oj.uz

답안 #699316

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
699316 2023-02-16T14:35:34 Z jiahng Group Photo (JOI21_ho_t3) C++14
100 / 100
 376 ms 688 KB 
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
#define int ll
typedef pair<int, int> pi;
typedef vector <int> vi;
typedef vector <pi> vpi;
typedef pair <pi,pi> pipi;
typedef pair<pi, ll> pii;
typedef set <ll> si;
typedef long double ld;
#define f first
#define s second
#define mp make_pair
#define FOR(i,s,e) for(int i=s;i<=int(e);++i)
#define DEC(i,s,e) for(int i=s;i>=int(e);--i)
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define lbd(x, y) lower_bound(all(x), y)
#define ubd(x, y) upper_bound(all(x), y)
#define aFOR(i,x) for (auto i: x)
#define mem(x,i) memset(x,i,sizeof x)
#define fast ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0)
#define maxn 1000010
#define INF (ll)1e18
#define MOD 1000000007
typedef pair <vi, int> pvi;
typedef pair <int,pi> ipi;
typedef vector <pii> vpii;
#define DEBUG 0

int N,M;

int A[maxn],B[maxn];
int dp[maxn],fw[maxn];

void upd(int p,int v){
    for (int i=p;i<=N;i+=i&(-i)) fw[i] += v;
}
int qry(int p){
    int ans = 0;
    for (int i=p;i>0;i-=i&(-i)) ans += fw[i];
    return ans;
}

int idx[maxn];
int32_t main(){
    fast;
    cin >> N;
    FOR(i,1,N) cin >> A[i];
    FOR(i,1,N) B[A[i]] = i;
    FOR(x,2,N){
        dp[x] = INF;
        int sm = 0,inv=0;
        FOR(i,1,N) fw[i] = 0;
        int co = 1;
        FOR(i,1,N) if (A[i] <= x) idx[A[i]] = co++;
        DEC(k,x,1){
            inv += (x-k)-qry(B[k]);
            upd(B[k],1);

            sm += idx[k];

            //if (x == 3 && k == 1) cout << "AAA " << sm << ' ' << inv << '\n';
            dp[x] = min(dp[x], dp[k-1] + inv + x*(x+1)/2 - (k-1)*k/2 - sm);
        }
        //cout << dp[x] << ' ';
    }
    //cout << '\n';
    cout << dp[N];
}

Subtask #1
5.0 / 5.0

# 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 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# 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 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct

Subtask #3
32.0 / 32.0

# 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 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 328 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct

Subtask #4
20.0 / 20.0

# 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 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 328 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 7 ms 340 KB Output is correct
32 Correct 7 ms 324 KB Output is correct
33 Correct 7 ms 396 KB Output is correct
34 Correct 8 ms 392 KB Output is correct
35 Correct 7 ms 328 KB Output is correct
36 Correct 8 ms 340 KB Output is correct
37 Correct 7 ms 404 KB Output is correct
38 Correct 7 ms 340 KB Output is correct
39 Correct 7 ms 340 KB Output is correct
40 Correct 7 ms 392 KB Output is correct

Subtask #5
36.0 / 36.0

# 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 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 324 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 328 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 7 ms 340 KB Output is correct
32 Correct 7 ms 324 KB Output is correct
33 Correct 7 ms 396 KB Output is correct
34 Correct 8 ms 392 KB Output is correct
35 Correct 7 ms 328 KB Output is correct
36 Correct 8 ms 340 KB Output is correct
37 Correct 7 ms 404 KB Output is correct
38 Correct 7 ms 340 KB Output is correct
39 Correct 7 ms 340 KB Output is correct
40 Correct 7 ms 392 KB Output is correct
41 Correct 362 ms 660 KB Output is correct
42 Correct 376 ms 508 KB Output is correct
43 Correct 365 ms 656 KB Output is correct
44 Correct 360 ms 556 KB Output is correct
45 Correct 365 ms 680 KB Output is correct
46 Correct 356 ms 556 KB Output is correct
47 Correct 364 ms 636 KB Output is correct
48 Correct 362 ms 556 KB Output is correct
49 Correct 362 ms 636 KB Output is correct
50 Correct 358 ms 632 KB Output is correct
51 Correct 367 ms 556 KB Output is correct
52 Correct 366 ms 556 KB Output is correct
53 Correct 361 ms 688 KB Output is correct
54 Correct 371 ms 596 KB Output is correct
55 Correct 362 ms 636 KB Output is correct