제출 #964753

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
964753		steveonalex	Digital Circuit (IOI22_circuit)	C++17	18 / 100	3082 ms	8984 KiB

circuit

#include <bits/stdc++.h>
#include "circuit.h"

using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define ALL(v) (v).begin(), (v).end()
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
 
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng(1);
ll rngesus(ll l, ll r){return ((ull) rng()) % (r - l + 1) + l;}
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return mask & (-mask);}
ll pop_cnt(ll mask){return __builtin_popcountll(mask);}
ll ctz(ll mask){return __builtin_ctzll(mask);}
ll clz(ll mask){return __builtin_clzll(mask);}
ll logOf(ll mask){return 63 - clz(mask);}
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b){a = b; return true;}
        return false;
    }
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b){a = b; return true;}
        return false;
    }
template <class T>
    void printArr(T& a, string separator = " ", string finish = "\n", ostream& out = cout){
        for(auto i: a) out << i << separator;
        out << finish;
    }
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

const int N = 2e5 + 69, MOD = 1e9 + 2022;
int n, m;
vector<int> graph[N];
int dp[N][2];
int prod[N];

void init(int _n, int _m, vector<int> P, vector<int> A) {
    n = _n, m = _m;
    for(int i = 1; i<n+m; ++i){
        graph[P[i]].push_back(i);
    }

    for(int i = 0; i<m; ++i){
        prod[i+n] = 1;
        dp[i+n][A[i]] = 1;
    }
}   

void add(int &a, int b){
    a += b;
    if (a >= MOD) a -= MOD;
}

void sub(int &a, int b){
    a -= b;
    if (a < 0) a += MOD;
}

void go(int u, int p){
    if (u >= n) return;
    dp[u][0] = dp[u][1] = 0;
    prod[u] = graph[u].size();

    int sum = 1, pref = 1;

    for(int v: graph[u]) if (v != p){
        go(v, u);
        pref = (1LL * pref * (dp[v][0] + dp[v][1]) + 1LL * sum * dp[v][1]) % MOD;
        sum = 1LL * sum * (dp[v][0] + dp[v][1]) % MOD;
        prod[u] = 1LL * prod[u] * prod[v] % MOD;
    }

    dp[u][1] = pref;
    sub(dp[u][1], sum);
    dp[u][0] = prod[u];
    sub(dp[u][0], dp[u][1]);
}

int count_ways(int l, int r) {
    for(int i = l; i <= r; ++i){
        swap(dp[i][0], dp[i][1]);
    }

    go(0, 0);

    return dp[0][1];
}


// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//     int n, m; cin >> n >> m;
//     vector<int> P(n+m, -1);
//     for(int i = 1; i<n+m; ++i) cin >> P[i];
//     vector<int> A(m); 
//     for(int i = 0; i<m; ++i) cin >> A[i];

//     init(n, m, P, A);
//     int q; cin >> q;
//     while(q--){
//         int l, r; cin >> l >> r;
//         cout << count_ways(l, r) << "\n";
//     }


//     return 0;
// }

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