Submission #965394

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
965394	2024-04-18 12:36:25	four_specks	Snake Escaping (JOI18_snake_escaping)	C++17	22 / 100	337 ms	65536 KiB

snake_escaping

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#include <bits/stdc++.h>
using namespace std;
namespace {}
void solve() {
  int h, q;
  cin >> h >> q;
  uint32_t n = 1 << h;
  string a;
  cin >> a;
  vector dp_sub(n, vector<int>(h + 1)), dp_super(n, vector<int>(h + 1));
  for (uint32_t x = 0; x < n; x++) {
    dp_sub[x][0] = a[x] - '0';
    for (int s = 0; s < h; s++) {
      dp_sub[x][s + 1] = dp_sub[x][s];
      if (x >> s & 1) {
        dp_sub[x][s + 1] += dp_sub[x ^ (1u << s)][s];
      }
    }
  }
  for (uint32_t x = n - 1; x + 1 > 0; x--) {
    dp_super[x][0] = a[x] - '0';
    for (int s = 0; s < h; s++) {
      dp_super[x][s + 1] = dp_super[x][s];
      if (!(x >> s & 1)) {
        dp_super[x][s + 1] += dp_super[x | (1u << s)][s];
      }
    }
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 0 / 53
• Subtask 5: 0 / 25