제출 #797973

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
797973		gesgha	디지털 회로 (IOI22_circuit)	C++17	18 / 100	3076 ms	9140 KiB

circuit

#include "circuit.h"
#include <bits/stdc++.h>
 
#define fr(i, a, b) for(int i = a; i <= b; i++)
#define rf(i, a, b) for(int i = a; i >= b; i--)
#define fe(x, y) for (auto& x : y)
 
#define fi first
#define se second
#define pb push_back
 
#define all(x) x.begin(), x.end()
#define pw(x) (1LL << (x))
#define sz(x) (int)x.size()
 
using namespace std;
 
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define fbo find_by_order
#define ook order_of_key
template <typename T>
using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
template <typename T>
using ve = vector <T>;
 
template <typename T>
bool umx (T& a, T b) { return a < b ? a = b, 1 : 0; }
 
template <typename T>
bool umn (T& a, T b) { return a > b ? a = b, 1 : 0; }
 
using ll = long long;
using ld = long double;
using pll = pair <ll, ll>;
using pii = pair <int, int>;
using ull = unsigned long long;
 
const int oo = 1e9;
const ll OO = 1e18;
const int N = 2e5 + 10;
const int M = 5e3 + 100;
const int mod = 1e9 + 2022;

int a[N];
int dp[N][2];
int n, m;

int add(int a, int b) {
  return a + b < mod ? a + b : a + b - mod;
}
int mul (int a, int b) {
  return 1LL * a * b % mod;
}
ve <int> G[N];

void calc(int u) {
  if (!sz(G[u])) {
    if(a[u]) {
      dp[u][0] = 0;
      dp[u][1] = 1;
    } else {
      dp[u][0] = 1;
      dp[u][1] = 0;
    }
    return;
  }
  for (auto to : G[u]) calc(to);
  
  ve <ve <int>> d(sz(G[u]) + 1);

  fe (x, d) x.resize(sz(G[u]) + 1);

  d[0][0] = 1;

  for (int i = 0; i < sz(G[u]); i++) {
    int to = G[u][i];
    for (int cnt_al = 0; cnt_al <= i; cnt_al++) {
      d[i + 1][cnt_al + 1] = add(d[i + 1][cnt_al + 1], mul(d[i][cnt_al], dp[to][1]));
      d[i + 1][cnt_al] = add(d[i + 1][cnt_al], mul(d[i][cnt_al], dp[to][0]));
    }
  }
  dp[u][0] = dp[u][1] = 0;
  for (int cnt_al = 0; cnt_al <= sz(G[u]); cnt_al++) {
    dp[u][1] = add(dp[u][1], mul(d[sz(G[u])][cnt_al], max(0, cnt_al)));
    dp[u][0] = add(dp[u][0], mul(d[sz(G[u])][cnt_al], sz(G[u]) - cnt_al));
  }
}


void init(int N, int M, std::vector<int> P, std::vector<int> A) {
  n = N;
  m = M;
  for (int i = 0; i < M; i++) a[i + N] = A[i];
  for (int i = 1; i < N + M; i++) G[P[i]].pb(i);
}

int count_ways(int L, int R) {
  for (int i = L; i <= R; i++) a[i] = 1 - a[i];
  calc(0);
  return dp[0][1];
}

• 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