oj.uz

Submission #752732

# Submission time Handle Problem Language Result Execution time Memory
752732 2023-06-03T14:16:10 Z MateiKing80 XORanges (eJOI19_xoranges) C++14
55 / 100
 506 ms 7836 KB 
#include <iostream>

using namespace std;

int v[200005];
int aint1[100005];
int aint2[100005];


void build1(int poz, int st, int dr)
{
    if(st==dr)
    {
        aint1[poz]=v[2*st-1];
        return;
    }
    int mid=(st+dr)/2;
    build1(2*poz,st,mid);
    build1(2*poz+1,mid+1,dr);
    aint1[poz]=(aint1[2*poz]^aint1[2*poz+1]);
}

void build2(int poz, int st, int dr)
{
    if(st==dr)
    {
        aint2[poz]=v[2*st];
        return;
    }
    int mid=(st+dr)/2;
    build2(2*poz,st,mid);
    build2(2*poz+1,mid+1,dr);
    aint2[poz]=(aint2[2*poz]^aint2[2*poz+1]);
}


void update1(int poz, int st, int dr, int a, int b)
{
    if(st==dr)
    {
        aint1[poz]=b;
        return;
    }
    int mid=(st+dr)/2;
    if(a<=mid)
        update1(2*poz,st,mid,a,b);
    else
        update1(2*poz+1,mid+1,dr,a,b);
    aint1[poz]=(aint1[2*poz]^aint1[2*poz+1]);
}

void update2(int poz, int st, int dr, int a, int b)
{
    if(st==dr)
    {
        aint2[poz]=b;
        return;
    }
    int mid=(st+dr)/2;
    if(a<=mid)
        update2(2*poz,st,mid,a,b);
    else
        update2(2*poz+1,mid+1,dr,a,b);
    aint2[poz]=(aint2[2*poz]^aint2[2*poz+1]);
}


int query1(int poz, int st, int dr, int a, int b)
{
    if(a<=st && dr<=b)
        return aint1[poz];
    int mid=(st+dr)/2;
    if(b<=mid)
        return query1(2*poz,st,mid,a,b);
    if(mid<a)
        return query1(2*poz+1,mid+1,dr,a,b);
    return (query1(2*poz,st,mid,a,b)^query1(2*poz+1,mid+1,dr,a,b));
}

int query2(int poz, int st, int dr, int a, int b)
{
    if(a<=st && dr<=b)
        return aint2[poz];
    int mid=(st+dr)/2;
    if(b<=mid)
        return query2(2*poz,st,mid,a,b);
    if(mid<a)
        return query2(2*poz+1,mid+1,dr,a,b);
    return (query2(2*poz,st,mid,a,b)^query2(2*poz+1,mid+1,dr,a,b));
}




int main()
{
    int n,q;
    cin>>n>>q;
    for(int i=1;i<=n;i++)
        cin>>v[i];
    build1(1,1,(n+1)/2);
    build2(1,1,n/2);
    for(int i=0;i<q;i++)
    {
        int cer,a,b;
        cin>>cer>>a>>b;
        if(cer==1)
        {
            if( (a%2) == 1)
                update1(1,1,(n+1)/2,a/2+1,b);
            else
                update2(1,1,n/2,a/2,b);
        }
        else
        {
            if((b-a)%2==1)
                cout<<0<<'\n';
            else if((a%2)==1)
                cout<<query1(1,1,(n+1)/2,a/2+1,b/2+1)<<'\n';
            else
                cout<<query2(1,1,n/2,a/2,b/2)<<'\n';
        }
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 312 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 2 ms 304 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 212 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 2 ms 316 KB Output is correct
4 Correct 2 ms 212 KB Output is correct
5 Correct 2 ms 212 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 312 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 2 ms 304 KB Output is correct
6 Correct 2 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 2 ms 316 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 10 ms 468 KB Output is correct
12 Correct 9 ms 448 KB Output is correct
13 Correct 11 ms 468 KB Output is correct
14 Correct 12 ms 468 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 506 ms 7836 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 312 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 2 ms 304 KB Output is correct
6 Correct 2 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 2 ms 316 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 10 ms 468 KB Output is correct
12 Correct 9 ms 448 KB Output is correct
13 Correct 11 ms 468 KB Output is correct
14 Correct 12 ms 468 KB Output is correct
15 Incorrect 506 ms 7836 KB Output isn't correct
16 Halted 0 ms 0 KB -