oj.uz

Submission #999742

# Submission time Handle Problem Language Result Execution time Memory
999742 2024-06-16T06:08:22 Z vjudge1 XORanges (eJOI19_xoranges) C++17
100 / 100
 297 ms 14092 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define pb push_back
#define pf push_front
#define pi pair<int,int>

const int MAX  = 2e5+1;


ll odd[MAX*4], even[MAX*4];
ll arr[MAX];

void build_odd(int v, int l, int r){
    if(l==r){
        if(l%2==1){ 
            
            odd[v] =arr[l];
        }
        return;
    }
    int m =(l+r)/2;
    build_odd(v*2,l,m);
    build_odd(v*2+1,m+1,r);
    odd[v] = odd[v*2]^odd[v*2+1];
}

void build_even(int v, int l, int r){
    if(l==r){
        
       
        if(l%2==0){
        even[v] =arr[l];
        }
        return;
    }
    int m =(l+r)/2;
    build_even(v*2,l,m);
    build_even(v*2+1,m+1,r);
    even[v] = even[v*2]^even[v*2+1];
}

void update_even(int v, int l, int r, int pos , int val){
    if(l==r){
        even[v] = val;
        return;
    }
    int m = (l+r)/2;
   
    if(pos<=m) update_even(v*2,l,m,pos,val);
    else update_even(v*2+1,m+1,r,pos,val);
    even[v]= even[v*2]^even[v*2+1];
}


void update_odd(int v, int l, int r, int pos , int val){
    if(l==r){
        odd[v] = val;
        return;
    }
    int m = (l+r)/2;
   
    if(pos<=m) update_odd(v*2,l,m,pos,val);
    else update_odd(v*2+1,m+1,r,pos,val);
    odd[v]= odd[v*2]^odd[v*2+1];
}



ll get_odd(int v, int l, int r, int fl, int fr){
    if(fl>fr) return 0;
    else if(l==fl && r==fr) return odd[v];
    int m = (l+r)/2;
    ll a= get_odd(v*2,l,m,fl,min(fr,m));
    ll b = get_odd(v*2+1,m+1,r,max(fl,m+1),fr);
    return a^b;
}


ll get_even(int v, int l, int r, int fl, int fr){
    if(fl>fr) return 0;
    else if(l==fl && r==fr) return even[v];
    int m = (l+r)/2;
    ll a= get_even(v*2,l,m,fl,min(fr,m));
    ll b = get_even(v*2+1,m+1,r,max(fl,m+1),fr);
    return a^b;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,q;
    cin >> n >> q;
    for(int i  = 1; i <= n; i++){
        cin >> arr[i];
    }
    
    
    build_odd(1,1,n);
    build_even(1,1,n);
    int type,a,b;
    while(q--){
        cin >> type >> a >> b;
        if(type==2){
            if((b-a+1)%2==0){
                cout << 0 << endl;
            }
            else if(a%2==1) cout << get_odd(1,1,n,a,b)<< endl;
            else cout<<  get_even(1,1,n,a,b)<<endl;
        }
        else{
            if(a%2==1) update_odd(1,1,n,a,b);
            else update_even(1,1,n,a,b);
        }
    }
    
    
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4564 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4564 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 5 ms 4440 KB Output is correct
12 Correct 5 ms 4444 KB Output is correct
13 Correct 13 ms 4604 KB Output is correct
14 Correct 7 ms 4444 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 297 ms 13904 KB Output is correct
2 Correct 279 ms 14092 KB Output is correct
3 Correct 287 ms 13912 KB Output is correct
4 Correct 291 ms 13988 KB Output is correct
5 Correct 291 ms 13904 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4564 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 5 ms 4440 KB Output is correct
12 Correct 5 ms 4444 KB Output is correct
13 Correct 13 ms 4604 KB Output is correct
14 Correct 7 ms 4444 KB Output is correct
15 Correct 297 ms 13904 KB Output is correct
16 Correct 279 ms 14092 KB Output is correct
17 Correct 287 ms 13912 KB Output is correct
18 Correct 291 ms 13988 KB Output is correct
19 Correct 291 ms 13904 KB Output is correct
20 Correct 189 ms 13396 KB Output is correct
21 Correct 177 ms 13648 KB Output is correct
22 Correct 182 ms 13464 KB Output is correct
23 Correct 273 ms 13952 KB Output is correct
24 Correct 271 ms 13908 KB Output is correct