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답안 #277691

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
277691 2020-08-21T06:51:18 Z tmwilliamlin168 별자리 3 (JOI20_constellation3) C++14
100 / 100
 401 ms 45816 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ar array
 
const int mxN=2e5;
int n, m, a[mxN];
ar<int, 3> b[mxN];
ll s, dp2[mxN];
 
struct ds1 {
	ar<int, 2> st[2*mxN];
	void init() {
		for(int i=0; i<n; ++i)
			st[i+n]={a[i], i};
		for(int i=n-1; i; --i)
			st[i]=max(st[2*i], st[2*i+1]);
	}
	ar<int, 2> qry(int l, int r) {
		ar<int, 2> b{};
		for(l+=n, r+=n+1; l<r; ++l/=2, r/=2) {
			if(l&1)
				b=max(st[l], b);
			if(r&1)
				b=max(st[r-1], b);
		}
		return b;
	}
} ds1;
 
struct ds2 {
	ar<int, 3> st[2*mxN];
	void init() {
		for(int i=0; i<m; ++i)
			st[i+m]={b[i][1], b[i][0], b[i][2]};
		for(int i=m-1; i; --i)
			st[i]=min(st[2*i], st[2*i+1]);
	}
	ar<int, 3> qry(int l, int r) {
		ar<int, 3> b{n+1};
		for(l+=m, r+=m+1; l<r; ++l/=2, r/=2) {
			if(l&1)
				b=min(st[l], b);
			if(r&1)
				b=min(st[r-1], b);
		}
		return b;
	}
	void upd(int i, ar<int, 3> x) {
		for(st[i+=m]=x; i/=2; )
			st[i]=min(st[2*i], st[2*i+1]);
	}
} ds2;
 
struct ds3 {
	ll ft[mxN+1];
	void upd(int i, ll x) {
		for(++i; i<=n; i+=i&-i)
			ft[i]+=x;
	}
	void upd(int l, int r, ll x) {
		upd(l, x);
		upd(r+1, -x);
	}
	ll qry(int i) {
		ll r=0;
		for(++i; i; i-=i&-i)
			r+=ft[i];
		return r;
	}
} ds3;
 
int dfs(int l, int r, int mx) {
	if(l>r)
		return -1;
	int m2=ds1.qry(l, r)[1];
	int lc=dfs(l, m2-1, a[m2]), rc=dfs(m2+1, r, a[m2]);
	dp2[m2]=(~lc?dp2[lc]:0)+(~rc?dp2[rc]:0);
	int l2=lower_bound(b, b+m, ar<int, 3>{l})-b, r2=lower_bound(b, b+m, ar<int, 3>{r+1})-b-1;
	while(1) {
		ar<int, 3> d=ds2.qry(l2, r2);
		if(d[0]>mx)
			break;
		if(d[1]<m2) {
			dp2[m2]=max(d[2]+(~lc?ds3.qry(d[1]):0)+(~rc?dp2[rc]:0), dp2[m2]);
		} else if(d[1]>m2) {
			dp2[m2]=max(d[2]+(~lc?dp2[lc]:0)+(~rc?ds3.qry(d[1]):0), dp2[m2]);
		} else {
			dp2[m2]=max(d[2]+(~lc?dp2[lc]:0)+(~rc?dp2[rc]:0), dp2[m2]);
		}
		ds2.upd(lower_bound(b, b+m, ar<int, 3>{d[1], d[0], d[2]})-b, {n+1});
	}
	ds3.upd(l, m2, ~rc?dp2[rc]:0);
	ds3.upd(m2, r, ~lc?dp2[lc]:0);
	return m2;
}
 
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n;
	for(int i=0; i<n; ++i)
		cin >> a[i];
	ds1.init();
	cin >> m;
	for(int i=0; i<m; ++i) {
		cin >> b[i][0] >> b[i][1] >> b[i][2], --b[i][0];
		s+=b[i][2];
	}
	sort(b, b+m);
	ds2.init();
	int rt=dfs(0, n-1, n);
	cout << s-dp2[rt];
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 416 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 416 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 3 ms 512 KB Output is correct
25 Correct 4 ms 512 KB Output is correct
26 Correct 4 ms 512 KB Output is correct
27 Correct 3 ms 512 KB Output is correct
28 Correct 3 ms 512 KB Output is correct
29 Correct 3 ms 512 KB Output is correct
30 Correct 3 ms 512 KB Output is correct
31 Correct 4 ms 512 KB Output is correct
32 Correct 3 ms 768 KB Output is correct
33 Correct 4 ms 640 KB Output is correct
34 Correct 4 ms 640 KB Output is correct
35 Correct 4 ms 640 KB Output is correct
36 Correct 3 ms 768 KB Output is correct
37 Correct 4 ms 640 KB Output is correct
38 Correct 3 ms 896 KB Output is correct
39 Correct 3 ms 512 KB Output is correct
40 Correct 4 ms 768 KB Output is correct
41 Correct 3 ms 512 KB Output is correct
42 Correct 3 ms 512 KB Output is correct
43 Correct 4 ms 768 KB Output is correct
44 Correct 4 ms 512 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 416 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 3 ms 512 KB Output is correct
25 Correct 4 ms 512 KB Output is correct
26 Correct 4 ms 512 KB Output is correct
27 Correct 3 ms 512 KB Output is correct
28 Correct 3 ms 512 KB Output is correct
29 Correct 3 ms 512 KB Output is correct
30 Correct 3 ms 512 KB Output is correct
31 Correct 4 ms 512 KB Output is correct
32 Correct 3 ms 768 KB Output is correct
33 Correct 4 ms 640 KB Output is correct
34 Correct 4 ms 640 KB Output is correct
35 Correct 4 ms 640 KB Output is correct
36 Correct 3 ms 768 KB Output is correct
37 Correct 4 ms 640 KB Output is correct
38 Correct 3 ms 896 KB Output is correct
39 Correct 3 ms 512 KB Output is correct
40 Correct 4 ms 768 KB Output is correct
41 Correct 3 ms 512 KB Output is correct
42 Correct 3 ms 512 KB Output is correct
43 Correct 4 ms 768 KB Output is correct
44 Correct 4 ms 512 KB Output is correct
45 Correct 270 ms 14400 KB Output is correct
46 Correct 236 ms 14072 KB Output is correct
47 Correct 254 ms 14456 KB Output is correct
48 Correct 276 ms 14412 KB Output is correct
49 Correct 238 ms 14072 KB Output is correct
50 Correct 237 ms 13944 KB Output is correct
51 Correct 239 ms 14200 KB Output is correct
52 Correct 243 ms 14584 KB Output is correct
53 Correct 238 ms 14200 KB Output is correct
54 Correct 374 ms 35192 KB Output is correct
55 Correct 356 ms 29564 KB Output is correct
56 Correct 344 ms 26208 KB Output is correct
57 Correct 337 ms 24008 KB Output is correct
58 Correct 326 ms 28624 KB Output is correct
59 Correct 345 ms 28688 KB Output is correct
60 Correct 257 ms 45816 KB Output is correct
61 Correct 256 ms 15224 KB Output is correct
62 Correct 401 ms 38520 KB Output is correct
63 Correct 257 ms 15352 KB Output is correct
64 Correct 256 ms 14968 KB Output is correct
65 Correct 399 ms 38836 KB Output is correct
66 Correct 260 ms 15224 KB Output is correct