oj.uz

Submission #673357

# Submission time Handle Problem Language Result Execution time Memory
673357 2022-12-20T10:47:49 Z Hanksburger XORanges (eJOI19_xoranges) C++17
100 / 100
 121 ms 9204 KB 
#include <bits/stdc++.h>
using namespace std;
int seg1[400005], seg2[400005], a[200005];
void build1(int i, int l, int r)
{
    if (l==r)
    {
        seg1[i]=a[l*2-1];
        return;
    }
    int m=(l+r)/2;
    build1(i*2, l, m);
    build1(i*2+1, m+1, r);
    seg1[i]=seg1[i*2]^seg1[i*2+1];
}
void build2(int i, int l, int r)
{
    if (l==r)
    {
        seg2[i]=a[l*2];
        return;
    }
    int m=(l+r)/2;
    build2(i*2, l, m);
    build2(i*2+1, m+1, r);
    seg2[i]=seg2[i*2]^seg2[i*2+1];
}
void update1(int i, int l, int r, int y, int z)
{
    if (l==r)
    {
        seg1[i]=a[l*2-1]=z;
        return;
    }
    int m=(l+r)/2;
    y<=m?update1(i*2, l, m, y, z):update1(i*2+1, m+1, r, y, z);
    seg1[i]=seg1[i*2]^seg1[i*2+1];
}
void update2(int i, int l, int r, int y, int z)
{
    if (l==r)
    {
        seg2[i]=a[l*2]=z;
        return;
    }
    int m=(l+r)/2;
    y<=m?update2(i*2, l, m, y, z):update2(i*2+1, m+1, r, y, z);
    seg2[i]=seg2[i*2]^seg2[i*2+1];
}
int query1(int i, int l, int r, int ql, int qr)
{
    if (ql<=l && r<=qr)
        return seg1[i];
    int m=(l+r)/2, x=0;
    if (ql<=m && l<=qr)
        x^=query1(i*2, l, m, ql, qr);
    if (ql<=r && m<qr)
        x^=query1(i*2+1, m+1, r, ql, qr);
    return x;
}
int query2(int i, int l, int r, int ql, int qr)
{
    if (ql<=l && r<=qr)
        return seg2[i];
    int m=(l+r)/2, x=0;
    if (ql<=m && l<=qr)
        x^=query2(i*2, l, m, ql, qr);
    if (ql<=r && m<qr)
        x^=query2(i*2+1, m+1, r, ql, qr);
    return x;
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, q;
    cin >> n >> q;
    for (int i=1; i<=n; i++)
        cin >> a[i];
    build1(1, 1, (n+1)/2);
    if (n>1)
        build2(1, 1, n/2);
    for (int i=1; i<=q; i++)
    {
        int x, y, z;
        cin >> x >> y >> z;
        if (x==1)
            y&1?update1(1, 1, (n+1)/2, (y+1)/2, z):update2(1, 1, n/2, y/2, z);
        else if ((z-y)&1)
            cout << 0 << '\n';
        else
            cout << ((z-y)&1?0:y&1?query1(1, 1, (n+1)/2, (y+1)/2, (z+1)/2):query2(1, 1, n/2, y/2, z/2)) << '\n';
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 340 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 3 ms 448 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 3 ms 440 KB Output is correct
14 Correct 3 ms 564 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 104 ms 9168 KB Output is correct
2 Correct 102 ms 9168 KB Output is correct
3 Correct 104 ms 9204 KB Output is correct
4 Correct 99 ms 8908 KB Output is correct
5 Correct 99 ms 8848 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 3 ms 448 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 3 ms 440 KB Output is correct
14 Correct 3 ms 564 KB Output is correct
15 Correct 104 ms 9168 KB Output is correct
16 Correct 102 ms 9168 KB Output is correct
17 Correct 104 ms 9204 KB Output is correct
18 Correct 99 ms 8908 KB Output is correct
19 Correct 99 ms 8848 KB Output is correct
20 Correct 121 ms 8908 KB Output is correct
21 Correct 113 ms 8856 KB Output is correct
22 Correct 105 ms 8912 KB Output is correct
23 Correct 99 ms 8824 KB Output is correct
24 Correct 97 ms 8820 KB Output is correct