Submission #1166527

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166527		tsengang	Bikeparking (EGOI24_bikeparking)	C++20	100 / 100	82 ms	9144 KiB

Main

#include <bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define pb push_back
#define ertunt return
#define vodka void
#define sleepearly ertunt
using namespace std;
int main() {
    ll n;
    cin >> n;
    vector<ll> a(n);
    for (ll i = 0; i < n; i++) cin >> a[i];
    vector<ll> b(n);
    for(ll i = 0; i < n; i++){
        cin >> b[i];
    }
    ll ans = 0; 
    vector<ll>s;
    for(ll i = 0; i < n; i++){
        while(!s.empty()){
            auto it = s.end();
            it--;
            ll j = *it;
            ll x = min(a[j],b[i]);
            ans+=x;
            a[j]-=x;
            b[i]-=x;
            if(a[j] == 0)s.pop_back();
            else break;
        }
        s.pb(i);
    }
    for(ll i = 0; i < n;i++){
        ans-=max(0ll,b[i] - a[i]);
    }
    cout << ans;
}

• Subtask 1: 16 / 16
• Subtask 2: 9 / 9
• Subtask 3: 19 / 19
• Subtask 4: 24 / 24
• Subtask 5: 32 / 32