Submission #1151491

#	Time	Username	Problem	Language	Result	Execution time	Memory
1151491		Ghulam_Junaid	Bikeparking (EGOI24_bikeparking)	C++20	100 / 100	137 ms	16876 KiB

Main

#include <bits/stdc++.h>
using namespace std;

const int N = 3e5 + 100;
int n, x[N], y[N];

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

    cin >> n;
    set<int> st;
    for (int i = 0; i < n; i ++)
        cin >> x[i], st.insert(i);
    for (int i = 0; i < n; i ++)
        cin >> y[i];

    int ans = 0;
    for (int i = 0; i < n; i ++){
        auto it = st.lower_bound(i);
        if (it == st.begin()) continue;
        
        it--;
        int mn = min(x[*it], y[i]);
        y[i] -= mn;
        x[*it] -= mn;
        ans += mn;

        if (x[*it] == 0){
            st.erase(it);
            i--;
        }
    }

    for (int i = n - 1; i >= 0; i --){
        auto it = st.lower_bound(i);
        if (it == st.end()) continue;

        int mn = min(x[*it], y[i]);
        y[i] -= mn;
        x[*it] -= mn;
        ans -= ((*it == i) ? 0 : mn);

        if (x[*it] == 0){
            st.erase(it);
            i++;
        }
    }

    cout << ans << endl;
}

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