Submission #137414

#	Time	Username	Problem	Language	Result	Execution time	Memory
137414		MladenP	Fortune Telling 2 (JOI14_fortune_telling2)	C++17	4 / 100	63 ms	3696 KiB

fortune_telling2

#include<bits/stdc++.h>
#define STIZE(x) fprintf(stderr, "STIZE%d\n", x);
#define PRINT(x) fprintf(stderr, "%s = %d\n", #x, x);
#define NL(x) printf("%c", " \n"[(x)]);
#define lld long long
#define pii pair<int,int>
#define pb push_back
#define fi first
#define se second
#define mid (l+r)/2
#define endl '\n'
#define all(a) begin(a),end(a)
#define sz(a) int((a).size())
#define LINF 1000000000000000LL
#define INF 1000000000
#define EPS 1e-9
using namespace std;
#define MAXN 200010
int N, K, a[MAXN], b[MAXN], t[MAXN];
int seg[4*MAXN];
void update(int node, int l, int r, int idx, int val) {
    if(l == r) {
        seg[node] = val;
        return;
    }
    if(idx <= mid) update(2*node, l, mid, idx, val);
    else update(2*node+1, mid+1, r, idx, val);
    seg[node] = max(seg[2*node], seg[2*node+1]);
}
int query(int node, int l, int r, int L, int R) {
    if(r < l || R < L || r < L || R < l) return 0;
    if(L <= l && r <= R) return seg[node];
    int rez = 0;
    if(L <= mid) rez = max(rez, query(2*node, l, mid, L, R));
    if(R > mid) rez = max(rez, query(2*node+1, mid+1, r, L, R));
    return rez;
}
int bit[MAXN];
void update(int idx, int val) {
    while(idx < MAXN) {
        bit[idx] += val;
        idx += idx&-idx;
    }
}
int query(int idx) {
    int rez = 0;
    while(idx) {
        rez += bit[idx];
        idx -= idx&-idx;
    }
    return rez;
}
vector<pii> T, B;
int bsL(int key) {
    int l = 1, r = K, rez = K+1;
    while(l <= r) {
        if(T[mid].fi >= key) rez = mid, r = mid-1;
        else l = mid+1;
    }
    return rez;
}
int bsR(int key) {
    int l = 1, r = K, rez = 0;
    while(l <= r) {
        if(T[mid].fi <= key) rez = mid, l = mid+1;
        else r = mid-1;
    }
    return rez;
}
int sred[MAXN];
int main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0); cerr.tie(0);
    cin >> N >> K;
    for(int i = 1; i <= N; i++) cin >> a[i] >> b[i];
    for(int i = 1; i <= K; i++) cin >> t[i];
    T.pb({-INF, -INF}); B.pb({-INF, -INF});
    for(int i = 1; i <= N; i++) B.pb({max(a[i], b[i]), i});
    for(int i = 1; i <= K; i++) T.pb({t[i], i});
    sort(all(T));
    sort(all(B));
    for(int i = 1; i <= K; i++) {
        update(1, 1, K, i, T[i].se);
    }
    lld rez = 0;
    for(int i = 1; i <= N; i++) {
        int L = bsL(min(a[i], b[i])), R = bsR(max(a[i], b[i])-1);
        sred[i] = query(1, 1, K, L, R);
    }
    int cb = N, ct = K;
    while(cb > 0 || ct > 0) {
        int mode;
        if(cb == 0) mode = 0;
        else if(ct == 0) mode = 1;
        else mode = (B[cb] > T[ct]);
        if(mode == 0) {
            update(T[ct].se, +1);
            ct--;
        } else {
            int vece = (query(MAXN-1)-query(sred[B[cb].se]))%2;
            int idx = B[cb].se;
            if(sred[idx] == 0) {
                if(vece == 1) rez += b[idx];
                else rez += a[idx];
            } else {
                if(vece == 1) rez += min(a[idx], b[idx]);
                else rez += max(a[idx], b[idx]);
            }
            cb--;
        }
    }
    cout << rez;
}

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