Submission #986728

#	Time	Username	Problem	Language	Result	Execution time	Memory
986728		lyu	Garage (IOI09_garage)	C++17	100 / 100	2 ms	500 KiB

garage

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

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    int parking[n];

    for(int i = 0; i < n; i++) cin >> parking[i];
    int weight[m];
    for(int i = 0; i < m; i++) cin >> weight[i];

    int status, profit = 0;
    unordered_map<int, int> cars;
    unordered_map<int, int> taken;
    queue<int> waiting;
    for(int i = 0; i < 2*m; i++) {
        cin >> status;
        if(status > 0) {
            status--;
            bool parked = false;
            for(int i = 0; i < n; i++) {
                if(taken.count(i) == 0) {
                    taken[i] = status;
                    cars[status] = i;
                    profit += parking[i] * weight[status];
                    parked = true;
                    break;
                }
            }
            if(!parked) waiting.push(status);
        }
        else {
            status++;
            status *= -1;
            int num = cars[status];
            cars.erase(status);
            taken.erase(num);
            if(!waiting.empty()) {
                int f = waiting.front();
                cars[f] = num;
                taken[num] = f;
                profit += weight[f] * parking[num];
                waiting.pop();
            }
        }
    }
    cout << profit << '\n';
}

• Subtask 1: 100 / 100