Submission #389964

#	Time	Username	Problem	Language	Result	Execution time	Memory
389964		abc864197532	Binary Subsequences (info1cup17_binary)	C++17	82 / 100	1090 ms	356 KiB

binary

#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define test(x) cout << #x << ' ' << x << endl
#define printv(x) { \
    for (auto a : x) cout << a << ' '; \
    cout << endl; \
}
#define pii pair<int, int>
#define pll pair<lli, lli>
#define X first
#define Y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
const int N = 512, abc = 864197532;

int chk(int l, int r) {
    if (__gcd(l, r) > 1) return 1 << 30;
    int len = 0;
    while (l > 1 && r > 1) {
        len++;
        if (l > r) {
            l -= r;
        } else {
            r -= l;
        }
    }
    return len + r + l - 2;
}

string gen(int l, int r) {
    string ans;
    while (l > 1 || r > 1) {
        if (l > r) {
            ans += "1 ";
            l -= r;
        } else {
            ans += "0 ";
            r -= l;
        }
    }
    return ans;
}

int main () {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int t;
    cin >> t;
    while (t--) {
        int x;
        cin >> x;
        int ans1 = 0, ans2 = 1 << 30, bestl = -1;
        for (int l = 1; l < x + 2 - l; ++l) {
            int re = chk(l, x + 2 - l);
            if (re != 1 << 30) {
                ans1++;
                if (ans2 > re) {
                    bestl = l;
                    ans2 = re;
                }
            }
        }
        cout << ans1 * 2 << '\n' << gen(bestl, x + 2 - bestl) << '\n';
    }
}

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