제출 #387604

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
387604		bad_in_physics	Garage (IOI09_garage)	C++17	100 / 100	1 ms	332 KiB

garage

// i love pikachu

#include<bits/stdc++.h>
 
using namespace std;
 
//data types
#define ll long long int
#define str string
#define db long double

//vector
#define fi first
#define se second
#define pb push_back
#define lb lower_bound
#define up upper_bound
 
//general
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define sz(x) (ll)(x).size()
#define bg(x) (x).begin()
#define ft front()
#define dec() cout << fixed << setprecision(15)
#define dbg(x) cerr << #x << " is " << x << '\n'
#define ins insert
#define yes cout << "YES\n"
#define no cout << "NO\n"
#define atyes cout << "Yes\n"
#define atno cout << "No\n"

//structs

//permanent functions
ll ceil(ll a, ll b) {
    if (a%b==0) {
        return a/b;
    } else {
        return a/b + 1;
    }
}

void setIO(str s = "") {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    if (sz(s)) {
        freopen((s+".in").c_str(), "r", stdin);
        freopen((s+".out").c_str(), "w", stdout);
    }
}

//global permanent declarations
vector<ll> dx = {0,1,0,-1,1,1,-1,-1};
vector<ll> dy = {1,0,-1,0,1,-1,1,-1};

//global temp declarations
bool occupied[105];

//temporary functions
int first_empty_place(int s) {
    for (int i=1; i<=s; i++) {
        if (occupied[i] == 0) {
            return i;
        }
    } return -1;
}
//solution
void solve() {
    int n , m , ans = 0;
    cin >> n >> m;
    queue<int> q;
    vector<int> keeptrack(m+1,0);
    vector<int> c(n+1) , w(m+1);
    for (int i=1; i<=n; i++) {
        cin >> c[i];
    } for (int i=1; i<=m; i++) {
        cin >> w[i];
    } m *= 2;
    while (m--) {
        int a;
        cin >> a;
        if (a > 0) {
            int f = first_empty_place(n);
            if (f != -1) {
                keeptrack[a] = f;
                ans += w[a]*c[f];
                occupied[f] = 1;
            } else {
                q.push(a);
            }
        } else {
            a = abs(a);
            occupied[keeptrack[a]] = 0;
            if (!q.empty()) {
                int f = first_empty_place(n);
                int t = q.front();
                q.pop();
                if (f != -1) {
                    keeptrack[t] = f;
                    ans += w[t]*c[f];
                    occupied[f] = 1;
                }
            }
        }
    } cout << ans;
}

int main(void) {
    setIO();
    ll t = 1;
    //cin>>t;
    while (t--) {
        solve();
    } return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

garage.cpp: In function 'void setIO(std::string)':
garage.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   48 |         freopen((s+".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
garage.cpp:49:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   49 |         freopen((s+".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100