oj.uz

답안 #447831

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
447831 2021-07-27T16:09:33 Z NhatMinh0208 Group Photo (JOI21_ho_t3) C++17
100 / 100
 295 ms 98348 KB 
#ifndef CPL_TEMPLATE
#define CPL_TEMPLATE
/*
	Normie's Template v2.5
	Changes:
    Added warning against using pragmas on USACO.
*/
// Standard library in one include.
#include <bits/stdc++.h>
using namespace std;
 
// ordered_set library.
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set(el) tree<el,null_type,less<el>,rb_tree_tag,tree_order_statistics_node_update>
 
// AtCoder library. (Comment out these two lines if you're not submitting in AtCoder.) (Or if you want to use it in other judges, run expander.py first.)
//#include <atcoder/all>
//using namespace atcoder;

//Pragmas (Comment out these three lines if you're submitting in szkopul or USACO.)
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast,unroll-loops,tree-vectorize")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
 
//File I/O.
#define FILE_IN "cseq.inp"
#define FILE_OUT "cseq.out"
#define ofile freopen(FILE_IN,"r",stdin);freopen(FILE_OUT,"w",stdout)
 
//Fast I/O.
#define fio ios::sync_with_stdio(0);cin.tie(0)
#define nfio cin.tie(0)
#define endl "\n"
 
//Order checking.
#define ord(a,b,c) ((a>=b)and(b>=c))
 
//min/max redefines, so i dont have to resolve annoying compile errors.
#define min(a,b) (((a)<(b))?(a):(b))
#define max(a,b) (((a)>(b))?(a):(b))

// Fast min/max assigns to use with AVX.
// Requires g++ 9.2.0.
template<typename T>
__attribute__((always_inline)) void chkmin(T& a, const T& b) {
    a=(a<b)?a:b;
}

template<typename T>
__attribute__((always_inline)) void chkmax(T& a, const T& b) {
    a=(a>b)?a:b;
}
 
//Constants.
#define MOD (ll(998244353))
#define MAX 300001
#define mag 320
const long double PI=3.14159265358979;
 
//Pairs and 3-pairs.
#define p1 first
#define p2 second.first
#define p3 second.second
#define fi first
#define se second
#define pii(element_type) pair<element_type,element_type>
#define piii(element_type) pair<element_type,pii(element_type)>
 
//Quick power of 2.
#define pow2(x) (ll(1)<<x)
 
//Short for-loops.
#define ff(i,__,___) for(int i=__;i<=___;i++)
#define rr(i,__,___) for(int i=__;i>=___;i--)
 
//Typedefs.
#define bi BigInt
typedef long long ll;
typedef long double ld;
typedef short sh;

// Binpow and stuff
ll BOW(ll a, ll x, ll p)
{
	if (!x) return 1;
	ll res=BOW(a,x/2,p);
	res*=res;
	res%=p;
	if (x%2) res*=a;
	return res%p;
}
ll INV(ll a, ll p)
{
	return BOW(a,p-2,p);
}
//---------END-------//
#endif
vector<int> vec;
int n,m,i,j,k,t,t1,u,v,a,b;
ordered_set(int) lmao,lmao2;
int h[5001],hh[5001];
int dp[5001],ch[5001];
int pref[5001][5001];
int main()
{
	fio;
    cin>>n;
    dp[n]=0;
    for (i=1;i<=n;i++) {cin>>hh[i]; h[hh[i]]=i; pref[hh[i]][i]=1;}
    for (i=1;i<=n;i++) for (j=1;j<=n;j++)
    {
        pref[i][j]+=pref[i][j-1];
        pref[i][j]+=pref[i-1][j];
        pref[i][j]-=pref[i-1][j-1];
    } 
    for (i=n-1;i>=0;i--)
    {
        dp[i]=1e9;
        // for (j=i+1;j<=n;j++) lmao.insert(h[j]);
        // lmao2.clear();
        u=0;
        for (j=i+1;j<=n;j++)
        {
            u+=(pref[n][h[j]-1]-pref[j][h[j]-1]);
            // u+=lmao.order_of_key(h[j]);
            u-=(j-i-1);
            u+=2*(pref[j-1][h[j]-1]-pref[i][h[j]-1]);
            // u+=2*lmao2.order_of_key(h[j]);
            // lmao.erase(h[j]);
            // lmao2.insert(h[j]);
            if (dp[j]+u<dp[i]) ch[i]=j;
            dp[i]=min(dp[i],dp[j]+u);
            
        }
        // cout<<i<<' '<<dp[i]<<' '<<ch[i]<<endl;
    }
    cout<<dp[0];
}

// a

Compilation message

Main.cpp:23: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
   23 | #pragma comment(linker, "/stack:200000000")
      |

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 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 0 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 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 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 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 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 0 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 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 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 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1228 KB Output is correct
22 Correct 1 ms 1228 KB Output is correct
23 Correct 1 ms 1228 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 1228 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 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 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1228 KB Output is correct
22 Correct 1 ms 1228 KB Output is correct
23 Correct 1 ms 1228 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 1228 KB Output is correct
31 Correct 6 ms 6060 KB Output is correct
32 Correct 6 ms 5964 KB Output is correct
33 Correct 6 ms 5964 KB Output is correct
34 Correct 7 ms 5964 KB Output is correct
35 Correct 6 ms 5964 KB Output is correct
36 Correct 6 ms 5964 KB Output is correct
37 Correct 6 ms 5964 KB Output is correct
38 Correct 6 ms 5964 KB Output is correct
39 Correct 7 ms 5964 KB Output is correct
40 Correct 6 ms 5964 KB Output is correct

Subtask #5
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 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 336 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 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 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1228 KB Output is correct
22 Correct 1 ms 1228 KB Output is correct
23 Correct 1 ms 1228 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 1228 KB Output is correct
31 Correct 6 ms 6060 KB Output is correct
32 Correct 6 ms 5964 KB Output is correct
33 Correct 6 ms 5964 KB Output is correct
34 Correct 7 ms 5964 KB Output is correct
35 Correct 6 ms 5964 KB Output is correct
36 Correct 6 ms 5964 KB Output is correct
37 Correct 6 ms 5964 KB Output is correct
38 Correct 6 ms 5964 KB Output is correct
39 Correct 7 ms 5964 KB Output is correct
40 Correct 6 ms 5964 KB Output is correct
41 Correct 288 ms 98188 KB Output is correct
42 Correct 285 ms 98224 KB Output is correct
43 Correct 290 ms 98348 KB Output is correct
44 Correct 285 ms 98184 KB Output is correct
45 Correct 285 ms 98232 KB Output is correct
46 Correct 284 ms 98272 KB Output is correct
47 Correct 284 ms 98264 KB Output is correct
48 Correct 289 ms 98264 KB Output is correct
49 Correct 283 ms 98268 KB Output is correct
50 Correct 282 ms 98244 KB Output is correct
51 Correct 295 ms 98280 KB Output is correct
52 Correct 282 ms 98244 KB Output is correct
53 Correct 286 ms 98276 KB Output is correct
54 Correct 287 ms 98272 KB Output is correct
55 Correct 284 ms 98244 KB Output is correct