Submission #538431

#	Time	Username	Problem	Language	Result	Execution time	Memory
538431		__Variatto	Exhibition (JOI19_ho_t2)	C++17	100 / 100	57 ms	4456 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define ll long long
const int MAX=1e5+10;
int n, m, roz[MAX];
pair<int,int>a[MAX];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cin>>n>>m;
    for(int i=1; i<=n; i++)
        cin>>a[i].fi>>a[i].se;
    sort(a+1, a+n+1, [](pair<int,int>x, pair<int,int>y){
        if(x.se==y.se) return x.fi<y.fi;
        return x.se<y.se;
    });
    for(int i=1; i<=m; i++)
        cin>>roz[i];
    sort(roz+1, roz+m+1);
    int ile=0, licz=n;
    for(int i=m; i>=1; i--){
        while(licz>=1 && a[licz].fi>roz[i])
            licz--;
        if(licz>=1 && a[licz].fi<=roz[i])
            ile++;
        licz--;
    }
    cout<<ile<<"\n";
}

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