Submission #211863

#	Time	Username	Problem	Language	Result	Execution time	Memory
211863		mode149256	Garage (IOI09_garage)	C++14	100 / 100	18 ms	384 KiB

garage

/*input

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

typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<ld, ld> pd;

typedef vector<int> vi;
typedef vector<vi> vii;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<vl> vll;
typedef vector<pi> vpi;
typedef vector<vpi> vpii;
typedef vector<pl> vpl;
typedef vector<cd> vcd;
typedef vector<pd> vpd;
typedef vector<bool> vb;
typedef vector<vb> vbb;
typedef std::string str;
typedef std::vector<str> vs;

#define x first
#define y second
#define debug(...) cout<<"["<<#__VA_ARGS__<<": "<<__VA_ARGS__<<"]\n"

const int MOD = 1000000007;
const ll INF = std::numeric_limits<ll>::max();
const int MX = 100101;
const ld PI = 3.14159265358979323846264338327950288419716939937510582097494L;

template<typename T>
pair<T, T> operator+(const pair<T, T> &a, const pair<T, T> &b) { return pair<T, T>(a.x + b.x, a.y + b.y); }
template<typename T>
pair<T, T> operator-(const pair<T, T> &a, const pair<T, T> &b) { return pair<T, T>(a.x - b.x, a.y - b.y); }
template<typename T>
T operator*(const pair<T, T> &a, const pair<T, T> &b) { return (a.x * b.x + a.y * b.y); }
template<typename T>
T operator^(const pair<T, T> &a, const pair<T, T> &b) { return (a.x * b.y - a.y * b.x); }

template<typename T>
void print(vector<T> vec, string name = "") {
	cout << name;
	for (auto u : vec)
		cout << u << ' ';
	cout << '\n';
}

int main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int N, M;
	cin >> N >> M;
	vi R(N), W(M + 1);
	for (int i = 0; i < N; ++i)
		cin >> R[i];
	for (int i = 1; i <= M; ++i)
		cin >> W[i];

	set<int> laisvi;
	for (int i = 0; i < N; ++i)
		laisvi.insert(i);

	queue<int> eile;

	vi stovi(M + 1, -1);
	ll ats = 0;
	for (int i = 0; i < 2 * M; ++i)
	{
		int a;
		cin >> a;
		if (a > 0) {
			// printf("a = %d, sz = %d\n", a, (int)laisvi.size());
			if (laisvi.empty()) eile.push(a);
			else {
				ats += R[*laisvi.begin()] * W[a];
				stovi[a] = *laisvi.begin();
				laisvi.erase(laisvi.begin());
			}
		} else {
			assert(stovi[-a] != -1);
			laisvi.insert(stovi[-a]);
			while (laisvi.size() and eile.size()) {
				int c = eile.front(); eile.pop();

				ats += R[*laisvi.begin()] * W[c];
				stovi[c] = *laisvi.begin();
				laisvi.erase(laisvi.begin());
			}
		}
	}

	printf("%lld\n", ats);
}

/* Look for:
* special cases (n=1?)
* overflow (ll vs int?)
* the exact constraints (multiple sets are too slow for n=10^6 :( )
* array bounds
*/

• Subtask 1: 100 / 100