Submission #199870

#	Time	Username	Problem	Language	Result	Execution time	Memory
199870		mdn2002	Klasika (COCI20_klasika)	C++14	33 / 110	912 ms	99412 KiB

klasika

#include<bits/stdc++.h>
using namespace std;
const int mod=1e9+7;
long long n,a[200005],k,trie[6000006][4],tim[9000006][4],ans;
int en[200005],ot[200005],tmm;
vector<int>gr[200005],aq,bq;
vector<string>sq;
void dfs(int x,int p)
{
    en[x]=++tmm;
    for(int i=0;i<gr[x].size();i++)
    {
        int u=gr[x][i];
        if(u==p)continue;
        dfs(u,x);
    }
    ot[x]=tmm;
}
string to(long long x)
{
    string s;
    while(x)
    {
        s.push_back('0'+(x%2));
        x/=2;
    }
    while(s.size()!=32)s.push_back('0');
    reverse(s.begin(),s.end());
    return s;
}
void ad(string s)
{
    int nod=0;
    for(int i=0;i<s.size();i++)
    {
        int x=s[i]-'0';
        if(trie[nod][x]==0)trie[nod][x]=++k;
        nod=trie[nod][x];
    }
}
void qu(string s,int z,int x)
{
    if(s[z]=='1')
    {
        if(trie[x][0]!=0)
        {
            ans*=2;
            ans++;
            qu(s,z+1,trie[x][0]);
        }
        else if(trie[x][1]!=0)
        {
            ans*=2;
            qu(s,z+1,trie[x][1]);
        }
    }
    else
    {
        if(trie[x][1]!=0)
        {
            ans*=2;
            ans++;
            qu(s,z+1,trie[x][1]);
        }
        else if(trie[x][0]!=0)
        {
            ans*=2;
            qu(s,z+1,trie[x][0]);
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen("gpsduel.in","r",stdin);
    //freopen("gpsduel.out","w",stdout);
    cin>>n;
    int num=1;
    for(int i=0;i<n;i++)
    {
        string s;
        long long x,y;
        cin>>s>>x>>y;
        sq.push_back(s);
        aq.push_back(x);
        bq.push_back(y);
        if(s=="Add")
        {
            num++;
            gr[x].push_back(num);
        }
    }
    dfs(1,0);
    num=1;
    for(int i=0;i<n;i++)
    {
        string s=sq[i];
        long long x=aq[i],y=bq[i];
        if(s=="Add")
        {
            num++;
            a[num]=a[x]^y;
            string st=to(a[num]);
            ad(st);
        }
        else
        {
            ans=0;
            long long b=a[x];
            qu(to(b),0,0);
            cout<<max(b,ans)<<endl;
        }
    }
}

Compilation message (stderr)

klasika.cpp: In function 'void dfs(int, int)':
klasika.cpp:11:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<gr[x].size();i++)
                 ~^~~~~~~~~~~~~
klasika.cpp: In function 'void ad(std::__cxx11::string)':
klasika.cpp:34:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<s.size();i++)
                 ~^~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 22
• Subtask 3: 33 / 33
• Subtask 4: 0 / 44