Submission #955512

#	Time	Username	Problem	Language	Result	Execution time	Memory
955512		steveonalex	Exhibition (JOI19_ho_t2)	C++17	100 / 100	44 ms	4904 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T& container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }



int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n, m; cin >> n >> m;
    vector<pair<int, int>> a(n);
    for(int i= 0; i<n; ++i) cin >> a[i].first >> a[i].second;

    sort(ALL(a), [](pair<int, int> a, pair<int, int> b){
        if (a.second != b.second) return a.second < b.second;
        return a.first < b.first;
    });

    vector<int> C(m);
    for(int i= 0; i<m; ++i) cin >> C[i];

    sort(ALL(C), greater<int>());

    int j = 0;
    for(int i = n-1; i>=0; --i){
        if (j == m) continue;
        if (C[j] >= a[i].first) j++;
    }
    cout << j << "\n";
 
    return 0;
}

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