Submission #159656

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
159656	2019-10-23T18:25:16 Z	GioChkhaidze	Snake Escaping (JOI18_snake_escaping)	C++14	Compilation error	0 ms	0 KB

snake_escaping

#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;

int n,q,C[1148576],M[20],dp[1794323],vs;
pair < int  , int > v[1794323];

main () { 
	ios::sync_with_stdio(false);
	cin.tie(false);
	cin>>n>>q;
	
	M[0]=1;
	for (int i=1; i<=n; i++) 
		M[i]=M[i-1]*3;
	
	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,rs=0;
		for (int j=n-1; j>=0; j--) 
			if (x-2*M[j]>=0) x-=2*M[j],rs++; 
				else
			if (x-M[j]>=0) x-=M[j];
		
		v[++vs].F=rs;
		v[vs].S=i;
	}	
	
	sort(v+1,v+vs+1);
	
	for (int i=1; i<=vs; i++) {
		int x=v[i].S;	
		for (int j=n-1; j>=0; j--) {
			if (x-2*M[j]>=0) {
				x-=2*M[j];
				if (dp[v[i].S]<(dp[v[i].S-2*M[j]]+dp[v[i].S-M[j]])) 
					dp[v[i].S]=(dp[v[i].S-2*M[j]]+dp[v[i].S-M[j]]);	
			}
				else
			if (x-M[j]>=0) x-=M[j];
		}
	}
	
	for (int i=1; i<=q; i++) {
		string s;
		int x=0;
		cin>>s;	
				
		for (int j=0; j<s.size(); j++) {
			if (s[s.size()-j-1]=='?') x+=2*M[j];	
				else
			if (s[s.size()-j-1]=='1') x+=M[j];
		}
		
		cout<<dp[x]<<endl;
	}
}

Compilation message

snake_escaping.cpp:9:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () { 
       ^
snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:11:15: error: no matching function for call to 'std::basic_istream<char>::tie(bool)'
  cin.tie(false);
               ^
In file included from /usr/include/c++/7/ios:44:0,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from snake_escaping.cpp:1:
/usr/include/c++/7/bits/basic_ios.h:295:7: note: candidate: std::basic_ostream<_CharT, _Traits>* std::basic_ios<_CharT, _Traits>::tie() const [with _CharT = char; _Traits = std::char_traits<char>]
       tie() const
       ^~~
/usr/include/c++/7/bits/basic_ios.h:295:7: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/7/bits/basic_ios.h:307:7: note: candidate: std::basic_ostream<_CharT, _Traits>* std::basic_ios<_CharT, _Traits>::tie(std::basic_ostream<_CharT, _Traits>*) [with _CharT = char; _Traits = std::char_traits<char>]
       tie(basic_ostream<_CharT, _Traits>* __tiestr)
       ^~~
/usr/include/c++/7/bits/basic_ios.h:307:7: note:   no known conversion for argument 1 from 'bool' to 'std::basic_ostream<char>*'
snake_escaping.cpp:60:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j=0; j<s.size(); j++) {
                 ~^~~~~~~~~