Submission #870479

#	Time	Username	Problem	Language	Result	Execution time	Memory
870479		imarn	Advertisement 2 (JOI23_ho_t2)	C++14	100 / 100	154 ms	25004 KiB

Main

#include<bits/stdc++.h>
#define ll long long
#define pii pair<ll,ll>
#define pll pair<ll,ll>
#define all(x) x.begin(),x.end()
#define pb push_back
#define sz(x) (int)x.size()
#define f first
#define s second
using namespace std;
bool cmp(pair<ll,pii> a,pair<ll,pii> b){
    if(a.f==b.f)return a.s.s-a.s.f<b.s.s-b.s.f;
    return a.f<b.f;
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    ll n;cin>>n;
    vector<pair<ll,pii>>q;
    for(int i=0;i<n;i++){
        int si,ti;cin>>si>>ti;
        q.pb({si+ti,{si,ti}});
    }sort(q.begin(),q.end(),cmp);
    stack<ll>st;
    for(int i=0;i<n;i++){
        while(!st.empty()&&st.top()<=q[i].s.s-q[i].s.f)st.pop();
        st.push(q[i].s.s-q[i].s.f);
    }cout<<st.size();
}

• Subtask 1: 10 / 10
• Subtask 2: 23 / 23
• Subtask 3: 36 / 36
• Subtask 4: 31 / 31