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Submission #999761

# Submission time Handle Problem Language Result Execution time Memory
999761 2024-06-16T06:27:40 Z vjudge1 XORanges (eJOI19_xoranges) C++17
100 / 100
 90 ms 16116 KB 
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
const ll sz=2e5+5;
ll s1[sz*4], s2[sz*4], a[sz], b[sz];
void build1(ll l, ll r, ll in)
{
    if(l==r){
        s1[in]=a[l];
        return;
    }
    ll mid=(l+r)/2;
    build1(l, mid, in*2);
    build1(mid+1, r, in*2+1);
    s1[in]=(s1[in*2]^s1[in*2+1]);
}
void build2(ll l, ll r, ll in)
{
    if(l==r){
        s2[in]=b[l];
        return;
    }
    ll mid=(l+r)/2;
    build2(l, mid, in*2);
    build2(mid+1, r, in*2+1);
    s2[in]=(s2[in*2]^s2[in*2+1]);
}
void update1(ll l, ll r, ll in, ll ind, ll val)
{
    if(ind<l || ind>r) return;
    if(l==r){
        s1[in]=val;
        return;
    }
    ll mid=(l+r)/2;
    update1(l, mid, in*2, ind, val);
    update1(mid+1, r, in*2+1, ind, val);
    s1[in]=(s1[in*2]^s1[in*2+1]);
}
void update2(ll l, ll r, ll in, ll ind, ll val)
{
    if(ind<l || ind>r) return;
    if(l==r){
        s2[in]=val;
        return;
    }
    ll mid=(l+r)/2;
    update2(l, mid, in*2, ind, val);
    update2(mid+1, r, in*2+1, ind, val);
    s2[in]=(s2[in*2]^s2[in*2+1]);
}
ll ans1(ll l, ll r, ll in, ll ql, ll qr)
{
    if(ql>r || qr<l) return 0;
    if(ql<=l && r<=qr){
        return s1[in];
    }
    ll mid=(l+r)/2;
    return (ans1(l, mid, in*2, ql, qr)^ans1(mid+1, r, in*2+1, ql, qr));
}
ll ans2(ll l, ll r, ll in, ll ql, ll qr)
{
    if(ql>r || qr<l) return 0;
    if(ql<=l && r<=qr){
        return s2[in];
    }
    ll mid=(l+r)/2;
    return (ans2(l, mid, in*2, ql, qr)^ans2(mid+1, r, in*2+1, ql, qr));
}
int main()
{
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    ll n, q;
    cin>>n>>q;
    for(int i=1; i<=n; i++){
        if(i%2){
            cin>>a[i];
        }
        else{
            cin>>b[i];
        }
    }
    build1(1, n, 1);
    build2(1, n, 1);
    while(q--){
        ll t, l, r;
        cin>>t>>l>>r;
        if(t==1){
            if(l%2){
                update1(1, n, 1, l, r);
            }
            else{
                update2(1, n, 1, l, r);
            }
        }
        else{
            if((l-r+1)%2==0){
                cout<<0<<endl;
            }
            else{
                if(l%2){
                    cout<<ans1(1, n, 1, l, r)<<endl;
                }
                else{
                    cout<<ans2(1, n, 1, l, r)<<endl;
                }
            }
        }
    }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6576 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6488 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6576 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 3 ms 6492 KB Output is correct
12 Correct 3 ms 6492 KB Output is correct
13 Correct 3 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 16116 KB Output is correct
2 Correct 82 ms 15952 KB Output is correct
3 Correct 85 ms 15996 KB Output is correct
4 Correct 74 ms 15956 KB Output is correct
5 Correct 73 ms 15996 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6576 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6488 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 3 ms 6492 KB Output is correct
12 Correct 3 ms 6492 KB Output is correct
13 Correct 3 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 81 ms 16116 KB Output is correct
16 Correct 82 ms 15952 KB Output is correct
17 Correct 85 ms 15996 KB Output is correct
18 Correct 74 ms 15956 KB Output is correct
19 Correct 73 ms 15996 KB Output is correct
20 Correct 80 ms 15552 KB Output is correct
21 Correct 79 ms 15440 KB Output is correct
22 Correct 90 ms 15564 KB Output is correct
23 Correct 74 ms 15912 KB Output is correct
24 Correct 75 ms 15956 KB Output is correct