oj.uz

답안 #898508

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
898508 2024-01-04T19:23:44 Z Denkata Segments (IZhO18_segments) C++14
15 / 100
 840 ms 7416 KB 
///mnogo trqbva da se vnimava s lower/upperbound queryta v pair
#include<bits/stdc++.h>
using namespace std;
const int maxn = 2e5+3;
const int crit = 2000;
int i,j,p,q,n,m,k,L,R,A,B,lans,id,lb[maxn],rb[maxn],block[maxn],minlen[maxn],t,curlen;
vector < pair <int,int> > cur,all;
vector < pair <int,int> > levi[100],desni[100];//n/crit
int removed[maxn];
void insert(int l,int r,int nom)
{
    cur.push_back({r-l+1,nom});
    if(cur.size()==crit)
    {
        vector <pair <int,int>> neww;

        for(i=0; i<=all.size()/crit+2; i++)
            levi[i].clear(),desni[i].clear(),minlen[i] = -1;
        for(auto i:cur)
            neww.push_back(i);
        for(auto i:all)
            neww.push_back(i);
        cur.clear();
        all.clear();
        for(auto i:neww)
        {
            if(!removed[i.second])
                all.push_back(i);
        }

        ///build the structure
        sort(all.rbegin(),all.rend());
        int bl = 0;
        int br = 0;
        int Min = INT_MAX;
        for(auto i:all)
        {
            levi[bl].push_back({lb[i.second],i.second});
            desni[bl].push_back({rb[i.second],i.second});
            Min = min(Min,i.first);
            block[i.second] = bl;
            br++;
            if(br==crit)
            {
                minlen[bl] = Min;
                Min = INT_MAX;
                bl++;
                br = 0;
            }
        }

        for(i=0; i<=all.size()/crit+2; i++)
        {
            if(levi[i].empty())break;
            sort(levi[i].begin(),levi[i].end());
            sort(desni[i].begin(),desni[i].end());
        }
    }
}
void remove(int id)
{
    removed[id] = true;
    if(block[id]==-1)
        return ;
    p = block[id];

    vector < pair <int,int> > newws;
    for(auto i:levi[p])
        if(i.second!=id)newws.push_back(i);
    levi[p] = newws;

    newws.clear();
    for(auto i:desni[p])
        if(i.second!=id)newws.push_back(i);
    desni[p] = newws;

    block[id] = -1;
}
int solve(int l,int r,int k)
{
    int ans = 0;
    for(auto i:cur)
    {
        //cout<<lb[i.second]<<" "<<rb[i.second]<<"    "<<l<<" "<<r<<" "<<k<<endl;
        if(min(rb[i.second],r)-max(lb[i.second],l)+1>=k)
            ans++;
    }
    for(i=0; i<=all.size()/crit+1; i++)
    {
        if(levi[i].empty())continue;
        if(minlen[i]<k)
        {
            ///iterative check
            j = i;
            for(auto i:levi[j])
            {
                if(removed[i.second])
                    continue;
                if(min(rb[i.second],r)-max(lb[i.second],l)+1>=k)
                    ans++;
            }
            break;
        }
        ans+=levi[i].size();
        p = 0;
        ///indexed from 0
        p += upper_bound(desni[i].begin(),desni[i].end(), make_pair(l+k-2,10000000))-desni[i].begin();
        p += levi[i].size()-(lower_bound(levi[i].begin(),levi[i].end(), make_pair(r-k+2,-1))-levi[i].begin());
        ans-=p;
    }
    return ans;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n>>t;
    for(i=0; i<=n; i++)
        block[i] = -1,minlen[i] = -1;
    lans = 0;
    while(n--)
    {
        int type;
        cin>>type;
        if(type==1)
        {
            cin>>A>>B;
            L = A^(t*lans);
            R = B^(t*lans);
            if(L>R)swap(L,R);
            curlen++;
            lb[curlen] = L;
            rb[curlen] = R;
            insert(L,R,curlen);
        }
        else if(type==2)
        {
            cin>>id;
            remove(id);
        }
        else
        {
            cin>>A>>B>>k;
            L = A^(t*lans);
            R = B^(t*lans);
            if(L>R)swap(L,R);
            lans = solve(L,R,k);
            cout<<lans<<endl;
        }
    }
    return 0;
}
/**
6 1
1 1 2
3 2 4 2
1 3 5
3 2 3 1
2 1
3 0 3 1



6 0
1 3 10
1 3 5
3 6 10 6
2 1
1 3 10
3 6 4 2
*/

Compilation message

segments.cpp: In function 'void insert(int, int, int)':
segments.cpp:17:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         for(i=0; i<=all.size()/crit+2; i++)
      |                  ~^~~~~~~~~~~~~~~~~~~
segments.cpp:52:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         for(i=0; i<=all.size()/crit+2; i++)
      |                  ~^~~~~~~~~~~~~~~~~~~
segments.cpp: In function 'int solve(int, int, int)':
segments.cpp:88:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |     for(i=0; i<=all.size()/crit+1; i++)
      |              ~^~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 788 ms 4908 KB Output is correct
2 Correct 798 ms 4788 KB Output is correct
3 Correct 840 ms 4680 KB Output is correct
4 Correct 688 ms 5128 KB Output is correct
5 Correct 445 ms 7104 KB Output is correct
6 Correct 447 ms 7416 KB Output is correct
7 Correct 766 ms 5016 KB Output is correct
8 Correct 805 ms 4932 KB Output is correct
9 Correct 773 ms 4780 KB Output is correct
10 Correct 796 ms 3604 KB Output is correct
11 Correct 750 ms 3968 KB Output is correct
12 Correct 620 ms 6184 KB Output is correct

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 124 ms 3020 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 115 ms 2900 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 2392 KB Output isn't correct
2 Halted 0 ms 0 KB -