Submission #1068833

#	Time	Username	Problem	Language	Result	Execution time	Memory
1068833		adrielcp	XORanges (eJOI19_xoranges)	C++17	0 / 100	1072 ms	5688 KiB

xoranges

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define debug(x) cout << #x << " " << (x) << endl;
#define all(x) x.begin(), x.end()
void pp(pair<int, int>&a) { cout << "{" << a.first << ", " << a.second << endl; }
void g(vector<int>&a) { cout << "{"; for (auto el : a) cout << el << ", "; cout << "}" << endl; }
void g(vector<pair<int, int>>&a) { cout << "{"; for (auto el : a) pp(el); cout << "}" << endl; }
// #define DBG

void solve() {
  int n,q;cin>>n>>q;
  vector<int> a(n);
  for (int i = 0; i < n; i++) cin >> a[i];

  while (q--) {
    int t,x,y;cin>>t>>x>>y;
    if (t==1) {
      // upd
      a[x-1] = y;
    } else {
      if ((y-x+1) % 2 == 0) cout << 0 << endl;
      else {
        int xo = 0;
        for (int i = x-1; i <= y-1; i += 2) xo ^= a[i];
        cout << xo << endl;
      }
    }
  }

  g(a);
}

int32_t main() {
  ios_base::sync_with_stdio(0);cin.tie(NULL);
  int t=1;
  #ifdef DBG
  freopen("inp1.txt", "r", stdin);
  freopen("out.txt", "w", stdout);
  cin>>t;
  #endif
  while (t--) {
    solve();
    cout << endl;
  }
  return 0;
}

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