Submission #944237

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
944237	2024-03-12 12:10:14	guechotjrhh	Snake Escaping (JOI18_snake_escaping)	C++14	100 / 100	1798 ms	46504 KiB

snake_escaping

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#include<iostream>
#include<string>
using namespace std;
#include<string>
#include<vector>
#include<algorithm>
#define maxp 1048580
using namespace std;
int st[maxp],n,p,res,zer[maxp], on[maxp], cnt[maxp];
int ab(int x) { return x > 0 ? x : -x; }
void init(int N, int Q, string S) {
  n = N; p = 1 << n;
  for (int i = 0; i < p; i++) zer[i] = on[i] = st[i] = S[i] - '0';
  for (int i = 1; i < p; i<<=1) {
    for (int j = 0; j < p; j++) {
      if (j & i) zer[j] += zer[j ^ i];
      else on[j] += on[j ^ i];
    }
  }
  cnt[0] = 0;
  for (int i = 0; i < p/2; i++) {
    cnt[i << 1] = cnt[i];
    cnt[(i << 1) + 1] = cnt[i] + 1;
  }
}
int o[20], z[20], q[20];
int oc, zc, qc;
void rec1(int i, int c, int a) {
  if (i == oc) {res += (a^zer[c]) + (a & 1);return;}
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 53 / 53
• Subtask 5: 25 / 25