Submission #1227619

#	Time	Username	Problem	Language	Result	Execution time	Memory
1227619		luka_zecevic	Fortune Telling 2 (JOI14_fortune_telling2)	C++20	0 / 100	0 ms	320 KiB

fortune_telling2

#include "bits/stdc++.h"
#define FAST ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define ff first
#define ss second
using namespace std;

const int N = 1e6 + 10;
int st[4 * N];

void update(int index, int l, int r, int val, int pos)
{
    if(l > r || l > pos || r < pos) return;
    if(l == r) { st[index] = val; return; }
    int mid = (l + r) / 2;
    update(index * 2, l, mid, val, pos); update(index * 2 + 1, mid + 1, r, val, pos);
    st[index] = max(st[index * 2], st[index * 2 + 1]);
}

int get(int index, int l, int r, int L, int R)
{
    if(l > r || l > R || r < L) return 0;
    if(l >= L && r <= R) return st[index];
    int mid = (l + r) / 2;
    return max(get(index * 2, l, mid, L, R), get(index * 2 + 1, mid + 1, r, L, R));
}


void upd(int index, int l, int r, int val, int pos)
{
    if(l > r || l > pos || r < pos) return;
    if(l == r) { st[index] = val; return; }
    int mid = (l + r) / 2;
    upd(index * 2, l, mid, val, pos); upd(index * 2 + 1, mid + 1, r, val, pos);
    st[index] = st[index * 2] + st[index * 2 + 1];
}

int gt(int index, int l, int r, int L, int R)
{
    if(l > r || l > R || r < L) return 0;
    if(l >= L && r <= R) return st[index];
    int mid = (l + r) / 2;
    return gt(index * 2, l, mid, L, R) + gt(index * 2 + 1, mid + 1, r, L, R);
}

bool comp(pair < pair < int , int > , int > a, pair < pair < int , int > , int > b)
{
    return a.ss > b.ss;
}

// long long solve(int& n, int& k, vector < pair < pair < int , int > , int > >& vp, vector < int >& t)

int main()
{
    FAST;
    int n, k; cin >> n >> k;
    vector < pair < pair < int , int > , int > > vp(n);
    for(int i = 0; i < n; i++)
    {
        cin >> vp[i].ff.ff >> vp[i].ff.ss;
    }


    vector < int > t(k);
    for(int i = 0; i < k; i++)
    {
        cin >> t[i];
        update(1, 1, N - 10, i + 1, t[i]);
    }

    for(int i = 0; i < n; i++) vp[i].ss = get(1, 1, N - 10, min(vp[i].ff.ff, vp[i].ff.ss) , max(vp[i].ff.ff, vp[i].ff.ss) - 1) - 1;
    // for(auto it : vp) cout << it.ss << " ";
    // cout << "!\n";
    sort(begin(vp), end(vp), comp);

    for(int i = 0; i < k; i++) update(1, 1, N - 10, 0, t[i]);

    int j = k - 1;
    long long ans = 0;
    for(int i = 0; i < n; i++)
    {
        while(j > vp[i].ss) { upd(1, 1, N - 10, 1, t[j]); j--; }

        int trn = gt(1, 1, N - 10, max(vp[i].ff.ff, vp[i].ff.ss), N - 10);
        // cout << " { { " << vp[i].ff.ff << " , " << vp[i].ff.ss << " } , " << vp[i].ss << " } -> ";
        // cout << "number of flips: " << trn << "\n";
        bool a = false;
        if(vp[i].ff.ff > vp[i].ff.ss)
        {
            if(trn % 2) a = !a;
        }
        else
        {
            a = (j != -1); // true -> b, false -> a
            if(trn % 2) a = !a;
        }

        ans += (a ? vp[i].ff.ss : vp[i].ff.ff);
    }
    cout << ans << "\n";
    return 0;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 31
• Subtask 3: 0 / 65