제출 #1190528

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1190528		Amr	Digital Circuit (IOI22_circuit)	C++20	18 / 100	11 ms	8712 KiB

circuit

#include "circuit.h"

#include <vector>
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define sz size()
#define F first
#define S second

const int W = 2003;
vector<int> a;
vector<ll> v[W];
ll dp[W][W];
pair<ll,ll> dpp[W];
ll mod =  1000002022, n , m;
void init(int N, int M, std::vector<int> P, std::vector<int> A) {
    a = A;
    n = N, m = M;
    for(int i = 1; i < N+M; i++)
    {
        v[P[i]].push_back(i);
    }
}
void go(ll &x)
{
    x = x%mod;
}

void dfs(ll x)
{
    if(v[x].sz==0)
    {
        if(a[x-n]) dpp[x].F = 1;
        else dpp[x].S = 1;
        return;
    }
    dp[x][0] = 1;
    for(int i = 0; i < v[x].sz; i++)
    {
        dfs(v[x][i]);
        for(int j = i+1; j>=0; j--)
        {
            dp[x][j] = dp[x][j]*dpp[v[x][i]].S;
            if(j>0) dp[x][j] += dp[x][j-1]*dpp[v[x][i]].F;
            go(dp[x][j]);
        }
    }
    ll sum = dp[x][0];
    ll all = 0;
    for(int i = 0; i <= v[x].sz; i++) all+= dp[x][i]; all%=mod;
    for(int i = 1; i <= v[x].sz; i++)
    {
        dpp[x].S += sum;
        dpp[x].F += (all-sum+mod)%mod;
        go(dpp[x].F); go(dpp[x].S);
        sum = (sum+dp[x][i])%mod;
    }
}

int count_ways(int L, int R) {
    for(int i = L; i <= R; i++) a[i-n] = !a[i-n];
    for(int i = 0; i < n + m; i++) {dpp[i] = {0,0}; for(int j = 0; j <= v[i].sz; j++) dp[i][j] = 0; }
    dfs(0);

   // for(int i = 0; i < n + m; i++)
     //   cout << dpp[i].F << " " << dpp[i].S << endl; cout << endl;
    //for(int i = 0; i < n+m; i++) { for(int j = 0; j <=v[i].sz; j++) cout << dp[i][j] << " "; cout << endl;}

    return dpp[0].F;

  return 0;
}

• 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: 0 / 28
• Subtask 8: 0 / 11