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Submission #1113340

# Submission time Handle Problem Language Result Execution time Memory
1113340 2024-11-16T12:04:06 Z emad234 Snake Escaping (JOI18_snake_escaping) C++17
12 / 100
 2000 ms 65536 KB 
#include "bits/stdc++.h"
#define F first
#define S second
#define ll long long
#define pii pair<ll,int>
const int mxN = (1 << 20) + 5;
const int mod = 1e9 + 7;
using namespace std;
int sos[mxN][23][2];
signed main(){
 // ios_base::sync_with_stdio(0);
 // cin.tie(0);
 // cout.tie(0);
  int n,q;
  cin >>n>>q;
  string s;
  cin>>s;
  for(int i = 0;i < n;i++){
    for(int mask = 0;mask < (1 << n);mask++){
      sos[mask][0][0] = s[mask] - '0';
  if(mask % 2) sos[mask][0][0] += s[mask - 1] - '0';
      sos[mask][0][1] = s[mask] - '0';
  if(mask % 2 == 0) sos[mask][0][1] += s[mask + 1] - '0';
      if(!i) continue;
      sos[mask][i][0] = sos[mask][i - 1][0];
      sos[mask][i][1] = sos[mask][i - 1][1];
      if(mask >> i & 1) sos[mask][i][0] += sos[mask - (1 << i)][i - 1][0];
      else sos[mask][i][1] += sos[mask + (1 << i)][i - 1][1];
    }
  }
  while(q--){
    string a;
    cin >>a;
    reverse(a.begin(),a.end());
    int Qcnt = 0, Ocnt = 0, Icnt = 0;
    for(auto x : a){
      if(x == '?') Qcnt++;
      else if(x == '1') Icnt++;
      else Ocnt++;
    }
    int ans = 0;
    if(min({Qcnt,Ocnt,Icnt}) == Qcnt){
      // printf("? small\n");
      for(int mask = 0;mask < (1 << Qcnt);mask++){
        int cnt = 0;
        int num = 0;
        int i = 0;
        for(auto x : a){
          if(x == '?') {
            if(mask >> cnt & 1) num += (1 << i);
              cnt++;
          }
          if(x == '1') num += (1 << i);
          i++;
        }
        ans += s[num] - '0';
      }
    }else if(min({Qcnt,Ocnt,Icnt}) == Icnt){
      // printf("1 small\n");
      for(int mask = 0; mask < (1 << Icnt);mask++){
        int cnt = 0;
        int num = 0;
        int i = 0;
        for(auto x : a){
          if(x == '1') {
            if(mask >> cnt & 1) num += (1 << i);
              cnt++;
          }
          if(x == '?') num += (1 << i);
          i++;
        }
        if(Icnt % 2 == __builtin_popcount(mask) % 2) ans += sos[num][n - 1][0];
        else ans -= sos[num][n - 1][0];
      }
    }else{
      for(int mask = 0; mask < (1 << Ocnt);mask++){
        // printf("0 small\n");
        int cnt = 0;
        int num = 0;
        int i = 0;
        for(auto x : a){
          if(x == '0') {
            if(mask >> cnt & 1) num += (1 << i);
              cnt++;
          }
          if(x == '1') num += (1 << i);
          // if(x == '?') num += (1 << i);
          i++;
        }
        if(0 == __builtin_popcount(mask) % 2) ans += sos[num][n - 1][1];
        else ans -= sos[num][n - 1][1];
      }
    }
    cout<<ans<<'\n';
  }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 592 KB Output is correct
2 Correct 3 ms 460 KB Output is correct
3 Correct 3 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 3 ms 592 KB Output is correct
6 Correct 4 ms 592 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 3 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 3 ms 592 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 592 KB Output is correct
2 Correct 3 ms 460 KB Output is correct
3 Correct 3 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 3 ms 592 KB Output is correct
6 Correct 4 ms 592 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 3 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 3 ms 592 KB Output is correct
11 Correct 1770 ms 15144 KB Output is correct
12 Correct 1797 ms 14876 KB Output is correct
13 Correct 1791 ms 14276 KB Output is correct
14 Correct 1878 ms 14152 KB Output is correct
15 Correct 1790 ms 15176 KB Output is correct
16 Correct 1943 ms 14396 KB Output is correct
17 Correct 1883 ms 14456 KB Output is correct
18 Correct 1683 ms 16364 KB Output is correct
19 Correct 1780 ms 13128 KB Output is correct
20 Correct 1784 ms 15040 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 592 KB Output is correct
2 Correct 3 ms 460 KB Output is correct
3 Correct 3 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 3 ms 592 KB Output is correct
6 Correct 4 ms 592 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 3 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 3 ms 592 KB Output is correct
11 Correct 1770 ms 15144 KB Output is correct
12 Correct 1797 ms 14876 KB Output is correct
13 Correct 1791 ms 14276 KB Output is correct
14 Correct 1878 ms 14152 KB Output is correct
15 Correct 1790 ms 15176 KB Output is correct
16 Correct 1943 ms 14396 KB Output is correct
17 Correct 1883 ms 14456 KB Output is correct
18 Correct 1683 ms 16364 KB Output is correct
19 Correct 1780 ms 13128 KB Output is correct
20 Correct 1784 ms 15040 KB Output is correct
21 Correct 1837 ms 19620 KB Output is correct
22 Correct 1894 ms 19660 KB Output is correct
23 Execution timed out 2041 ms 17748 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #4
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 592 KB Output is correct
2 Correct 3 ms 460 KB Output is correct
3 Correct 3 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 3 ms 592 KB Output is correct
6 Correct 4 ms 592 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 3 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 3 ms 592 KB Output is correct
11 Runtime error 58 ms 65536 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 592 KB Output is correct
2 Correct 3 ms 460 KB Output is correct
3 Correct 3 ms 592 KB Output is correct
4 Correct 3 ms 592 KB Output is correct
5 Correct 3 ms 592 KB Output is correct
6 Correct 4 ms 592 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 3 ms 592 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 3 ms 592 KB Output is correct
11 Correct 1770 ms 15144 KB Output is correct
12 Correct 1797 ms 14876 KB Output is correct
13 Correct 1791 ms 14276 KB Output is correct
14 Correct 1878 ms 14152 KB Output is correct
15 Correct 1790 ms 15176 KB Output is correct
16 Correct 1943 ms 14396 KB Output is correct
17 Correct 1883 ms 14456 KB Output is correct
18 Correct 1683 ms 16364 KB Output is correct
19 Correct 1780 ms 13128 KB Output is correct
20 Correct 1784 ms 15040 KB Output is correct
21 Correct 1837 ms 19620 KB Output is correct
22 Correct 1894 ms 19660 KB Output is correct
23 Execution timed out 2041 ms 17748 KB Time limit exceeded
24 Halted 0 ms 0 KB -