Submission #733585

#	Time	Username	Problem	Language	Result	Execution time	Memory
733585		n0sk1ll	Bubble Sort 2 (JOI18_bubblesort2)	C++17	17 / 100	9050 ms	1388 KiB

bubblesort2

#include <bits/stdc++.h>
 
#define FAST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);cerr.tie(0)
#define mp make_pair
#define xx first
#define yy second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define all(x) x.begin(),x.end()
#define ff(i,a,b) for (int i = a; i < b; i++)
#define fff(i,a,b) for (int i = a; i <= b; i++)
#define bff(i,a,b) for (int i = b-1; i >= a; i--)
#define bfff(i,a,b) for (int i = b; i >= a; i--)
 
using namespace std;
long double typedef ld;
unsigned int typedef ui;
long long int typedef li;
pair<int,int> typedef pii;
pair<li,li> typedef pli;
pair<ld,ld> typedef pld;
vector<vector<int>> typedef graph;
unsigned long long int typedef ull;
//const int mod = 998244353;
const int mod = 1000000007;
 
 
 
 
 
 
 
//Note to self: Check for overflow
 
#include "bubblesort2.h"
 
const int N=8003;
int fwt[N+3];
 
void add(int i, int x)
{
    for (;i<=N;i+=(i&-i)) fwt[i]+=x;
}
 
int pre(int i)
{
    int ret=0;
    for (;i;i-=(i&-i)) ret+=fwt[i];
    return ret;
}
 
int solve(vector<int> a, int n)
{
    vector<int> sorta=a;
    sort(all(sorta));
 
    ff(i,0,n) a[i]=lower_bound(all(sorta),a[i])-sorta.begin()+1;
 
    int ret=0;
    ff(i,0,n)
    {
        ret=max(ret,i-pre(a[i]));
        add(a[i],1);
    }
 
    fff(i,1,N) fwt[i]=0;
 
    return ret;
}
 
vector<int> countScans(vector<int> a, vector<int> X, vector<int> V)
{
    int n=(int)a.size();
	int q=(int)X.size();
	vector<int> ans(q,0);
 
	ff(i,0,q)
	{
	    a[X[i]]=V[i];
	    ans[i]=solve(a,n);
	}
 
	return ans;
}

• Subtask 1: 17 / 17
• Subtask 2: 0 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40