oj.uz

답안 #124311

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
124311 2019-07-03T02:49:17 Z arnold518 Bubble Sort 2 (JOI18_bubblesort2) C++14
38 / 100
 9000 ms 7320 KB 
#include "bubblesort2.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 5e5;
const int MAXQ = 5e5;
const ll NEGINF = -1e17;

int N, Q, S;
vector<ll> A, X, V, comp;
vector<int> ans;

ll getcomp(ll x)
{
    return lower_bound(comp.begin(), comp.end(), x)-comp.begin()+1;
}

struct SEG
{
    int N;
    vector<ll> tree, lazy;
    SEG(int N) : N(N), tree(4*N+10, NEGINF), lazy(4*N+10, 0ll) {}

    void busy(int node, int tl, int tr)
    {
        if(lazy[node]==0) return;
        tree[node]+=lazy[node];
        if(tl!=tr) lazy[node*2]+=lazy[node], lazy[node*2+1]=lazy[node];
        lazy[node]=0;
    }

    void update_change(int node, int tl, int tr, int pos, ll val)
    {
        busy(node, tl, tr);
        if(tl==tr)
        {
            tree[node]=val;
            return;
        }
        int mid=tl+tr>>1;
        if(pos<=mid) update_change(node*2, tl, mid, pos, val);
        else update_change(node*2+1, mid+1, tr, pos, val);
        tree[node]=max(tree[node*2], tree[node*2+1]);
    }

    void update_range(int node, int tl, int tr, int l, int r, ll val)
    {
        busy(node, tl, tr);
        if(tr<l || r<tl) return;
        if(l<=tl && tr<=r)
        {
            tree[node]+=val;
            if(tl!=tr) lazy[node*2]+=val, lazy[node*2+1]+=val;
            return;
        }
        int mid=tl+tr>>1;
        update_range(node*2, tl, mid, l, r, val);
        update_range(node*2+1, mid+1, tr, l, r, val);
        tree[node]=max(tree[node*2], tree[node*2+1]);
        //printf("!!!!!%d %d %d %d %d %lld : %lld %lld\n", node, tl, tr, l, r, val, tree[node], lazy[node]);
    }

    void debug(int node, int tl, int tr)
    {
        busy(node, tl, tr);
        if(tl==tr)
        {
            //printf("(%d : %lld) ", tl, tree[node]);
            return;
        }
        int mid=tl+tr>>1;
        debug(node*2, tl, mid);
        debug(node*2+1, mid+1, tr);
    }

    ll query()
    {
        busy(1, 1, N);
        return tree[1];
    }
};

struct BIT
{
    int N;
    vector<ll> tree;
    BIT(int N) : N(N), tree(N+10, 0ll) {}
    void update(int i, int val) { for(; i<=N; i+=(i&-i)) tree[i]+=val; }
    ll query(int i) { ll ret=0; for(; i>0; i-=(i&-i)) ret+=tree[i]; return ret; }
};

vector<int> countScans(vector<int> a, vector<int> x, vector<int> v)
{
    int i, j;
    N=a.size(); Q=x.size();
    for(i=0; i<a.size(); i++) A.push_back((ll)a[i]*N+i), comp.push_back((ll)a[i]*N+i);
    for(i=0; i<x.size(); i++) V.push_back((ll)v[i]*N+x[i]), comp.push_back((ll)v[i]*N+x[i]);
    for(i=0; i<v.size(); i++) X.push_back((ll)x[i]);

    sort(comp.begin(), comp.end());
    comp.erase(unique(comp.begin(), comp.end()), comp.end());
    S=comp.size();

    for(i=0; i<N; i++) A[i]=getcomp(A[i]);
    for(i=0; i<Q; i++) V[i]=getcomp(V[i]);

    SEG seg(S);
    BIT bit(S);

    for(i=0; i<N; i++) bit.update(A[i], 1);
    for(i=0; i<N; i++) seg.update_change(1, 1, S, A[i], i-bit.query(A[i]-1));

    //for(i=0; i<N; i++) printf("%lld ", A[i]); printf("\n");
    //seg.debug(1, 1, S); printf("\n");

    for(i=0; i<Q; i++)
    {
        ll pos=X[i], bef=A[pos], aft=V[i];
        bit.update(bef, -1);
        bit.update(aft, 1);

        if(bef<aft)
        {
            if(bef+1<=aft-1) seg.update_range(1, 1, S, bef+1, aft-1, 1);
            seg.update_change(1, 1, S, bef, NEGINF);
            seg.update_change(1, 1, S, aft, pos-bit.query(aft-1));
        }
        else
        {
            if(aft+1<=bef-1) seg.update_range(1, 1, S, aft+1, bef-1, -1);
            seg.update_change(1, 1, S, bef, NEGINF);
            seg.update_change(1, 1, S, aft, pos-bit.query(aft-1));
        }

        ans.push_back(seg.query());

        A[pos]=V[i];

        //printf("%lld %lld %lld\n", pos, bef, aft);
        //for(j=0; j<N; j++) printf("%lld ", A[j]); printf("\n");
        seg.debug(1, 1, S); //printf("\n");
    }
    return ans;
}

