Submission #270524

#	Time	Username	Problem	Language	Result	Execution time	Memory
270524		Atill83	Binary Subsequences (info1cup17_binary)	C++14	100 / 100	349 ms	504 KiB

binary

#include <bits/stdc++.h>
#define ff first
#define ss second

using namespace std;
const long long INF = (long long) 1e18;
const int mod = (int) 1e9+7;
const int MAXN = (int) 3e5+5;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
ll n;

int gcd(int a, int b){
    if(a == b){
        return mod;
    }
    int st = 0;
    if(b > a) swap(a, b);
    while(b){
        st += a / (b + 1);
        a %= (b + 1);
        swap(a, b);
        if(a == b) return mod;
    }
    if(a){
        return st + a;
    }else
    {
        return mod;
    }
}



void solve(){
    ll k;
    cin>>k;
    ll ans = 0;
    int mnSt = mod;
    int mnx = -1;
    for(int i = 0; i <= k / 2; i++){
        int st = gcd(i, k - i);
        if(st <= k + 1){
            ans += 2;
            if(st < mnSt){
                mnSt = st;
                mnx = i;
            }
        }
    }
    cout<<ans<<endl;
    int x = mnx, y = k - mnx;
    vector<int> res;

    while(x || y){
        
        if(x > y){
            res.push_back(1);
            x = x - (y + 1);
        }else{
            res.push_back(0);
            y = y - (x + 1);
        }
    }
    for(int j = res.size() - 1; j >= 0; j--) 
        cout<<res[j]<<" ";
    cout<<endl;
}


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);

    #ifdef Local
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/int.txt","r",stdin);
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/out.txt","w",stdout);
    #endif

    int t;
    cin>>t;

    while(t--) solve();
    

    #ifdef Local
        cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

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