oj.uz

답안 #124326

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
124326 2019-07-03T04:57:44 Z arnold518 Bubble Sort 2 (JOI18_bubblesort2) C++14
38 / 100
 9000 ms 7064 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_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 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]+lazy[node*2], tree[node*2+1]+lazy[node*2+1]);
    }

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

    void update_change(int pos, ll val)
    {
        //printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!%lld\n", read(1, 1, N, pos));
        update_change(1, 1, N, pos, val-read(1, 1, N, pos));
    }

    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(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(bef, NEGINF);
            seg.update_change(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(bef, NEGINF);
            seg.update_change(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_range(int, int, int, int, int, ll)':
bubblesort2.cpp:46:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
bubblesort2.cpp: In member function 'void SEG::update_change(int, int, int, int, ll)':
bubblesort2.cpp:61:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
bubblesort2.cpp: In member function 'll SEG::read(int, int, int, int)':
bubblesort2.cpp:71:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int mid=tl+tr>>1;
                 ~~^~~
bubblesort2.cpp: In member function 'void SEG::debug(int, int, int)':
bubblesort2.cpp:90:19: 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:115:15: 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:116:15: 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:117:15: 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:113:12: 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 380 KB Output is correct
2 Correct 13 ms 504 KB Output is correct
3 Correct 55 ms 760 KB Output is correct
4 Correct 55 ms 760 KB Output is correct
5 Correct 50 ms 828 KB Output is correct
6 Correct 48 ms 760 KB Output is correct
7 Correct 48 ms 760 KB Output is correct
8 Correct 49 ms 760 KB Output is correct
9 Correct 49 ms 760 KB Output is correct
10 Correct 51 ms 636 KB Output is correct
11 Correct 51 ms 760 KB Output is correct
12 Correct 50 ms 760 KB Output is correct
13 Correct 49 ms 760 KB Output is correct
14 Correct 50 ms 760 KB Output is correct
15 Correct 49 ms 760 KB Output is correct
16 Correct 50 ms 752 KB Output is correct
17 Correct 48 ms 632 KB Output is correct
18 Correct 47 ms 764 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 380 KB Output is correct
2 Correct 13 ms 504 KB Output is correct
3 Correct 55 ms 760 KB Output is correct
4 Correct 55 ms 760 KB Output is correct
5 Correct 50 ms 828 KB Output is correct
6 Correct 48 ms 760 KB Output is correct
7 Correct 48 ms 760 KB Output is correct
8 Correct 49 ms 760 KB Output is correct
9 Correct 49 ms 760 KB Output is correct
10 Correct 51 ms 636 KB Output is correct
11 Correct 51 ms 760 KB Output is correct
12 Correct 50 ms 760 KB Output is correct
13 Correct 49 ms 760 KB Output is correct
14 Correct 50 ms 760 KB Output is correct
15 Correct 49 ms 760 KB Output is correct
16 Correct 50 ms 752 KB Output is correct
17 Correct 48 ms 632 KB Output is correct
18 Correct 47 ms 764 KB Output is correct
19 Correct 624 ms 1912 KB Output is correct
20 Correct 923 ms 2040 KB Output is correct
21 Correct 738 ms 2040 KB Output is correct
22 Correct 735 ms 2040 KB Output is correct
23 Correct 744 ms 1964 KB Output is correct
24 Correct 752 ms 1912 KB Output is correct
25 Correct 735 ms 2040 KB Output is correct
26 Correct 737 ms 1916 KB Output is correct
27 Correct 740 ms 1820 KB Output is correct
28 Correct 749 ms 1784 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 415 ms 3440 KB Output is correct
2 Execution timed out 9052 ms 7064 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 380 KB Output is correct
2 Correct 13 ms 504 KB Output is correct
3 Correct 55 ms 760 KB Output is correct
4 Correct 55 ms 760 KB Output is correct
5 Correct 50 ms 828 KB Output is correct
6 Correct 48 ms 760 KB Output is correct
7 Correct 48 ms 760 KB Output is correct
8 Correct 49 ms 760 KB Output is correct
9 Correct 49 ms 760 KB Output is correct
10 Correct 51 ms 636 KB Output is correct
11 Correct 51 ms 760 KB Output is correct
12 Correct 50 ms 760 KB Output is correct
13 Correct 49 ms 760 KB Output is correct
14 Correct 50 ms 760 KB Output is correct
15 Correct 49 ms 760 KB Output is correct
16 Correct 50 ms 752 KB Output is correct
17 Correct 48 ms 632 KB Output is correct
18 Correct 47 ms 764 KB Output is correct
19 Correct 624 ms 1912 KB Output is correct
20 Correct 923 ms 2040 KB Output is correct
21 Correct 738 ms 2040 KB Output is correct
22 Correct 735 ms 2040 KB Output is correct
23 Correct 744 ms 1964 KB Output is correct
24 Correct 752 ms 1912 KB Output is correct
25 Correct 735 ms 2040 KB Output is correct
26 Correct 737 ms 1916 KB Output is correct
27 Correct 740 ms 1820 KB Output is correct
28 Correct 749 ms 1784 KB Output is correct
29 Correct 415 ms 3440 KB Output is correct
30 Execution timed out 9052 ms 7064 KB Time limit exceeded
31 Halted 0 ms 0 KB -