Submission #1312547

#	Time	Username	Problem	Language	Result	Execution time	Memory
1312547		brover29	Exhibition (JOI19_ho_t2)	C++17	100 / 100	43 ms	2004 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
//N8H+R!dg!ZZ5=+6
using namespace std;
using ll = int;
const ll N=1e5+29;
#define f first
#define s second
ll n,m,c[N];
ll b[N];
ll ans;
pair<ll,ll>a[N];
ll check(ll k){
    ll j=m-k+1;
    for(ll i=1;i<=n;i++){
        if(c[i]<=b[j]){
            j++;
            if(j>m)return 1;
        }
    }
    return 0;
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin>>n>>m;
    for(ll i=1;i<=n;i++){
        cin>>a[i].s>>a[i].f;
    }sort(a+1,a+1+n);
    for(ll i=1;i<=m;i++){
        cin>>b[i];
    }sort(b+1,b+1+m);
    for(ll i=1;i<=n;i++)c[i]=a[i].s;
    ll l=0,r=min(n,m);
    while(l<r){
        ll mid=(r+l+1)>>1;
        if(check(mid))l=mid;
        else r=mid-1;
    }
    cout<<l;
}

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