Submission #369516

#	Time	Username	Problem	Language	Result	Execution time	Memory
369516		kostia244	Pinball (JOI14_pinball)	C++17	0 / 100	1 ms	620 KiB

pinball

#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2")
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 605;
int n, m;
ll can[maxn][maxn], nw[maxn][maxn];
int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> m;
	const ll inf = 1ll<<56;
	vector<array<int, 4>> f(n);
	vector<int> comp;
	for(auto &[c, l, r, d] : f) cin >> l >> r >> c >> d, comp.push_back(l), comp.push_back(r), comp.push_back(c);
	sort(comp.begin(), comp.end());
	comp.erase(unique(comp.begin(), comp.end()), comp.end());
	for(auto &[c, l, r, d] : f) l = lower_bound(comp.begin(), comp.end(), l) - comp.begin()+1;
	for(auto &[c, l, r, d] : f) r = lower_bound(comp.begin(), comp.end(), r) - comp.begin()+1;
	for(auto &[c, l, r, d] : f) c = lower_bound(comp.begin(), comp.end(), c) - comp.begin()+1;
	m = comp.size();
	for(int i = 1; i <= m; i++) for(int j = 1; j <= m; j++) can[i][j] = inf;
	for(int i = 1; i <= m; i++) can[i][i] = 0;
	reverse(f.begin(), f.end());
	for(auto [c, l, r, d] : f) {
		for(int i = 1; i <= m; i++) for(int j = 1; j <= m; j++) nw[i][j] = can[i][j];
		//cout << l << " " << r << endl;
		//cout << can[c][c] << endl;
		#define minq(a, b) a = min(a, b)
		for(int x = 1; x <= c; x++)
			for(int y = c; y <= m; y++) if(can[x][y] < inf) {
				minq(nw[min(x, l)][max(y, r)], can[x][y] + d);
			}
		for(int i = 1; i <= m; i++) for(int j = 1; j <= m; j++) {
			can[i][j] = nw[i][j];
		}
	}
	if(can[1][m] == inf) can[1][m] = -1;
	cout << can[1][m] << endl;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 18
• Subtask 3: 0 / 22
• Subtask 4: 0 / 49