oj.uz

Submission #1012120

# Submission time Handle Problem Language Result Execution time Memory
1012120 2024-07-01T16:36:30 Z mkkkkkkkk XORanges (eJOI19_xoranges) C++14
55 / 100
 1000 ms 4960 KB 
#include <bits/stdc++.h>
using namespace std;


long long tree[4*500000];
vector<int> vec;

void build(int node,int l,int r)
{
    if(l==r)
    {
        tree[node]=vec[l];
    }
    else
    {
        int m=(l+r)/2;
        build(node*2+1,l,m);
        build(node*2+2,m+1,r);
        tree[node]=min(tree[node*2+1],tree[node*2+2]);
    }
}
void upd(int node,int pos,int x,int l,int r)
{
    if(l==r)
    {
        tree[node]+=x;
        return;
    }
    else
        {
            int m=(l+r)/2;
            if(pos<=m)
            {
                upd(node*2+1,pos,x,l,m);
            }
            else
            {
                upd(node*2+2,pos,x,m+1,r);
            }
            tree[node]=tree[node*2+1]+tree[node*2+2];
        }
        
}
long long sum(int node,int l, int r,int L,int R)
{
    if(l>R || r<L)
    {
        return 0;
    }
    else if(l>=L && r<=R)
    {
        return tree[node];
    }
    else
    {
        int m=(l+r)/2;
        return sum(node*2+1,l,m,L,R)+sum(node*2+2,m+1,r,L,R);
    }
    
}

int main()
{
    int n,q;
    cin>>n>>q;
    vector<int> vec;
    for(;n>0;n--)
    {
        int x;
        cin>>x;
        vec.push_back(x);
    }
    for(;q>0;q--)
    {
        int x;
        cin>>x;
        if(x==1)
        {
            int a,b;
            cin>>a>>b;
            vec[a-1]=b;
        }
        else
        {
            int a,b;
            cin>>a>>b;
            if((b-a+1)%2==0)
            {
                cout<<0<<endl;
            }
            else
            {
                int res=-1;
                int br=0;
                for(int i=a-1;i<b;i=i+2)
                {
                    if(res==-1)
                    res=vec[i];
                    else
                    {
                        res=res^vec[i];
                    }
                }
                cout<<res<<endl;
            }
            
        }
    }
    
    return 0;
}

Compilation message

xoranges.cpp: In function 'int main()':
xoranges.cpp:94:21: warning: unused variable 'br' [-Wunused-variable]
   94 |                 int br=0;
      |                     ^~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 448 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 9 ms 632 KB Output is correct
12 Correct 7 ms 624 KB Output is correct
13 Correct 12 ms 600 KB Output is correct
14 Correct 14 ms 604 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1065 ms 4960 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 9 ms 632 KB Output is correct
12 Correct 7 ms 624 KB Output is correct
13 Correct 12 ms 600 KB Output is correct
14 Correct 14 ms 604 KB Output is correct
15 Execution timed out 1065 ms 4960 KB Time limit exceeded
16 Halted 0 ms 0 KB -