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답안 #416205

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
416205 2021-06-02T07:26:29 Z alishahali1382 Group Photo (JOI21_ho_t3) C++14
100 / 100
 370 ms 67388 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("O2,unroll-loops")
//#pragma GCC optimize("no-stack-protector,fast-math")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<pii, int> piii;
typedef pair<ll, ll> pll;
#define debug(x) cerr<<#x<<'='<<(x)<<endl;
#define debugp(x) cerr<<#x<<"= {"<<(x.first)<<", "<<(x.second)<<"}"<<endl;
#define debug2(x, y) cerr<<"{"<<#x<<", "<<#y<<"} = {"<<(x)<<", "<<(y)<<"}"<<endl;
#define debugv(v) {cerr<<#v<<" : ";for (auto x:v) cerr<<x<<' ';cerr<<endl;}
#define all(x) x.begin(), x.end()
#define pb push_back
#define kill(x) return cout<<x<<'\n', 0;

const int inf=1000000010;
const ll INF=1000000000000001000LL;
const int mod=1000000007;
const int MAXN=5010, LOG=20;

int n, m, k, u, v, x, y, t, a, b;
int A[MAXN], B[MAXN];
int cnt[MAXN][MAXN];
int dp[MAXN];

inline int C2(int x){ return x*(x-1)/2;}

int main(){
	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	cin>>n;
	for (int i=1; i<=n; i++) cin>>A[i], B[A[i]]=i;
	for (int r=1; r<=n; r++){
		for (int l=r-1; l; l--){
			cnt[l][r]=cnt[l+1][r]+cnt[l][r-1]-cnt[l+1][r-1]+(B[l]>B[r]);
		}
	}
	for (int i=1; i<=n; i++){
		dp[i]=C2(i)-cnt[1][i] + cnt[1][n]-cnt[1][i]-cnt[i+1][n];
		for (int j=1; j<i; j++){
			int cost1=C2(i-j)-cnt[j+1][i];  // (j, i]
			int cost2=cnt[j+1][n]-cnt[j+1][i]-cnt[i+1][n];
			dp[i]=min(dp[i], dp[j] + cost1 + cost2);
		}
	}
	cout<<dp[n]<<"\n";
	
	return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #3
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 2 ms 1100 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 1 ms 1228 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 1 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1100 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 2 ms 1100 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 1 ms 1228 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 1 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1100 KB Output is correct
31 Correct 5 ms 4684 KB Output is correct
32 Correct 5 ms 4804 KB Output is correct
33 Correct 5 ms 4684 KB Output is correct
34 Correct 6 ms 4812 KB Output is correct
35 Correct 5 ms 4708 KB Output is correct
36 Correct 6 ms 4812 KB Output is correct
37 Correct 5 ms 4812 KB Output is correct
38 Correct 6 ms 4812 KB Output is correct
39 Correct 6 ms 4812 KB Output is correct
40 Correct 6 ms 4812 KB Output is correct

Subtask #5
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 1100 KB Output is correct
23 Correct 2 ms 1100 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 1 ms 1228 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 1 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1100 KB Output is correct
31 Correct 5 ms 4684 KB Output is correct
32 Correct 5 ms 4804 KB Output is correct
33 Correct 5 ms 4684 KB Output is correct
34 Correct 6 ms 4812 KB Output is correct
35 Correct 5 ms 4708 KB Output is correct
36 Correct 6 ms 4812 KB Output is correct
37 Correct 5 ms 4812 KB Output is correct
38 Correct 6 ms 4812 KB Output is correct
39 Correct 6 ms 4812 KB Output is correct
40 Correct 6 ms 4812 KB Output is correct
41 Correct 341 ms 67288 KB Output is correct
42 Correct 333 ms 67324 KB Output is correct
43 Correct 323 ms 67336 KB Output is correct
44 Correct 349 ms 67328 KB Output is correct
45 Correct 354 ms 67236 KB Output is correct
46 Correct 360 ms 67380 KB Output is correct
47 Correct 365 ms 67364 KB Output is correct
48 Correct 360 ms 67372 KB Output is correct
49 Correct 358 ms 67364 KB Output is correct
50 Correct 370 ms 67368 KB Output is correct
51 Correct 348 ms 67372 KB Output is correct
52 Correct 351 ms 67332 KB Output is correct
53 Correct 362 ms 67376 KB Output is correct
54 Correct 359 ms 67364 KB Output is correct
55 Correct 358 ms 67388 KB Output is correct