Submission #940388

#	Time	Username	Problem	Language	Result	Execution time	Memory
940388		Amirreza_Fakhri	Fortune Telling 2 (JOI14_fortune_telling2)	C++17	0 / 100	4 ms	8796 KiB

fortune_telling2

// In the name of the God
#include <bits/stdc++.h>
#define ll long long
// #define int long long
#define pb push_back
#define F first
#define S second
#define mp make_pair
#define pii pair <int, int>
#define smin(x, y) (x) = min((x), (y))
#define smax(x, y) (x) = max((x), (y))
#define all(x) (x).begin(), (x).end()
using namespace std;

// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2")

const int inf = 1e9+7;
const int mod = 998244353;
const int maxn = 2e5+5;

int n, k, a[maxn], b[maxn], t[maxn], mx[maxn*4];
vector <pii> v1, v2;
vector <int> fen[maxn];

void build1() {
    for (int i = 0; i < k; i++) {
        for (int j = k-i; j <= k; j += j&(-j)) fen[j-1].pb(v1[i].S);
    }
    for (int i = 0; i < k; i++) sort(all(fen[i]));
}

void build2(int l = 0, int r = k, int id = 1) {
    if (l+1 == r) {
        mx[id] = v2[l].S; return;
    }
    int mid = (l+r)/2;
    build2(l, mid, id*2), build2(mid, r, id*2+1);
    mx[id] = max(mx[id*2], mx[id*2+1]);
}

int get1(int i, int j) {
    int ans = 0;
    for (i = k-i; i; i &= i-1) {
        int p = lower_bound(all(fen[i-1]), j)-fen[i-1].begin();
        ans += fen[i-1].size()-p;
    }
    return ans;
}

int get2(int s, int e, int l = 0, int r = k, int id = 1) {
    if (s <= l and r <= e) return mx[id];
    int mid = (l+r)/2;
    if (e <= mid) return get2(s, e, l, mid, id*2);
    if (s >= mid) return get2(s, e, mid, r, id*2+1);
    return max(get2(s, e, l, mid, id*2), get2(s, e, mid, r, id*2+1));
}

int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> k;
    for (int i = 0; i < n; i++) cin >> a[i] >> b[i];
    for (int i = 0; i < k; i++) {
        cin >> t[i];
        v1.pb(mp(i, t[i]));
        v2.pb(mp(t[i], i));
    }
    sort(all(v2));
    build1(), build2();
    int ans = 0;
    for (int i = 0; i < n; i++) {
        if (a[i] == b[i]) ans += a[i];
        else if (a[i] < b[i]) {
            bool s = 0;
            int j = lower_bound(all(v2), mp(a[i], 0))-v2.begin();
            int k = lower_bound(all(v2), mp(b[i], 0))-v2.begin();
            int time = -1;
            if (j < k) {
                s = 1;
                time = get2(j, k);
            }
            s ^= get1(time+1, b[i])&1;
            if (s) ans += b[i];
            else ans += a[i];
            // cout << i << ' ' << s << '\n';
        }
        else {
            bool s = 0;
            int j = lower_bound(all(v2), mp(b[i], 0))-v2.begin();
            int k = lower_bound(all(v2), mp(a[i], 0))-v2.begin();
            int time = -1;
            if (j < k) time = get2(j, k);
            s ^= get1(time+1, a[i])&1;
            if (s) ans += b[i];
            else ans += a[i];
            // cout << i << ' ' << s << '\n';
        }
    }
    cout << ans << '\n';
    return 0;
}

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