oj.uz

Submission #938784

# Submission time Handle Problem Language Result Execution time Memory
938784 2024-03-05T14:21:30 Z User0069 Klasika (COCI20_klasika) C++17
33 / 110
 696 ms 524288 KB 
#include<bits/stdc++.h>
#define taskname ""
#define el '\n'
#define fi first
#define sc second
#define pii pair<int, int>
#define all(v) v.begin(), v.end()
#define int ll
using namespace std;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
#define Faster ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
const int maxn=2e5+1;
const int INF=1e9;
int n=1,q,a[maxn],b[maxn],in[maxn],out[maxn],cur,v[maxn];
string s[maxn];
vector<int> adj[maxn];
struct trie
{
    struct node
    {
        node* child[2];
        node()
        {
            child[1]=child[0]=NULL;
        }
    };
    node* root;
    trie()
    {
        root=new node();
    }
    void add(int x)
    {
        node* cur=root;
        for(int i=30;i>=0;i--)
        {
            int c=(x>>i)&1;
            if(cur->child[c]==NULL) cur->child[c]=new node();
            cur=cur->child[c];
        }
    }
    int get(int x)
    {
        int ans=0;
        node* cur=root;
        for(int i=30;i>=0;i--)
        {
            int c=(x>>i)&1;
            if(cur->child[1^c]!=NULL)
            {
                ans+=(1<<i);
                cur=cur->child[1^c];
            }
            else if(cur->child[c]!=NULL) cur=cur->child[c];
            else return 0;
        }
        return ans;
    }
};
struct segtree
{
    trie ST[4*maxn];
    void update(int id,int cl,int cr,int pos,int val)
    {
        if(cl>pos||cr<pos) return;
        ST[id].add(val);
        if(cl==cr) return;
        int mid=(cl+cr)/2;
        if(pos<=mid) update(2*id,cl,mid,pos,val);
        else update(2*id+1,mid+1,cr,pos,val);
    }
    int get(int id,int cl,int cr,int l,int r,int val)
    {
        if(cl>r||cr<l) return 0;
        if(cl>=l&&cr<=r) return ST[id].get(val);
        int mid=(cl+cr)/2;
        return max(get(2*id,cl,mid,l,r,val),get(2*id+1,mid+1,cr,l,r,val));
    }
}f;
void dfs(int x,int par)
{
    in[x]=++cur;
    v[x]=v[par]^v[x];
    for(int y:adj[x])
    {
        dfs(y,x);
    }
    out[x]=cur;
}
signed main()
{
    if (fopen(taskname".INP","r"))
    {
        freopen(taskname".INP","r",stdin);
        freopen(taskname".OUT","w",stdout);
    }
    Faster
    cin>>q;
    for(int i=1;i<=q;i++)
    {
        cin>>s[i]>>a[i]>>b[i];
        if(s[i]=="Add")
        {
            adj[a[i]].push_back(++n);
            v[n]=b[i];
        }
    }
    dfs(1,0);
    int cc=1;
    f.update(1,1,n,1,0);
    for(int i=1;i<=q;i++)
    {
        if(s[i]=="Add")
        {
            ++cc;
            f.update(1,1,n,in[cc],v[cc]);
        }
        else
        {
            cout<<f.get(1,1,n,in[b[i]],out[b[i]],v[a[i]])<<"\n";
        }
    }
//    for(int i=1;i<=n;i++) cout<<v[i]<<" ";

}

Compilation message

klasika.cpp: In function 'int main()':
klasika.cpp:97:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |         freopen(taskname".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
klasika.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         freopen(taskname".OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 48472 KB Output is correct
2 Correct 25 ms 48732 KB Output is correct
3 Correct 26 ms 48864 KB Output is correct
4 Correct 25 ms 49236 KB Output is correct
5 Correct 25 ms 48412 KB Output is correct
6 Correct 33 ms 48720 KB Output is correct
7 Correct 29 ms 48988 KB Output is correct
8 Correct 25 ms 49244 KB Output is correct
9 Correct 25 ms 48264 KB Output is correct
10 Correct 27 ms 48732 KB Output is correct
11 Correct 25 ms 48932 KB Output is correct
12 Correct 27 ms 49236 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 48472 KB Output is correct
2 Correct 25 ms 48732 KB Output is correct
3 Correct 26 ms 48864 KB Output is correct
4 Correct 25 ms 49236 KB Output is correct
5 Correct 25 ms 48412 KB Output is correct
6 Correct 33 ms 48720 KB Output is correct
7 Correct 29 ms 48988 KB Output is correct
8 Correct 25 ms 49244 KB Output is correct
9 Correct 25 ms 48264 KB Output is correct
10 Correct 27 ms 48732 KB Output is correct
11 Correct 25 ms 48932 KB Output is correct
12 Correct 27 ms 49236 KB Output is correct
13 Correct 29 ms 51548 KB Output is correct
14 Correct 32 ms 55376 KB Output is correct
15 Correct 37 ms 59736 KB Output is correct
16 Correct 39 ms 63568 KB Output is correct
17 Correct 29 ms 51444 KB Output is correct
18 Correct 32 ms 55388 KB Output is correct
19 Correct 35 ms 59480 KB Output is correct
20 Correct 44 ms 63348 KB Output is correct
21 Correct 30 ms 51544 KB Output is correct
22 Correct 33 ms 55376 KB Output is correct
23 Correct 36 ms 59480 KB Output is correct
24 Correct 39 ms 63204 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 696 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 48472 KB Output is correct
2 Correct 25 ms 48732 KB Output is correct
3 Correct 26 ms 48864 KB Output is correct
4 Correct 25 ms 49236 KB Output is correct
5 Correct 25 ms 48412 KB Output is correct
6 Correct 33 ms 48720 KB Output is correct
7 Correct 29 ms 48988 KB Output is correct
8 Correct 25 ms 49244 KB Output is correct
9 Correct 25 ms 48264 KB Output is correct
10 Correct 27 ms 48732 KB Output is correct
11 Correct 25 ms 48932 KB Output is correct
12 Correct 27 ms 49236 KB Output is correct
13 Correct 29 ms 51548 KB Output is correct
14 Correct 32 ms 55376 KB Output is correct
15 Correct 37 ms 59736 KB Output is correct
16 Correct 39 ms 63568 KB Output is correct
17 Correct 29 ms 51444 KB Output is correct
18 Correct 32 ms 55388 KB Output is correct
19 Correct 35 ms 59480 KB Output is correct
20 Correct 44 ms 63348 KB Output is correct
21 Correct 30 ms 51544 KB Output is correct
22 Correct 33 ms 55376 KB Output is correct
23 Correct 36 ms 59480 KB Output is correct
24 Correct 39 ms 63204 KB Output is correct
25 Runtime error 696 ms 524288 KB Execution killed with signal 9
26 Halted 0 ms 0 KB -