oj.uz

Submission #464073

# Submission time Handle Problem Language Result Execution time Memory
464073 2021-08-12T10:46:53 Z CyberCow XORanges (eJOI19_xoranges) C++17
55 / 100
 71 ms 65540 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <string>
#include <cmath>
#include <map>
#include <unordered_map>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <stack>
using namespace std;
using ll = long long;
vector <int> v, anc;
int s[800020];
void build(int p, int lp, int rp)
{
    if (lp == rp)
    {
        s[p] = v[lp];
        return;
    }
    int m = (lp + rp) / 2;
    build(p * 2, lp, m);
    build(p * 2 + 1, m + 1, rp);
    s[p] = s[p * 2] + s[p * 2 + 1];
}
int getxor(int p, int lp, int rp, int l, int r)
{
    if (l > r)
        return 0;
    if (lp == l && rp == r)
        return s[p];
    int m = (lp + rp) / 2;
    return getxor(p * 2, lp, m, l, min(m, r)) ^ getxor(p * 2 + 1, m + 1, rp, max(m, l), r);
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, q, i, j, x, ans = 0, c,y;
    cin >> n >> q;
    for ( i = 0; i < n; i++)
    {
        cin >> x;
        v.push_back(x);
    }
    if (n <= 5000 && q <= 5000)
    {
        ans = 0;
        int g = 0;
        for (i = 0; i < q; i++)
        {
            cin >> c >> x >> y;
            x--; y--;
            if (c == 1)
            {
                v[x] = y + 1;
            }
            else
            {
                int f = 0;
                for (j = x; j <= y; j++)
                {
                    if (((j - x + 1) * (y - j + 1)) % 2)
                        f = f ^ v[j];
                }
                ans = f;
                g = 1;
                cout << ans << '\n';
            }
        }
    }
    else
    {
        build(1, 0, n - 1);
        for ( i = 0; i < q; i++)
        {
            cin >> c >> x >> y;
            x--; y--;
            cout << getxor(1, 0, n - 1, x, y) << endl;
        }
    }
    return 0;
}

Compilation message

xoranges.cpp: In function 'int main()':
xoranges.cpp:53:13: warning: variable 'g' set but not used [-Wunused-but-set-variable]
   53 |         int g = 0;
      |             ^

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 8 ms 332 KB Output is correct
12 Correct 9 ms 588 KB Output is correct
13 Correct 28 ms 484 KB Output is correct
14 Correct 27 ms 480 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 71 ms 65540 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 8 ms 332 KB Output is correct
12 Correct 9 ms 588 KB Output is correct
13 Correct 28 ms 484 KB Output is correct
14 Correct 27 ms 480 KB Output is correct
15 Runtime error 71 ms 65540 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -