Submission #897571

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
897571	2024-01-03 12:32:38	avighna	Snake Escaping (JOI18_snake_escaping)	C++17	100 / 100	1969 ms	45300 KiB

snake_escaping

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
const ll N = 20;
ll dp[1 << N], dp2[1 << N];
ll cnt[256];
void get_locs(string &t, vector<ll> &loc, ll &val, char ch, bool q) {
  for (ll i = 0; i < t.length(); ++i) {
    if (t[i] == ch) {
      loc.push_back(t.length() - i - 1);
    }
    val += (1 << (t.length() - i - 1)) * (t[i] == '1' || (q && t[i] == '?'));
  }
}
void populate(queue<pair<ll, ll>> &q, vector<ll> &loc, ll val, ll n) {
  q.push({val, -1});
  for (ll i = 0; i < n; ++i) {
    ll sz = q.size();
    while (sz--) {
      ll v = q.front().first;
      ll idx = q.front().second + 1;
      q.pop();
      q.push({v, idx});
      v ^= (1 << loc[idx]);
 
 
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Compilation message (stderr)

snake_escaping.cpp: In function 'void get_locs(std::string&, std::vector<long long int>&, long long int&, char, bool)':
snake_escaping.cpp:13:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |   for (ll i = 0; i < t.length(); ++i) {
      |                  ~~^~~~~~~~~~~~
snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:45:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   for (ll i = 0; i < s.length(); ++i) {
      |                  ~~^~~~~~~~~~~~
snake_escaping.cpp:64:11: warning: array subscript has type 'char' [-Wchar-subscripts]
   64 |       cnt[i]++;
      |           ^

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 53 / 53
• Subtask 5: 25 / 25