Submission #377568

#	Time	Username	Problem	Language	Result	Execution time	Memory
377568		kartel	Specijacija (COCI20_specijacija)	C++14	0 / 110	4136 ms	830104 KiB

Main

#include <bits/stdc++.h>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
//#include <time.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
#define F first
#define S second
#define pb push_back
//#define M ll(1e9 + 7)
#define M ll(998244353)
#define sz(x) (int)x.size()
#define re return
#define oo ll(1e18)
#define el '\n'
#define pii pair <int, int>
#define all(x) (x).begin(), (x).end()
#define arr_all(x, n) (x + 1), (x + 1 + n)
#define vi vector<int>
#define eps (ld)1e-9
using namespace std;
typedef long long ll;
//using namespace __gnu_pbds;
//typedef tree <ll, null_type, less_equal <ll> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef double ld;
typedef unsigned long long ull;
typedef short int si;

const int N = (1000 + 1) * (1000 + 2) + 50;

const int MAXN = 2e5 + 50;

int n, q, t;
map <ll, int> mp;

ll get(ll lvl, ll pos) {return (lvl * (lvl - 1)) / 2ll + 1 + pos;}

ll geth(ll x) {
    ll l = 1;
    ll r = n + 1;

    while (l < r) {
        ll md = (l + r + 1) / 2ll;

        if (md * (md - 1) / 2ll < x) {
            l = md;
        }
        else {
            r = md - 1;
        }
    }

    return r;
}

ll getpr(ll v, ll h) {
    ll nm = v - (h * (h - 1) / 2ll + 1);

    if (nm) {
        ll pr1 = get(h - 1, nm - 1);
        ll pr2 = get(h - 1, nm);

        if (mp[pr1]) {
            return pr1;
        }
        else {
            return pr2;
        }
    }
    else {
        return get(h - 1, nm);
    }
}

int main()
{
//    mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());;
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
//	in("toys.in");
//	out("toys.out");
//    in("input.txt");
//    out("output.txt");
//    cerr.precision(9); cerr << fixed;

//    clock_t tStart = clock();

    cin >> n >> q >> t;
    for (int i = 1; i <= n; i++) {
        ll a;
        cin >> a;

        mp[a] = 1;
    }

    while (q--) {
        ll x, y;
        cin >> x >> y;

        ll hx = geth(x);
        ll hy = geth(y);

        while (hx < hy) {
            y = getpr(y, hy--);
        }

        while (hx > hy) {
            x = getpr(x, hx--);
        }


        while (x != y) {
            x = getpr(x, hx--);
            y = getpr(y, hy--);
        }

        cout << x << el;
    }
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 30
• Subtask 4: 0 / 60