// -------------------- Includes -------------------- //
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <stdio.h>
#include <cstdlib>
#include <stdlib.h>
#include <array>
#include <string>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <math.h>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <bitset>
#include <list>
#include <iterator>
#include <numeric>
#include <complex>
#include <tuple>
#include <utility>
#include <cassert>
#include <assert.h>
#include <climits>
#include <limits.h>
#include <ctime>
#include <time.h>
#include <random>
#include <chrono>
#include <fstream>
using namespace std;
// -------------------- Typedefs -------------------- //
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
// -------------------- Defines -------------------- //
#define pr pair
#define mpr make_pair
#define ff first
#define ss second
#define mset multiset
#define mmap multimap
#define uset unordered_set
#define umap unordered_map
#define umset unordered_multiset
#define ummap unordered_multimap
#define pqueue priority_queue
#define sz(x) (int)x.size()
#define len(x) (int)x.length()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define clr(x) x.clear()
#define pf push_front
#define pb push_back
#define popf pop_front
#define popb pop_back
#define ft front
#define bk back
#define lb lower_bound
#define ub upper_bound
#define bs binary_search
void fastio()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
return;
}
struct node
{
int ans, xr, sz;
};
const int N = 200005;
int a[N];
int n;
node t[N * 4];
int t1[N * 4], t2[N * 4];
int qry1(int tl, int tr, int l, int r, int pos);
int qry2(int tl, int tr, int l, int r, int pos);
vector<int> v;
node merge(node a, node b, int tl, int tr)
{
node res;
res.ans = (a.ans ^ b.ans);
res.xr = (a.xr ^ b.xr);
res.sz = a.sz + b.sz;
int m = (tl + tr) / 2;
if (a.sz % 2 == 1) {
if (tr % 2 == 1) {
res.ans ^= qry1(1, n, m + 1, tr, 1);
}
else {
res.ans ^= qry2(1, n, m + 1, tr, 1);
}
}
if (b.sz % 2 == 1) {
if (tl % 2 == 1) {
res.ans ^= qry1(1, n, tl, m, 1);
}
else {
res.ans ^= qry2(1, n, tl, m, 1);
}
}
return res;
}
void bld(int tl, int tr, int pos)
{
if (tl == tr) {
t[pos].ans = t[pos].xr = a[tl];
t[pos].sz = 1;
if (tl % 2 == 1) {
t1[pos] = a[tl];
t2[pos] = 0;
}
else {
t1[pos] = 0;
t2[pos] = a[tl];
}
return;
}
int m = (tl + tr) / 2;
bld(tl, m, pos * 2);
bld(m + 1, tr, pos * 2 + 1);
t[pos] = merge(t[pos * 2], t[pos * 2 + 1], tl, tr);
t1[pos] = (t1[pos * 2] ^ t1[pos * 2 + 1]);
t2[pos] = (t2[pos * 2] ^ t2[pos * 2 + 1]);
return;
}
void upd(int tl, int tr, int ind, int x, int pos)
{
if (tl == tr) {
t[pos].ans = t[pos].xr = x;
if (tl % 2 == 1) {
t1[pos] = a[tl];
t2[pos] = 0;
}
else {
t1[pos] = 0;
t2[pos] = a[tl];
}
return;
}
int m = (tl + tr) / 2;
if (ind <= m) {
upd(tl, m, ind, x, pos * 2);
}
else {
upd(m + 1, tr, ind, x, pos * 2 + 1);
}
t[pos] = merge(t[pos * 2], t[pos * 2 + 1], tl, tr);
t1[pos] = (t1[pos * 2] ^ t1[pos * 2 + 1]);
t2[pos] = (t2[pos * 2] ^ t2[pos * 2 + 1]);
return;
}
int qry(int tl, int tr, int l, int r, int pos)
{
if (l > r) {
return 0;
}
if (tl == l && tr == r) {
return t[pos].ans;
}
int m = (tl + tr) / 2;
return (qry(tl, m, l, min(m, r), pos * 2) ^ qry(m + 1, tr, max(m + 1, l), r, pos * 2 + 1));
}
int qry1(int tl, int tr, int l, int r, int pos)
{
if (l > r) {
return 0;
}
if (tl == l && tr == r) {
return t1[pos];
}
int m = (tl + tr) / 2;
return (qry1(tl, m, l, min(m, r), pos * 2) ^ qry1(m + 1, tr, max(m + 1, l), r, pos * 2 + 1));
}
int qry2(int tl, int tr, int l, int r, int pos)
{
if (l > r) {
return 0;
}
if (tl == l && tr == r) {
return t2[pos];
}
int m = (tl + tr) / 2;
return (qry2(tl, m, l, min(m, r), pos * 2) ^ qry2(m + 1, tr, max(m + 1, l), r, pos * 2 + 1));
}
int main()
{
int i, j;
int q;
cin >> n >> q;
for (i = 1; i <= n; i++) {
cin >> a[i];
}
bld(1, n, 1);
for (i = 1; i <= q; i++) {
int type;
cin >> type;
if (type == 1) {
int ind, x;
cin >> ind >> x;
upd(1, n, ind, x, 1);
}
else {
int l, r;
cin >> l >> r;
v.pb(qry(1, n, l, r, 1));
}
}
for (auto i : v) {
cout << i << endl;
}
return 0;
}
Compilation message
xoranges.cpp: In function 'int main()':
xoranges.cpp:231:9: warning: unused variable 'j' [-Wunused-variable]
231 | int i, j;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
779 ms |
14144 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
