Submission #609103

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
609103	2022-07-27 12:15:56	AliHasanli	XORanges (eJOI19_xoranges)	C++17	100 / 100	139 ms	8652 KiB

xoranges

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#include <bits/stdc++.h>
using namespace std;
const int MAX = 200001;
int t[2][MAX];
int arr[MAX];
void inc(int id, int i, int dx) {
    for (; i < MAX; i |= i + 1) {
        t[id][i] ^= dx;
    }
}
int sum(int id, int i) {
    int res = 0;
    for (; i > 0; i = (i & (i + 1)) - 1) {
        res ^= t[id][i];
    }
    return res;
}
int main() {
    int n, q;
    scanf("%d%d", &n, &q);
    for (int i = 1; i <= n; ++i) {
        scanf("%d", &arr[i]);
        inc(i & 1, i, arr[i]);
    }
    while (q--) {
        int qt, l, r;
        scanf("%d%d%d", &qt, &l, &r);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

xoranges.cpp: In function 'int main()':
xoranges.cpp:23:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |     scanf("%d%d", &n, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~
xoranges.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         scanf("%d", &arr[i]);
      |         ~~~~~^~~~~~~~~~~~~~~
xoranges.cpp:30:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         scanf("%d%d%d", &qt, &l, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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