Submission #890295

#	Time	Username	Problem	Language	Result	Execution time	Memory
890295		12345678	XORanges (eJOI19_xoranges)	C++17	0 / 100	67 ms	8016 KiB

xoranges

#include <bits/stdc++.h>

using namespace std;

const int nx=2e5+5;
int n, q, a[nx], t, l, r, idx, vl, res;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>q;
    for (int i=1; i<=n; i++) cin>>a[i];
    //cout<<"here "<<(3^2^3^4^5^(3^2)^(2^3)^(3^4)^(4^5)^(3^2^3)^(2^3^4)^(3^4^5))<<'\n';
    while (q--)
    {
        cin>>t;
        if (t==1) cin>>idx>>a[idx];
        else
        {
            cin>>l>>r;
            if (l==r) res=a[l];
            else if (l+1==r) res=0;
            else if (l+2==r) res=a[l]^a[r];
            else res=a[l]^a[l+1]^a[r-1]^a[r];
            cout<<res<<'\n';
        }
    }
}

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