Submission #228428

#	Time	Username	Problem	Language	Result	Execution time	Memory
228428		s_avila_g	Garage (IOI09_garage)	C++14	0 / 100	320 ms	444 KiB

garage

#include <bits/stdc++.h>
using namespace std;
queue<int> col;
map<int,int> mp;

int main(){
    freopen("in.txt","r",stdin);
    freopen("out.txt","w",stdout);
    int n,m;
    cin>>n>>m;
    vector<int> parks(n);
    vector<int> cars(n);
    for(int i = 0 ; i < n; i++)cin>>parks[i];
    for(int i = 0 ; i < m; i++)cin>>cars[i];
    int vis[n];
    memset(vis,0,sizeof vis);
    int ans = 0;
    for(int i = 0 ; i < (2*m); i++){
        int x;
        cin>>x;
        bool libre = false;
        if(x > 0){
            int pos;
            for(int j = 0; j < n; j++){
                if(vis[j] == 0){
                    libre = true;
                    pos = j;
                    break;
                }
            }
            if(!libre){
                col.push(x);
            }else{
                mp[x] = pos;
                ans += cars[x-1] * parks[pos];
                vis[pos] = 1;
            }
        }else{
            vis[mp[abs(x)]] = 0;
            if(!col.empty()){
                int nxt = col.front();
                vis[mp[abs(x)]] = 1;
                col.pop();
                ans += cars[nxt-1] * parks[mp[abs(x)]];
            }
            mp[abs(x)] = -1;
        }
    }
    cout<<ans<<endl;
}

Compilation message (stderr)

garage.cpp: In function 'int main()':
garage.cpp:7:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("in.txt","r",stdin);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~
garage.cpp:8:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen("out.txt","w",stdout);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100