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Submission #791854

# Submission time Handle Problem Language Result Execution time Memory
791854 2023-07-24T11:26:16 Z Piokemon XORanges (eJOI19_xoranges) C++17
100 / 100
 102 ms 9476 KB 
#include <bits/stdc++.h>
using namespace std;

constexpr int base = 262144;
int tree_par[base*2+9];
int tree_nie[base*2+9];

void add_par(int x, int val){
    x += base-1;
    tree_par[x] = val;
    x = x/2;
    while(x>0){
        tree_par[x] = tree_par[2*x] ^ tree_par[2*x+1];
        x = x/2;
    }
}

void add_nie(int x, int val){
    x += base-1;
    tree_nie[x] = val;
    x = x/2;
    while(x>0){
        tree_nie[x] = tree_nie[2*x] ^ tree_nie[2*x+1];
        x = x/2;
    }
}

int query_par(int a, int b, int p, int k, int x){
    if (p<=a && b<=k){
        return tree_par[x];
    }
    if (a>k || b<p){
        return 0;
    }
    int mid = (a+b)/2;
    return query_par(a,mid,p,k,2*x) ^ query_par(mid+1,b,p,k,2*x+1);
}

int query_nie(int a, int b, int p, int k, int x){
    if (p<=a && b<=k){
        return tree_nie[x];
    }
    if (a>k || b<p){
        return 0;
    }
    int mid = (a+b)/2;
    return query_nie(a,mid,p,k,2*x) ^ query_nie(mid+1,b,p,k,2*x+1);
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,k,t,a,b;
    cin >> n >> k;
    for (int x=1;x<=n;x++){
        cin >> a;
        if (x%2==1){
            add_nie(x,a);
        }
        else{
            add_par(x,a);
        }
    }
    while(k--){
        cin >> t >> a >> b;
        if(t==1){
            if (a%2==1){
                add_nie(a,b);
            }
            else{
                add_par(a,b);
            }
        }
        else{
            if ((b-a+1)%2==0){
                cout << "0\n";
            }
            else{
                if(a%2==1){
                    cout << query_nie(1,base,a,b,1) << "\n";
                }
                else{
                    cout << query_par(1,base,a,b,1) << "\n";
                }
            }
        }
    }
    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 0 ms 324 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 0 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 3 ms 596 KB Output is correct
13 Correct 3 ms 596 KB Output is correct
14 Correct 3 ms 584 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 9460 KB Output is correct
2 Correct 100 ms 9476 KB Output is correct
3 Correct 102 ms 9460 KB Output is correct
4 Correct 100 ms 9192 KB Output is correct
5 Correct 94 ms 9172 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 328 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 324 KB Output is correct
5 Correct 0 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 3 ms 596 KB Output is correct
13 Correct 3 ms 596 KB Output is correct
14 Correct 3 ms 584 KB Output is correct
15 Correct 101 ms 9460 KB Output is correct
16 Correct 100 ms 9476 KB Output is correct
17 Correct 102 ms 9460 KB Output is correct
18 Correct 100 ms 9192 KB Output is correct
19 Correct 94 ms 9172 KB Output is correct
20 Correct 87 ms 9160 KB Output is correct
21 Correct 90 ms 9236 KB Output is correct
22 Correct 94 ms 9280 KB Output is correct
23 Correct 92 ms 9164 KB Output is correct
24 Correct 97 ms 9132 KB Output is correct