1; i<(N+M); i++)
    {
        int par = P[i];
        for (int j=0; j<N; j++)
            ancestor[i][j] = ancestor[par][j];
        ancestor[i][par] = 1;
    }
    for (int i=N; i<(N+M); i++)
    {
        a.push_back(A[i-N]);
        ll ans = 1;
        for (int j = 0; j<N; j++)
            if (ancestor[i][j] == 0)
                ans = (ans*degrees[j])%MOD;
        storage.push_back(ans);
    }

}

int count_ways(int L, int R) {
    L -= n;
    R -= n;
    for (int i=L; i<=R; i++)
        a[i] = 1-a[i];
    ll total = 0;
    for (int i=0; i<m; i++)
    {
        if (a[i]==1)
            total = total+storage[i];
    }
    ll fa = total%MOD;
    int ffa = fa;
    return ffa;
}

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