Submission #272333

#	Time	Username	Problem	Language	Result	Execution time	Memory
272333		theStaticMind	Binary Subsequences (info1cup17_binary)	C++14	82 / 100	1095 ms	3284 KiB

binary

#include<bits/stdc++.h>
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
#define int long long int
using namespace std;

bool f(int x, int y, string& s){
	if(x == 0 && y == 0) return true;
	if(x == y) return false;
	if(x > y){
		s.pb('0');
		return f(x - y - 1, y, s);
	}
	else{
		s.pb('1');
		return f(x, y - x - 1, s);
	}
}

int32_t main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int q;
	cin >> q;
	while(q--){
		int k, ans = 0;
		cin >> k;

		string s;

		for(int i = 0; i <= k/2; i++){
			string t;
			if(f(i, k - i, t)){
				ans += 2;
				if(s.empty() || sz(s) > sz(t)) swap(s, t);
			}
		}

		cout << ans << "\n";
		reverse(all(s));
		for(auto p : s) cout << p << " ";
		cout << "\n";
	}
}

• Subtask 1: 43 / 43
• Subtask 2: 39 / 39
• Subtask 3: 0 / 18