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답안 #286391

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
286391 2020-08-30T11:02:40 Z TadijaSebez 별자리 3 (JOI20_constellation3) C++11
100 / 100
 834 ms 62260 KB 
#include <bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define ll long long
#define pb push_back
const int N=200050;
const int L=20;
int a[N],lgs[N],n;
pii rmq[N][L];
pii Get(int l,int r){
	int k=lgs[r-l+1];
	return max(rmq[l][k],rmq[r-(1<<k)+1][k]);
}
pii GetRng(int x,int y){
	int top=x,bot=1,mid,L=0,R=n+1;
	while(top>=bot){
		mid=top+bot>>1;
		if(Get(mid,x).first>=y)L=mid,bot=mid+1;
		else top=mid-1;
	}
	top=n,bot=x;
	while(top>=bot){
		mid=top+bot>>1;
		if(Get(x,mid).first>=y)R=mid,top=mid-1;
		else bot=mid+1;
	}
	return {L,R};
}
int x[N],y[N],c[N],ord[N];
vector<int> stars[N];
int ls[N],rs[N];
int Build(int l,int r){
	if(r-l<2)return 0;
	pii m=Get(l+1,r-1);
	ls[m.second]=Build(l,m.second);
	rs[m.second]=Build(m.second,r);
	return m.second;
}
ll dp[N],sum[N];
int lid[N],rid[N],tid;
ll bit[N];
void Add(int i,ll x){for(;i<=n;i+=i&-i)bit[i]+=x;}
void Add(int l,int r,ll x){Add(l,x);Add(r+1,-x);}
ll Get(int i){ll ans=0;for(;i>=1;i-=i&-i)ans+=bit[i];return ans;}
void Solve(int u){
	if(!u)return;
	lid[u]=++tid;
	Solve(ls[u]);
	Solve(rs[u]);
	rid[u]=tid;
	sum[u]=dp[u]=dp[ls[u]]+dp[rs[u]];
	for(int i:stars[u]){
		dp[u]=max(dp[u],sum[u]+Get(lid[x[i]])+c[i]);
	}
	Add(lid[u],rid[u],sum[u]-dp[u]);
}
int main(){
	scanf("%i",&n);
	for(int i=1;i<=n;i++)scanf("%i",&a[i]),rmq[i][0]={a[i],i};
	a[0]=a[n+1]=n;
	for(int j=1;j<L;j++){
		for(int i=1;i<=n-(1<<j)+1;i++){
			rmq[i][j]=max(rmq[i][j-1],rmq[i+(1<<j-1)][j-1]);
		}
	}
	for(int i=2;i<=n;i++)lgs[i]=lgs[i>>1]+1;
	ll sum=0;
	int m;
	scanf("%i",&m);
	for(int i=1;i<=m;i++){
		scanf("%i %i %i",&x[i],&y[i],&c[i]);
		pii rng=GetRng(x[i],y[i]);
		stars[Get(rng.first+1,rng.second-1).second].pb(i);
		sum+=c[i];
	}
	int root=Build(0,n+1);
	Solve(root);
	printf("%lld\n",sum-dp[root]);
	return 0;
}

