oj.uz

Submission #753084

# Submission time Handle Problem Language Result Execution time Memory
753084 2023-06-04T14:36:18 Z MateiKing80 XORanges (eJOI19_xoranges) C++14
100 / 100
 518 ms 11992 KB 
#include <iostream>

using namespace std;

long long v[200005];
long long aint1[1000005];
long long aint2[1000005];


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 2 ms 212 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 1 ms 340 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 2 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 11 ms 468 KB Output is correct
12 Correct 9 ms 468 KB Output is correct
13 Correct 12 ms 500 KB Output is correct
14 Correct 12 ms 504 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 516 ms 7116 KB Output is correct
2 Correct 509 ms 11992 KB Output is correct
3 Correct 501 ms 11944 KB Output is correct
4 Correct 494 ms 11640 KB Output is correct
5 Correct 474 ms 11660 KB Output is correct

Subtask #5
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 2 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 11 ms 468 KB Output is correct
12 Correct 9 ms 468 KB Output is correct
13 Correct 12 ms 500 KB Output is correct
14 Correct 12 ms 504 KB Output is correct
15 Correct 516 ms 7116 KB Output is correct
16 Correct 509 ms 11992 KB Output is correct
17 Correct 501 ms 11944 KB Output is correct
18 Correct 494 ms 11640 KB Output is correct
19 Correct 474 ms 11660 KB Output is correct
20 Correct 417 ms 11936 KB Output is correct
21 Correct 395 ms 11756 KB Output is correct
22 Correct 439 ms 11736 KB Output is correct
23 Correct 518 ms 11748 KB Output is correct
24 Correct 500 ms 11644 KB Output is correct