Submission #792094

#	Time	Username	Problem	Language	Result	Execution time	Memory
792094		Boomyday	Exhibition (JOI19_ho_t2)	C++17	100 / 100	47 ms	6620 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;
using db = double;
using str = string;

using ii = pair<int,int>;
using pl = pair<ll,ll>;
using pd = pair<db,db>;

using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vd = vector<db>;
using vs = vector<str>;
using vii = vector<ii>;
using vpl = vector<pl>;
using vpd = vector<pd>;

#define tcT template<class T
#define tcTU tcT, class U

tcT> using V = vector<T>;
tcT, size_t SZ> using AR = array<T,SZ>;
tcT> using PR = pair<T,T>;

// pairs
#define mp make_pair
#define f first
#define s second

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (a)-1; i >= (b); --i)
#define R0F(i,a) ROF(i,a,0)
#define trav(a,x) for (auto& a: x)

#define len(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
#define pb push_back
#define eb emplace_back
#define pf push_front

const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5;
const ll INF = 1e18; // not too close to LLONG_MAX
const ld PI = acos((ld)-1);
const int dx[4] = {1,0,-1,0}, dy[4] = {0,1,0,-1}; // for every grid problem!!


vector<pair<ll, ll>> pics;
vector<ll> frames;


int main(){
    std::ios::sync_with_stdio(false); cin.tie(NULL);
    ll N, M; cin >> N >> M;

    F0R(_, N){
        ll s, v; cin >> s >> v; pics.pb({s,v});
    }
    F0R(_, M){
        ll c; cin >> c; frames.pb(c);
    }
    sort(all(frames), [](ll& n1, ll& n2)->bool{return n1 > n2;}); // bigger is better
    sort(all(pics), [](pair<ll,ll>&p1, pair<ll,ll>&p2)->bool{
        if (p1.s == p2.s) { return p1.f > p2.f;} return p1.s > p2.s;
    });


    //trav(i, pics) cout << i.f << " " << i.s << " ";
    //cout << endl;








    ll cur_frame = 0;



    trav(pic, pics){
        if (pic.f <= frames[cur_frame]){
            cur_frame++;
        }

    }
    cout << min(N,min(cur_frame,M)) << endl;


}

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50