Compilation message

constellation3.cpp: In function 'std::pair<int, int> GetRng(int, int)':
constellation3.cpp:17:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   17 |   mid=top+bot>>1;
      |       ~~~^~~~
constellation3.cpp:23:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   23 |   mid=top+bot>>1;
      |       ~~~^~~~
constellation3.cpp: In function 'int main()':
constellation3.cpp:63:41: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   63 |    rmq[i][j]=max(rmq[i][j-1],rmq[i+(1<<j-1)][j-1]);
      |                                        ~^~
constellation3.cpp:58:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   58 |  scanf("%i",&n);
      |  ~~~~~^~~~~~~~~
constellation3.cpp:59:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   59 |  for(int i=1;i<=n;i++)scanf("%i",&a[i]),rmq[i][0]={a[i],i};
      |                       ~~~~~^~~~~~~~~~~~
constellation3.cpp:69:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   69 |  scanf("%i",&m);
      |  ~~~~~^~~~~~~~~
constellation3.cpp:71:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   71 |   scanf("%i %i %i",&x[i],&y[i],&c[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 5 ms 5120 KB Output is correct
3 Correct 5 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5120 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 5 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 6 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5120 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 4 ms 5120 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 5 ms 5120 KB Output is correct
3 Correct 5 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5120 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 5 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 6 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5120 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 4 ms 5120 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 6 ms 5504 KB Output is correct
24 Correct 7 ms 5504 KB Output is correct
25 Correct 8 ms 5504 KB Output is correct
26 Correct 7 ms 5632 KB Output is correct
27 Correct 6 ms 5504 KB Output is correct
28 Correct 6 ms 5632 KB Output is correct
29 Correct 6 ms 5632 KB Output is correct
30 Correct 6 ms 5632 KB Output is correct
31 Correct 8 ms 5632 KB Output is correct
32 Correct 6 ms 5632 KB Output is correct
33 Correct 8 ms 5632 KB Output is correct
34 Correct 7 ms 5632 KB Output is correct
35 Correct 6 ms 5632 KB Output is correct
36 Correct 7 ms 5632 KB Output is correct
37 Correct 6 ms 5632 KB Output is correct
38 Correct 7 ms 5632 KB Output is correct
39 Correct 8 ms 5504 KB Output is correct
40 Correct 8 ms 5616 KB Output is correct
41 Correct 6 ms 5504 KB Output is correct
42 Correct 7 ms 5632 KB Output is correct
43 Correct 6 ms 5632 KB Output is correct
44 Correct 6 ms 5536 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 5 ms 5120 KB Output is correct
3 Correct 5 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5120 KB Output is correct
7 Correct 4 ms 5120 KB Output is correct
8 Correct 5 ms 5120 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 5120 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 6 ms 5120 KB Output is correct
13 Correct 4 ms 5120 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 5 ms 5120 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5120 KB Output is correct
18 Correct 4 ms 5120 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 5120 KB Output is correct
21 Correct 4 ms 5120 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 6 ms 5504 KB Output is correct
24 Correct 7 ms 5504 KB Output is correct
25 Correct 8 ms 5504 KB Output is correct
26 Correct 7 ms 5632 KB Output is correct
27 Correct 6 ms 5504 KB Output is correct
28 Correct 6 ms 5632 KB Output is correct
29 Correct 6 ms 5632 KB Output is correct
30 Correct 6 ms 5632 KB Output is correct
31 Correct 8 ms 5632 KB Output is correct
32 Correct 6 ms 5632 KB Output is correct
33 Correct 8 ms 5632 KB Output is correct
34 Correct 7 ms 5632 KB Output is correct
35 Correct 6 ms 5632 KB Output is correct
36 Correct 7 ms 5632 KB Output is correct
37 Correct 6 ms 5632 KB Output is correct
38 Correct 7 ms 5632 KB Output is correct
39 Correct 8 ms 5504 KB Output is correct
40 Correct 8 ms 5616 KB Output is correct
41 Correct 6 ms 5504 KB Output is correct
42 Correct 7 ms 5632 KB Output is correct
43 Correct 6 ms 5632 KB Output is correct
44 Correct 6 ms 5536 KB Output is correct
45 Correct 563 ms 53752 KB Output is correct
46 Correct 558 ms 53368 KB Output is correct
47 Correct 580 ms 52604 KB Output is correct
48 Correct 565 ms 53880 KB Output is correct
49 Correct 558 ms 52216 KB Output is correct
50 Correct 552 ms 52344 KB Output is correct
51 Correct 577 ms 52572 KB Output is correct
52 Correct 592 ms 53368 KB Output is correct
53 Correct 564 ms 53368 KB Output is correct
54 Correct 767 ms 57720 KB Output is correct
55 Correct 759 ms 57976 KB Output is correct
56 Correct 739 ms 56568 KB Output is correct
57 Correct 758 ms 55800 KB Output is correct
58 Correct 687 ms 56056 KB Output is correct
59 Correct 699 ms 55800 KB Output is correct
60 Correct 231 ms 62260 KB Output is correct
61 Correct 624 ms 55040 KB Output is correct
62 Correct 834 ms 59256 KB Output is correct
63 Correct 666 ms 54172 KB Output is correct
64 Correct 622 ms 53268 KB Output is correct
65 Correct 727 ms 59712 KB Output is correct
66 Correct 635 ms 53644 KB Output is correct