제출 #535670

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
535670	2022-03-10 21:44:48	iliaM	Snake Escaping (JOI18_snake_escaping)	C++17	100 / 100	1657 ms	24648 KiB

snake_escaping

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#pragma GCC optimize("O3,no-stack-protector,unroll-loops")
#pragma GCC target("avx2,fma")
#include <bits/stdc++.h>
using namespace std;
#define cerr cerr << "DEBUG "
constexpr int N = (1 << 20) + 10;
int a[N], f[N], g[N], h[N];
int n, m;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  
  cin >> n >> m;
  for (int i = 0; i < (1 << n); ++i) {
    char c;
    cin >> c;
    a[i] = c - '0';
  }
  
  int comp = (1 << n) - 1;
  for (int i = 0; i < (1 << n); ++i) {
    f[i] = g[i ^ comp] = a[i];
  }
  for (int i = 0; i < n; ++i) {
    for (int mask = 0; mask < (1 << n); ++mask) {
      if ((mask >> i) & 1) {
        f[mask] += f[mask ^ (1 << i)];
 
 
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• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 53 / 53
• Subtask 5: 25 / 25