Submission #381736

#	Time	Username	Problem	Language	Result	Execution time	Memory
381736		mohamedsobhi777	운세 보기 2 (JOI14_fortune_telling2)	C++14	0 / 100	3 ms	2668 KiB

fortune_telling2

#include <bits/stdc++.h>

using namespace std;

#define vi vector<int>
#define vll vector<ll>
#define vii vector<pair<int, int>>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define loop(_) for (int __ = 0; __ < (_); ++__)
#define pb push_back
#define f first
#define s second
#define sz(_) ((int)_.size())
#define all(_) _.begin(), _.end()
#define lb lower_bound
#define ub upper_bound

using ll = long long;
using ld = long double;

const int N = 6e5 + 7;
const ll mod = 1e9 + 7;

int n, k;
int act[N];

struct fenwick
{
       int bit[N];
       fenwick()
       {
              memset(bit, 0, sizeof bit);
       }
       void add(int x, int v)
       {
              ++ x ; 
              for (; x < N; x += x & -x)
                     bit[x] += v;
       }
       int upto(int x)
       {
              ++ x; 
              int ret = 0;
              for (; x; x -= x & -x)
                     ret += bit[x];
              return ret;
       }
       inline int get(int l, int r) { return upto(r) - upto(l - 1); }
} f1;

int main()
{
       ios_base::sync_with_stdio(0);
       cin.tie(0);
#ifndef ONLINE_JUDGE
#endif
       cin >> n >> k;
       vii a(n);
       for (int i = 0; i < n; ++i)
              cin >> a[i].f >> a[i].s;
       vi b(k);
       for (auto &u : b)
              cin >> u;

       vector<int> v;
       for (auto u : a)
       {
              v.pb(u.f);
              v.pb(u.s);
       }
       for (auto u : b)
              v.pb(u);

       sort(all(v));

       v.erase(unique(all(v)), v.end());

       for (int i = 0; i < sz(v); ++i)
       {
              act[i] = v[i];
       }
       auto get = [&](int x) -> int {
              return lb(all(v), x) - v.begin();
       };
       for (int i = 0; i < n; ++i)
       {
              a[i].f = get(a[i].f);
              a[i].s = get(a[i].s);
       }
       for (auto &u : b)
              u = get(u);

       sort(all(a), [&](pii x, pii y) {
              return max(x.f, x.s) > max(y.f, y.s);
       });

       vii b2;
       for (int i = 0; i < k; ++i)
       {
              b2.push_back({b[i], i});
       }
       sort(all(b2));
       ll sum = 0 ; 
       for (int i = 0; i < n; ++i)
       {

              while (sz(b2) && b2.back().f >= a[i].f)
              {
                     f1.add(b2.back().s , 1) ; 
                     b2.pop_back();
              }

              int lst = -1 ;
              int L = min(a[i].f , a[i].s) ; 
              int R = max(a[i].f , a[i].s) ;  
              for(int j = 0 ;j < k ;++ j){
                     if( b[j] >= L && b[j] < R ){
                            lst = j ; 
                     }
              }

              if(~lst){
                     if(a[i].f < a[i].s) swap(a[i].f , a[i].s) ; 
                     if(f1.get(lst + 1, N - 2)&1){
                            swap(a[i].f , a[i].s) ; 
                     }
              }else{
                     if(f1.get(0 , N - 2)&1){
                            swap(a[i].f , a[i].s) ; 
                     }
       
              }
              sum += act[a[i].f] ; 
       }

       cout << sum;
       return 0;
}

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