Submission #513512

#	Time	Username	Problem	Language	Result	Execution time	Memory
513512		Killer2501	Klasika (COCI20_klasika)	C++14	110 / 110	2940 ms	483148 KiB

klasika

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define pb push_back
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fi first
#define se second
using namespace std;
const int N = 3e5+5;
const int M = (1<<17);
const ll inf = 1e15;
const ll mod = 1e15+7;
int n, t, k, m, d[N], in[N], out[N];
int ans, tong, a[N], b[N];
string s[N];
struct node
{
    int x[2];
    set<int> vi;
    node(){}
    node( int _x, int _y)
    {
        x[0] = _x;
        x[1] = _y;
    }

};
vector<node> q;
vector<int>  adj[N], kq;
void add(int x, int y)
{
    for(int i = 0, j = 30; j >= 0; j --)
    {
        int t = (x >> j & 1);
        if(q[i].x[t] == 0)
        {
            q[i].x[t] = q.size();
            q.pb(node(0, 0));
        }
        i = q[i].x[t];
        q[i].vi.insert(y);
    }
}
int get(int x, int l, int r)
{
    int total = 0;
    for(int i = 0, j = 30; j >= 0; j --)
    {
        int t = (x >> j & 1);
        int nxt = q[i].x[t^1];
        auto it = q[nxt].vi.lower_bound(l);
        if(it != q[nxt].vi.end() && (*it) <= r)
        {
            i = nxt;
            total += (1<<j);
        }
        else i = q[i].x[t];
    }
    return total;
}
void dfs(int u)
{
    in[u] = ++k;
    for(int v: adj[u])dfs(v);
    out[u] = k;
}
void sol()
{
    cin >> m;
    n = 1;
    for(int i = 1; i <= m; i ++)
    {
        cin >> s[i] >> a[i] >> b[i];
        if(s[i] == "Add")
        {
            ++n;
            adj[a[i]].pb(n);
            d[n] = d[a[i]] ^ b[i];
            a[i] = n;
        }
    }
    dfs(1);
    q.pb(node(0, 0));
    add(d[1], in[1]);
    for(int i = 1; i <= m; i ++)
    {
        if(s[i] == "Add")
        {
            add(d[a[i]], in[a[i]]);
        }
        else cout << get(d[a[i]], in[b[i]], out[b[i]]) << '\n';
    }
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    #define task "test"
    if(fopen(task".inp", "r"))
	{
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
    }
    int ntest = 1;
    //cin >> ntest;
    while(ntest -- > 0)
    sol();
}

Compilation message (stderr)

klasika.cpp: In function 'int main()':
klasika.cpp:104:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |   freopen(task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
klasika.cpp:105:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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