oj.uz

Submission #752735

# Submission time Handle Problem Language Result Execution time Memory
752735 2023-06-03T14:17:48 Z MateiKing80 XORanges (eJOI19_xoranges) C++14
55 / 100
 513 ms 6140 KB 
#include <iostream>

using namespace std;

long long v[200005];
long long aint1[200005];
long long aint2[200005];


void build1(long long poz, long long st, long long dr)
{
    if(st==dr)
    {
        aint1[poz]=v[2*st-1];
        return;
    }
    long long 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(long long poz, long long st, long long dr)
{
    if(st==dr)
    {
        aint2[poz]=v[2*st];
        return;
    }
    long long 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(long long poz, long long st, long long dr, long long a, long long b)
{
    if(st==dr)
    {
        aint1[poz]=b;
        return;
    }
    long long 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(long long poz, long long st, long long dr, long long a, long long b)
{
    if(st==dr)
    {
        aint2[poz]=b;
        return;
    }
    long long 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]);
}


long long query1(long long poz, long long st, long long dr, long long a, long long b)
{
    if(a<=st && dr<=b)
        return aint1[poz];
    long long 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));
}

long long query2(long long poz, long long st, long long dr, long long a, long long b)
{
    if(a<=st && dr<=b)
        return aint2[poz];
    long long 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()
{
    long long n,q;
    cin>>n>>q;
    for(long long i=1;i<=n;i++)
        cin>>v[i];
    build1(1,1,(n+1)/2);
    build2(1,1,n/2);
    for(long long i=0;i<q;i++)
    {
        long long 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 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 212 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 2 ms 212 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 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 2 ms 212 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 9 ms 468 KB Output is correct
12 Correct 10 ms 468 KB Output is correct
13 Correct 12 ms 508 KB Output is correct
14 Correct 13 ms 468 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 513 ms 6140 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 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 3 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 2 ms 212 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 9 ms 468 KB Output is correct
12 Correct 10 ms 468 KB Output is correct
13 Correct 12 ms 508 KB Output is correct
14 Correct 13 ms 468 KB Output is correct
15 Incorrect 513 ms 6140 KB Output isn't correct
16 Halted 0 ms 0 KB -