oj.uz

Submission #336413

# Submission time Handle Problem Language Result Execution time Memory
336413 2020-12-15T08:49:12 Z AriaH Klasika (COCI20_klasika) C++11
33 / 110
 1150 ms 219524 KB 
/** I can do this all day **/

#pragma GCC optimize("O2")
#include <bits/stdc++.h>
using namespace std;

typedef long long                   ll;
typedef long double                 ld;
typedef pair<int,int>               pii;
typedef pair<ll,ll>                 pll;
#define all(x)                      (x).begin(),(x).end()
#define F                           first
#define S                           second
#define Mp                          make_pair
#define fast_io                     ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io                     freopen("in.txt" , "r+" , stdin) ; freopen("out.txt" , "w+" , stdout);
#define endl                        "\n"

const ll N = 2e5 + 10;
const ll M = 16 * N;
const ll mod = 1e9 + 7;
const ll mod2 = 998244353;
const ll inf = 8e18;
const int LOG = 30;

ll q, n = 1, ptr, Cnt = 1, w[N], St[N], Fi[N], child[N][2];

set < ll > st[M];

vector < ll > G[N];

pair < string, pll > Q[N];

void dfs(int v)
{
    St[v] = ++ptr;
    for(auto u : G[v])
    {
	dfs(u);
    }
    Fi[v] = ptr;
}

/// add trie -> x = w ash ta root, v = starting time rasi ke mikhai add bokoni

inline void add_trie(ll x, ll y)
{
    ll node = 1;
    for(ll T = 30; ~T; T --)
    {
	ll rem = ((x & (1ll << T)) != 0);
	if(child[node][rem] == 0) /// set nashode
	{
	    child[node][rem] = ++Cnt;
	}
	node = child[node][rem];
	st[node].insert(y);
    }
}

/// check v, node -> aya toye set trie v rasi hast ke toye sub node bashe ya na
/*
inline bool check(int v, int node)
{
    auto it = st[v].lower_bound(St[node]);
    if(it == st[v].end() || *it > Fi[node]) return 0;
    return 1;
}
*/
/// ask trie x, b -> maximum xor ke adadmoon = x, va toye sub v bashe

inline ll ask_trie(ll x, ll b)
{
    ll tl = St[b], tr = Fi[b];
    ll node = 1, tot = 0;
    for(ll T = 30; ~T; T --)
    {
	ll rem = ((x & (1ll << T)) != 0), other = child[node][1 - rem], is_Ok = 1;
	if(other == 0) is_Ok = 0;
	auto it = st[other].lower_bound(tl);
	if(it == st[other].end() || *it > tr) is_Ok = 0;
	if(is_Ok)
	{
	    tot += (1ll << T);
	    node = other;
	}
	else
	{
	    node = child[node][rem];
	}
    }
    return tot;
}

int main()
{
    cin >> q;
    for(int i = 1; i <= q; i ++)
    {
	string s;
	ll a, b;
	cin >> s >> a >> b;
	Q[i] = Mp(s, Mp(a, b));
	if(s == "Add")
	{
	    n ++;
	    w[n] = w[a] ^ b;
	    G[a].push_back(n);
	    Q[i].S.F = n;
	}
    }
    dfs(1);
    for(int i = 1; i <= n ;i ++)
    {
	///cout << St[i] << " " << Fi[i] << " " << w[i] << endl;
    }
    add_trie(0, St[1]);
    for(int i = 1; i <= q; i ++)
    {
	if(Q[i].F == "Add")
	{
	    add_trie(w[Q[i].S.F], St[Q[i].S.F]);
	}
	else
	{
	    cout << ask_trie(w[Q[i].S.F], Q[i].S.S) << endl;
	}
    }
    return 0;
}
/*!
        stay away from negative people they have a problem for every solution !
*/
/*
4
Add 1 5
Query 1 1
Add 1 7
Query 1 1 
*/

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 164844 KB Output is correct
2 Correct 107 ms 164844 KB Output is correct
3 Correct 107 ms 164972 KB Output is correct
4 Correct 108 ms 164972 KB Output is correct
5 Correct 109 ms 164844 KB Output is correct
6 Correct 106 ms 164864 KB Output is correct
7 Correct 108 ms 164972 KB Output is correct
8 Correct 108 ms 164972 KB Output is correct
9 Correct 108 ms 164844 KB Output is correct
10 Correct 106 ms 164844 KB Output is correct
11 Correct 110 ms 164972 KB Output is correct
12 Correct 108 ms 165100 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 164844 KB Output is correct
2 Correct 107 ms 164844 KB Output is correct
3 Correct 107 ms 164972 KB Output is correct
4 Correct 108 ms 164972 KB Output is correct
5 Correct 109 ms 164844 KB Output is correct
6 Correct 106 ms 164864 KB Output is correct
7 Correct 108 ms 164972 KB Output is correct
8 Correct 108 ms 164972 KB Output is correct
9 Correct 108 ms 164844 KB Output is correct
10 Correct 106 ms 164844 KB Output is correct
11 Correct 110 ms 164972 KB Output is correct
12 Correct 108 ms 165100 KB Output is correct
13 Correct 112 ms 165484 KB Output is correct
14 Correct 113 ms 166252 KB Output is correct
15 Correct 114 ms 167020 KB Output is correct
16 Correct 116 ms 167788 KB Output is correct
17 Correct 113 ms 165560 KB Output is correct
18 Correct 114 ms 166252 KB Output is correct
19 Correct 115 ms 167020 KB Output is correct
20 Correct 116 ms 167936 KB Output is correct
21 Correct 111 ms 165484 KB Output is correct
22 Correct 114 ms 166252 KB Output is correct
23 Correct 114 ms 167020 KB Output is correct
24 Correct 115 ms 167660 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 1150 ms 219524 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 164844 KB Output is correct
2 Correct 107 ms 164844 KB Output is correct
3 Correct 107 ms 164972 KB Output is correct
4 Correct 108 ms 164972 KB Output is correct
5 Correct 109 ms 164844 KB Output is correct
6 Correct 106 ms 164864 KB Output is correct
7 Correct 108 ms 164972 KB Output is correct
8 Correct 108 ms 164972 KB Output is correct
9 Correct 108 ms 164844 KB Output is correct
10 Correct 106 ms 164844 KB Output is correct
11 Correct 110 ms 164972 KB Output is correct
12 Correct 108 ms 165100 KB Output is correct
13 Correct 112 ms 165484 KB Output is correct
14 Correct 113 ms 166252 KB Output is correct
15 Correct 114 ms 167020 KB Output is correct
16 Correct 116 ms 167788 KB Output is correct
17 Correct 113 ms 165560 KB Output is correct
18 Correct 114 ms 166252 KB Output is correct
19 Correct 115 ms 167020 KB Output is correct
20 Correct 116 ms 167936 KB Output is correct
21 Correct 111 ms 165484 KB Output is correct
22 Correct 114 ms 166252 KB Output is correct
23 Correct 114 ms 167020 KB Output is correct
24 Correct 115 ms 167660 KB Output is correct
25 Incorrect 1150 ms 219524 KB Output isn't correct
26 Halted 0 ms 0 KB -