답안 #372320

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
372320 2021-02-27T16:03:02 Z errorgorn Group Photo (JOI21_ho_t3) C++17
100 / 100
1031 ms 620 KB
//雪花飄飄北風嘯嘯
//天地一片蒼茫

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl

#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define lb lower_bound
#define up upper_bound

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

struct FEN{
	int fen[5005];
	
	FEN(){
		memset(fen,0,sizeof(fen));
	}
	
	void update(int i,int k){
		while (i<5005){
			fen[i]+=k;
			i+=i&-i;
		}
	}
	
	int query(int i){
		int res=0;
		while (i){
			res+=fen[i];
			i-=i&-i;
		}
		return res;
	}
	
	int query(int i,int j){
		return query(j)-query(i-1);
	}
} hi,lo;

int n;
int arr[5005];
int pos[5005];
ll dp[5005];

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	cin>>n;
	rep(x,1,n+1) cin>>arr[x];
	rep(x,1,n+1) pos[arr[x]]=x;
	
	memset(dp,63,sizeof(dp));
	
	dp[0]=0;
	rep(x,0,n){
		hi=FEN();
		lo=FEN();
		
		rep(y,x+1,n+1) hi.update(pos[y],1);
		
		ll curr=dp[x];
		rep(y,x+1,n+1){
			curr+=hi.query(1,pos[y]-1);
			curr+=lo.query(1,pos[y]-1);
			curr-=lo.query(pos[y]+1,5004);
			
			//cout<<x<<" "<<y<<" "<<curr<<endl;
			dp[y]=min(dp[y],curr);
			
			hi.update(pos[y],-1);
			lo.update(pos[y],1);
		}
	}
	
	//rep(x,0,n+1) cout<<dp[x]<<" "; cout<<endl;
	cout<<dp[n]<<endl;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 396 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 396 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 396 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
21 Correct 3 ms 492 KB Output is correct
22 Correct 3 ms 492 KB Output is correct
23 Correct 3 ms 492 KB Output is correct
24 Correct 3 ms 492 KB Output is correct
25 Correct 3 ms 512 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 3 ms 492 KB Output is correct
30 Correct 3 ms 492 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 396 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
21 Correct 3 ms 492 KB Output is correct
22 Correct 3 ms 492 KB Output is correct
23 Correct 3 ms 492 KB Output is correct
24 Correct 3 ms 492 KB Output is correct
25 Correct 3 ms 512 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 3 ms 492 KB Output is correct
30 Correct 3 ms 492 KB Output is correct
31 Correct 27 ms 492 KB Output is correct
32 Correct 27 ms 492 KB Output is correct
33 Correct 28 ms 492 KB Output is correct
34 Correct 27 ms 492 KB Output is correct
35 Correct 29 ms 492 KB Output is correct
36 Correct 27 ms 512 KB Output is correct
37 Correct 27 ms 492 KB Output is correct
38 Correct 27 ms 508 KB Output is correct
39 Correct 28 ms 492 KB Output is correct
40 Correct 27 ms 492 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 396 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
21 Correct 3 ms 492 KB Output is correct
22 Correct 3 ms 492 KB Output is correct
23 Correct 3 ms 492 KB Output is correct
24 Correct 3 ms 492 KB Output is correct
25 Correct 3 ms 512 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 3 ms 492 KB Output is correct
30 Correct 3 ms 492 KB Output is correct
31 Correct 27 ms 492 KB Output is correct
32 Correct 27 ms 492 KB Output is correct
33 Correct 28 ms 492 KB Output is correct
34 Correct 27 ms 492 KB Output is correct
35 Correct 29 ms 492 KB Output is correct
36 Correct 27 ms 512 KB Output is correct
37 Correct 27 ms 492 KB Output is correct
38 Correct 27 ms 508 KB Output is correct
39 Correct 28 ms 492 KB Output is correct
40 Correct 27 ms 492 KB Output is correct
41 Correct 975 ms 620 KB Output is correct
42 Correct 1031 ms 620 KB Output is correct
43 Correct 973 ms 620 KB Output is correct
44 Correct 979 ms 620 KB Output is correct
45 Correct 994 ms 620 KB Output is correct
46 Correct 976 ms 536 KB Output is correct
47 Correct 1006 ms 620 KB Output is correct
48 Correct 1000 ms 620 KB Output is correct
49 Correct 1018 ms 620 KB Output is correct
50 Correct 1000 ms 536 KB Output is correct
51 Correct 990 ms 536 KB Output is correct
52 Correct 1020 ms 620 KB Output is correct
53 Correct 993 ms 492 KB Output is correct
54 Correct 1008 ms 536 KB Output is correct
55 Correct 989 ms 536 KB Output is correct