Submission #159806

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
159806	2019-10-24 20:32:06	GioChkhaidze	Snake Escaping (JOI18_snake_escaping)	C++14	22 / 100	2043 ms	57768 KiB

snake_escaping

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#include <bits/stdc++.h>
using namespace std;
int n,q,C[(1<<21)],M[20],dp[2594323],ANS[1000006],vs;
string S[1000006];
main () { 
  ios::sync_with_stdio(false);
  cin>>n>>q;
  
  M[0]=1;
  for (int i=1; i<=13; i++) 
    M[i]=M[i-1]*3;
  
  if (n<=13) {  
    
    for (int i=0; i<(1<<n); i++) {
      char c;
      cin>>c;
      C[i]=c-'0';
      
      int x=0;
      for (int j=0; j<n; j++) 
        if (i&(1<<j)) x+=M[j];
      dp[x]+=C[i];
    }
    
    for (int i=0; i<M[n]; i++) {
      int x=i;
      for (int j=n-1; j>=0; j--) 
        if (x-2*M[j]>=0) x-=2*M[j],dp[i]=(dp[i-2*M[j]]+dp[i-M[j]]); 
          else
 
 
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Compilation message (stderr)

snake_escaping.cpp:5:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () { 
       ^
snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:39:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j=0; j<s.size(); j++) 
                  ~^~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 0 / 53
• Subtask 5: 0 / 25