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Submission #437437

# Submission time Handle Problem Language Result Execution time Memory
437437 2021-06-26T10:15:21 Z MinhQNgo XORanges (eJOI19_xoranges) C++17
55 / 100
 9 ms 460 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 5005;

int a[N];
long long p[N];

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);

    int n, q;
    cin >> n >> q;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        p[i] = p[i - 1] ^ a[i];
    }
    for (int _ = 0; _ < q; _++) {
        int t, x, y;
        cin >> t >> x >> y;
        if (t == 1) a[x] = y;
        else {
            if (x % 2 != y % 2) {
                cout << 0 << '\n';
            }
            else {
                long long ans = 0;
                for (int i = x; i <= y; i += 2) ans ^= a[i];
                cout << ans << '\n';
            }
        }
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 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 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
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 4 ms 332 KB Output is correct
12 Correct 4 ms 424 KB Output is correct
13 Correct 7 ms 460 KB Output is correct
14 Correct 9 ms 452 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 460 KB Execution killed with signal 11
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 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
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 4 ms 332 KB Output is correct
12 Correct 4 ms 424 KB Output is correct
13 Correct 7 ms 460 KB Output is correct
14 Correct 9 ms 452 KB Output is correct
15 Runtime error 2 ms 460 KB Execution killed with signal 11
16 Halted 0 ms 0 KB -