oj.uz

답안 #553789

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
553789 2022-04-27T04:50:17 Z QwertyPi Pinball (JOI14_pinball) C++14
100 / 100
 819 ms 73088 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
const int M = 3e5+3;
int m, n;
const ll inf = 1LL << 60;
ll dp1[M], dp2[M], a[M], b[M], c[M], d[M];

struct SegTree{
	ll t[M * 4], tag[M * 4];
	void pushdown(int u, int v){
		if(tag[u] != -1){
			t[v] = tag[v] = tag[u];
		}
	}
	void push(int v){
		if(tag[v] != -1){
			pushdown(v, v * 2);
			pushdown(v, v * 2 + 1);
		}
		tag[v] = -1;
	}
	void build(ll* val, int v = 1, int tl = 0, int tr = n - 1){
		if(tl == tr){
			t[v] = val[tl]; tag[v] = -1;
			return;
		}
		int tm = (tl + tr) / 2;
		build(val, v * 2, tl, tm);
		build(val, v * 2 + 1, tm + 1, tr);
		t[v] = min(t[v * 2], t[v * 2 + 1]);
		tag[v] = -1;
	}
	
	ll qry_min(int l, int r, int v = 1, int tl = 0, int tr = n - 1){
		if(l > r) return inf;
		if(l <= tl && tr <= r) return t[v];
		push(v);
		int tm = (tl + tr) / 2;
		return min(qry_min(l, min(tm, r), v * 2, tl, tm), 
				   qry_min(max(tm + 1, l), r, v * 2 + 1, tm + 1, tr));
	}
	void upd(int l, int r, ll val, int v = 1, int tl = 0, int tr = n - 1){
		if(l > r) return;
		if(l <= tl && tr <= r){
			t[v] = tag[v] = val;
			return;
		}
		push(v);
		int tm = (tl + tr) / 2;
		upd(l, min(tm, r), val, v * 2, tl, tm);
		upd(max(tm + 1, l), r, val, v * 2 + 1, tm + 1, tr);
		t[v] = min(t[v * 2], t[v * 2 + 1]);
	}
} seg1, seg2;

int main(){
	cin >> m >> n;
	for(int i = 0; i < m; i++){
		cin >> a[i] >> b[i] >> c[i] >> d[i];
	}
	{
		set<int> S; for(int i = 0; i < m; i++) S.insert(a[i]), S.insert(b[i]), S.insert(c[i]);
		map<int, int> M; int idx = 0; for(auto i : S) M[i] = idx++; 
		if(*prev(S.end()) != n || *S.begin() != 1){
			cout << -1 << endl;
			return 0;
		}
		n = idx;
		for(int i = 0; i < m; i++) a[i] = M[a[i]], b[i] = M[b[i]], c[i] = M[c[i]];
	}
//	cout << n << endl;
//	for(int i = 0; i < m; i++){
//		cout << a[i] << ' ' << b[i] << ' ' << c[i] << endl;
//	}
	fill(dp1 + 1, dp1 + n, inf);
	fill(dp2, dp2 + n - 1, inf);
	seg1.build(dp1);
	seg2.build(dp2);
	ll ans = inf;
	for(int i = 0; i < m; i++){
		ans = min(ans, seg1.qry_min(a[i], n - 1) + seg2.qry_min(0, b[i]) + d[i]);
		{
			ll mn = seg1.qry_min(a[i], c[i]);
			seg1.upd(c[i], c[i], min(seg1.qry_min(c[i], c[i]), mn + d[i]));
		}
		{
			ll mn = seg2.qry_min(c[i], b[i]);
			seg2.upd(c[i], c[i], min(seg2.qry_min(c[i], c[i]), mn + d[i]));
		}
//		for(int i = 0; i < n; i++){
//			cout << seg1.qry_min(i, i) << ' ';
//		}
//		cout << endl;
//		for(int i = 0; i < n; i++){
//			cout << seg2.qry_min(i, i) << ' ';
//		}
//		cout << endl;
	}
	cout << (ans == inf ? -1 : ans) << endl;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 440 KB Output is correct
14 Correct 1 ms 468 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 440 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 4 ms 704 KB Output is correct
18 Correct 3 ms 340 KB Output is correct
19 Correct 3 ms 580 KB Output is correct
20 Correct 4 ms 596 KB Output is correct
21 Correct 3 ms 596 KB Output is correct
22 Correct 4 ms 1028 KB Output is correct
23 Correct 4 ms 980 KB Output is correct
24 Correct 5 ms 980 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 440 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 4 ms 704 KB Output is correct
18 Correct 3 ms 340 KB Output is correct
19 Correct 3 ms 580 KB Output is correct
20 Correct 4 ms 596 KB Output is correct
21 Correct 3 ms 596 KB Output is correct
22 Correct 4 ms 1028 KB Output is correct
23 Correct 4 ms 980 KB Output is correct
24 Correct 5 ms 980 KB Output is correct
25 Correct 44 ms 4792 KB Output is correct
26 Correct 133 ms 12240 KB Output is correct
27 Correct 417 ms 24504 KB Output is correct
28 Correct 292 ms 7560 KB Output is correct
29 Correct 268 ms 21948 KB Output is correct
30 Correct 385 ms 11444 KB Output is correct
31 Correct 616 ms 42244 KB Output is correct
32 Correct 546 ms 28828 KB Output is correct
33 Correct 86 ms 12100 KB Output is correct
34 Correct 308 ms 36732 KB Output is correct
35 Correct 491 ms 72928 KB Output is correct
36 Correct 819 ms 73088 KB Output is correct
37 Correct 690 ms 73024 KB Output is correct
38 Correct 653 ms 73036 KB Output is correct