#include <bits/stdc++.h>
#pragma GCC optimize("O3", "unroll-loops")
#define ll long long
#define int long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
#define ld long double
using namespace std;
typedef pair<int,int> pii;
typedef pair<pii, int> ipii;
const int MAXN = 1e5+10;
const int MAXA = 110;
const int INF = 1e18+10;
const int LOG = 19;
const int MOD = 1e9+7;
const int SQRT = 450;
const vector<int> NOL = {};
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const vector<int> dx = {1, -1, 0, 0};
const vector<int> dy = {0, 0, 1, -1};
void chmx(int &a, int b){ a = max(a, b); }
int n, m;
int x[MAXN], w[MAXN];
int pl[MAXN];
signed main(){
// ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n >> m;
for(int i=1; i<=n; i++) cin >> x[i];
for(int i=1; i<=m; i++) cin >> w[i];
int ANS = 0;
set <int> s; for(int i=1; i<=n; i++) s.insert(i);
for(int i=1; i<=2*m; i++){
int x; cin >> x;
if(x>0){
int idx = *(s.begin()); s.erase(idx); pl[x] = idx;
ANS += w[x] * x[idx];
} else {
s.insert(pl[x]);
}
}
cout << ANS << '\n';
}
Compilation message
garage.cpp: In function 'int main()':
garage.cpp:42:28: error: invalid types 'long long int[long long int]' for array subscript
42 | ANS += w[x] * x[idx];
| ^
