Submission #433588

#	Time	Username	Problem	Language	Result	Execution time	Memory
433588		hhhhaura	Binary Subsequences (info1cup17_binary)	C++14	100 / 100	795 ms	348 KiB

binary

#define wiwihorz
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma loop-opt(on)

#define rep(i, a, b) for(int i = a; i <= b; i ++)
#define rrep(i, a, b) for(int i = b; i >= a; i--)
#define all(x) x.begin(), x.end()
#define ceil(a, b) ((a + b - 1) / (b))

#define INF 1000000000000000000
#define MOD 1000000007
#define eps (1e-9)

using namespace std;

#define int long long int
#define lld long double
#define pii pair<int, int>
#define random mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count())

#ifdef wiwihorz
#define print(a...) kout("[" + string(#a) + "] = ", a) 
void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
void kout() { cerr << endl; }
template<class T1, class ... T2> void kout(T1 a, T2 ... e) { cerr << a << " ", kout(e...); }
#else
#define print(...) 0
#define vprint(...) 0
#endif
namespace solver {
	stack<int> ans;
	int count(int a, int b) {
		if(a == 0 && b == 0) return 0;
		if(a == b) return -1;
		if(a > b) {
			int k = a / (b + 1), ans = count(a - (b + 1) * k, b);
			return (ans == -1 ? -1 : ans + k);
		}
		else {
			int k = b / (a + 1), ans = count(a, b - (a + 1) * k);
			return (ans == -1 ? -1 : ans + k);
		}	
	}
 	void trace(int a, int b) {
 		if(a == 0 && b == 0) return;
		if(a > b) ans.push(0), trace(a - b - 1, b);
		else ans.push(1), trace(a, b - a - 1);
 	} 
	void solve(int k) {
		int id = -1, best = INF, cnt = 0;
		rep(i, 0, k) {
			int cur = count(i, k - i);
			cnt += bool(cur != -1);
			if(cur != -1 && best > cur) best = cur, id = i;
		}	
		trace(id, k - id);
		cout << cnt << "\n";
		while(ans.size()) {
			int cur = ans.top(); ans.pop();
			cout << cur << " \n"[ans.empty()];
		}
	}		
};
using namespace solver;
signed main() {
	ios::sync_with_stdio(false), cin.tie(0);
	int t; cin >> t;
	while(t --) {
		int k; cin >> k;
		solve(k);
	}
	return 0;
}

Compilation message (stderr)

binary.cpp:4: warning: ignoring '#pragma loop ' [-Wunknown-pragmas]
    4 | #pragma loop-opt(on)
      | 
binary.cpp:24:13: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
      |             ^~~~
binary.cpp:24:21: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   24 | void vprint(auto L, auto R) { while(L < R) cerr << *L << " \n"[next(L) == R], ++L;}
      |                     ^~~~

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