Submission #1235330

#	Time	Username	Problem	Language	Result	Execution time	Memory
1235330		GoBananas69	XORanges (eJOI19_xoranges)	C++20	12 / 100	1094 ms	1092 KiB

xoranges

#include <algorithm>
#include <iostream>
#include <vector>
// #include "outputdebug.cpp"

typedef long long ll;
using namespace std;

int main() {
    cin.tie(0) -> sync_with_stdio(0);

    int n, q;
    cin >> n >> q;
    vector<int> nums(n);
    for (int &x : nums) cin >> x;

    while (q--) {
        int type;
        cin >> type;
        if (type == 1) {
            int p, v;
            cin >> p >> v;
            --p;
            nums[p] = v;
        } else if (type == 2) {
            int l, r;
            cin >> l >> r;
            --l; --r;
            // Print all contiguous subarrays in [l..r]
            int res = 0;
            for (int i = l; i <= r; ++i) {
                for (int j = i; j <= r; ++j) {
                    for (int k = i; k <= j; ++k) {
                        res ^= nums[k];
                    }
                }
            }
            cout << res << '\n';
        }
    }

    return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 18
• Subtask 3: 0 / 25
• Subtask 4: 0 / 20
• Subtask 5: 0 / 25