Compilation message

bubblesort2.cpp: In member function 'void SEG::update_change(int, int, int, int, ll)':
bubblesort2.cpp:44:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
bubblesort2.cpp: In member function 'void SEG::update_range(int, int, int, int, int, ll)':
bubblesort2.cpp:60:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
bubblesort2.cpp: In member function 'void SEG::debug(int, int, int)':
bubblesort2.cpp:75:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:100:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i<a.size(); i++) A.push_back((ll)a[i]*N+i), comp.push_back((ll)a[i]*N+i);
              ~^~~~~~~~~
bubblesort2.cpp:101:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i<x.size(); i++) V.push_back((ll)v[i]*N+x[i]), comp.push_back((ll)v[i]*N+x[i]);
              ~^~~~~~~~~
bubblesort2.cpp:102:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i<v.size(); i++) X.push_back((ll)x[i]);
              ~^~~~~~~~~
bubblesort2.cpp:98:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 504 KB Output is correct
2 Correct 13 ms 504 KB Output is correct
3 Correct 54 ms 764 KB Output is correct
4 Correct 55 ms 760 KB Output is correct
5 Correct 49 ms 760 KB Output is correct
6 Correct 48 ms 760 KB Output is correct
7 Correct 48 ms 760 KB Output is correct
8 Correct 48 ms 760 KB Output is correct
9 Correct 49 ms 760 KB Output is correct
10 Correct 50 ms 760 KB Output is correct
11 Correct 50 ms 888 KB Output is correct
12 Correct 49 ms 888 KB Output is correct
13 Correct 48 ms 760 KB Output is correct
14 Correct 48 ms 760 KB Output is correct
15 Correct 47 ms 760 KB Output is correct
16 Correct 47 ms 760 KB Output is correct
17 Correct 46 ms 760 KB Output is correct
18 Correct 46 ms 888 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 504 KB Output is correct
2 Correct 13 ms 504 KB Output is correct
3 Correct 54 ms 764 KB Output is correct
4 Correct 55 ms 760 KB Output is correct
5 Correct 49 ms 760 KB Output is correct
6 Correct 48 ms 760 KB Output is correct
7 Correct 48 ms 760 KB Output is correct
8 Correct 48 ms 760 KB Output is correct
9 Correct 49 ms 760 KB Output is correct
10 Correct 50 ms 760 KB Output is correct
11 Correct 50 ms 888 KB Output is correct
12 Correct 49 ms 888 KB Output is correct
13 Correct 48 ms 760 KB Output is correct
14 Correct 48 ms 760 KB Output is correct
15 Correct 47 ms 760 KB Output is correct
16 Correct 47 ms 760 KB Output is correct
17 Correct 46 ms 760 KB Output is correct
18 Correct 46 ms 888 KB Output is correct
19 Correct 612 ms 2040 KB Output is correct
20 Correct 806 ms 2292 KB Output is correct
21 Correct 709 ms 2296 KB Output is correct
22 Correct 718 ms 2300 KB Output is correct
23 Correct 728 ms 2040 KB Output is correct
24 Correct 728 ms 2168 KB Output is correct
25 Correct 710 ms 2168 KB Output is correct
26 Correct 713 ms 2044 KB Output is correct
27 Correct 692 ms 2040 KB Output is correct
28 Correct 697 ms 2040 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 407 ms 3444 KB Output is correct
2 Execution timed out 9012 ms 7320 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 504 KB Output is correct
2 Correct 13 ms 504 KB Output is correct
3 Correct 54 ms 764 KB Output is correct
4 Correct 55 ms 760 KB Output is correct
5 Correct 49 ms 760 KB Output is correct
6 Correct 48 ms 760 KB Output is correct
7 Correct 48 ms 760 KB Output is correct
8 Correct 48 ms 760 KB Output is correct
9 Correct 49 ms 760 KB Output is correct
10 Correct 50 ms 760 KB Output is correct
11 Correct 50 ms 888 KB Output is correct
12 Correct 49 ms 888 KB Output is correct
13 Correct 48 ms 760 KB Output is correct
14 Correct 48 ms 760 KB Output is correct
15 Correct 47 ms 760 KB Output is correct
16 Correct 47 ms 760 KB Output is correct
17 Correct 46 ms 760 KB Output is correct
18 Correct 46 ms 888 KB Output is correct
19 Correct 612 ms 2040 KB Output is correct
20 Correct 806 ms 2292 KB Output is correct
21 Correct 709 ms 2296 KB Output is correct
22 Correct 718 ms 2300 KB Output is correct
23 Correct 728 ms 2040 KB Output is correct
24 Correct 728 ms 2168 KB Output is correct
25 Correct 710 ms 2168 KB Output is correct
26 Correct 713 ms 2044 KB Output is correct
27 Correct 692 ms 2040 KB Output is correct
28 Correct 697 ms 2040 KB Output is correct
29 Correct 407 ms 3444 KB Output is correct
30 Execution timed out 9012 ms 7320 KB Time limit exceeded
31 Halted 0 ms 0 KB -