Submission #1152512

#	Time	Username	Problem	Language	Result	Execution time	Memory
1152512		dzuizz	Trobojnica (COCI19_trobojnica)	C++20	0 / 110	63 ms	320 KiB

trobojnica

#include<bits/stdc++.h>
using namespace std;
#define int long long
int n;
map<string,bool> mp;
void f(string s){
	if((int)s.size()==n){
		mp[s]=1;
		return;
	}
	string a,b;
	for(int i=0;i<(int)s.size();++i){
		int x=s[i]-'0';
		if(x==1) a="23",b="32";
		else if(x==2) a="13",b="31";
		else a="12",b="21";
		f(s.substr(0,i)+a+s.substr(i+1,s.size()-i-1));
		f(s.substr(0,i)+b+s.substr(i+1,s.size()-i-1));
	}
}
signed main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin>>n;
	f("123");
	f("132");
	f("213");
	f("231");
	f("312");
	f("321");
	string S; cin>>S;
	cout<<(mp[S]?"DA\n":"NE\n");
	return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50