Submission #217651

#	Time	Username	Problem	Language	Result	Execution time	Memory
217651		Sho10	XORanges (eJOI19_xoranges)	C++14	0 / 100	6 ms	768 KiB

xoranges

/*
ID: Sho10
LANG: C++
*/
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long int
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define sz size
#define f first
#define s second
#define pb push_back
#define er erase
#define in insert
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod 1000000007
#define PI 3.14159265359
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll n,q,a[5005],l,r;
int32_t main(){
CODE_START;
cin>>n>>q;
for(ll i=1;i<=n;i++)
{
    cin>>a[i];
}
while(q--){
        ll t;
    cin>>t;
if(t==1){
    cin>>l>>r;
    a[l]=r;
}else if(t==2){
    cin>>l>>r;
ll s1=0;
ll val=0;
for(ll i=l;i<=r;i++)
{
    if(s1%2==0){
        val=(val^a[i]);
        s1++;
    }else {
    s1++;
    }
}
cout<<val<<endl;
}
}
}

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