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Submission #520154

# Submission time Handle Problem Language Result Execution time Memory
520154 2022-01-28T14:50:34 Z HaYoungJoon Klasika (COCI20_klasika) C++14
110 / 110
 2645 ms 459044 KB 
#include <bits/stdc++.h>

using namespace std;

typedef pair<int,int> pii;
typedef pair<int,pii> piii;
const int maxn = 2*1e5 + 1;
int tin[maxn], tout[maxn], trie[31*maxn][2];
int dis[maxn],Trietimer = 0, DFStimer = 0;
vector<set<int> > StoreTin;
vector<pii> adj[maxn];
vector<piii> query;

void DFS(int u) {
    tin[u] = ++DFStimer;
    for (pii i: adj[u]) {
        int v = i.first, w = i.second;
        dis[v] = dis[u] ^ w;
        DFS(v);
    }
    tout[u] = DFStimer;
}

void addNum(int u) {
    int cur = 0;
    set<int> st;
    for (int i = 30; i >= 0; i--) {
        int val = (dis[u] & (1 << i)) > 0;
        if (!trie[cur][val]) {
            trie[cur][val] = ++Trietimer;
            StoreTin.push_back(st);
        }
        StoreTin[trie[cur][val]].insert(tin[u]);
        cur = trie[cur][val];
    }
}

int findNum(int u, int toXor) {
    int cur = 0;
    for (int i = 30; i >= 0; i--) {
        int val = (toXor & (1 << i)) > 0;
        bool check;
        if (!trie[cur][val^1]) check = 0;
        else {
            auto l = StoreTin[trie[cur][val ^ 1]].lower_bound(tin[u]);
            if (l != StoreTin[trie[cur][val ^ 1]].end() && *l <= tout[u]) check = 1;
            else check = 0;
        }
        if (check) {
            toXor |= (1 << i);
            cur = trie[cur][val ^ 1];
        } else {
            if (val) toXor ^= (1 << i);
            cur = trie[cur][val];
        }
    }
    return toXor;
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    int Q,x,y;
    cin >> Q;
    string type;
    int cnt = 1;
    for (int i = 1; i <= Q; i++) {
        cin >> type >> x >> y;
        if (type[0] == 'A') {
            adj[x].emplace_back(pii(++cnt,y));
            query.emplace_back(piii(0,pii(cnt,y)));
        } else query.emplace_back(piii(1,pii(x,y)));
    }
    set<int> st;
    StoreTin.push_back(st);
    DFS(1);
    addNum(1);
    for (int i = 0; i < query.size(); i++) {
        if (query[i].first == 0) {
            addNum(query[i].second.first);
        } else {
            int res = findNum(query[i].second.second,dis[query[i].second.first]);
            cout << res << '\n';
        }
    }
    return 0;
}

Compilation message

klasika.cpp: In function 'int main()':
klasika.cpp:78:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |     for (int i = 0; i < query.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5196 KB Output is correct
2 Correct 3 ms 5196 KB Output is correct
3 Correct 3 ms 5324 KB Output is correct
4 Correct 3 ms 5452 KB Output is correct
5 Correct 3 ms 5068 KB Output is correct
6 Correct 3 ms 5196 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5452 KB Output is correct
9 Correct 3 ms 5196 KB Output is correct
10 Correct 3 ms 5296 KB Output is correct
11 Correct 3 ms 5324 KB Output is correct
12 Correct 3 ms 5452 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5196 KB Output is correct
2 Correct 3 ms 5196 KB Output is correct
3 Correct 3 ms 5324 KB Output is correct
4 Correct 3 ms 5452 KB Output is correct
5 Correct 3 ms 5068 KB Output is correct
6 Correct 3 ms 5196 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5452 KB Output is correct
9 Correct 3 ms 5196 KB Output is correct
10 Correct 3 ms 5296 KB Output is correct
11 Correct 3 ms 5324 KB Output is correct
12 Correct 3 ms 5452 KB Output is correct
13 Correct 5 ms 6408 KB Output is correct
14 Correct 7 ms 7812 KB Output is correct
15 Correct 8 ms 8320 KB Output is correct
16 Correct 11 ms 10880 KB Output is correct
17 Correct 5 ms 6408 KB Output is correct
18 Correct 8 ms 7812 KB Output is correct
19 Correct 9 ms 8192 KB Output is correct
20 Correct 10 ms 9216 KB Output is correct
21 Correct 6 ms 6408 KB Output is correct
22 Correct 8 ms 7812 KB Output is correct
23 Correct 8 ms 8192 KB Output is correct
24 Correct 11 ms 9216 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 681 ms 113028 KB Output is correct
2 Correct 1200 ms 224184 KB Output is correct
3 Correct 1663 ms 286192 KB Output is correct
4 Correct 2250 ms 458740 KB Output is correct
5 Correct 705 ms 113644 KB Output is correct
6 Correct 1297 ms 222540 KB Output is correct
7 Correct 1806 ms 283180 KB Output is correct
8 Correct 2504 ms 449176 KB Output is correct
9 Correct 666 ms 113900 KB Output is correct
10 Correct 1203 ms 223256 KB Output is correct
11 Correct 1706 ms 285748 KB Output is correct
12 Correct 2239 ms 450932 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5196 KB Output is correct
2 Correct 3 ms 5196 KB Output is correct
3 Correct 3 ms 5324 KB Output is correct
4 Correct 3 ms 5452 KB Output is correct
5 Correct 3 ms 5068 KB Output is correct
6 Correct 3 ms 5196 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5452 KB Output is correct
9 Correct 3 ms 5196 KB Output is correct
10 Correct 3 ms 5296 KB Output is correct
11 Correct 3 ms 5324 KB Output is correct
12 Correct 3 ms 5452 KB Output is correct
13 Correct 5 ms 6408 KB Output is correct
14 Correct 7 ms 7812 KB Output is correct
15 Correct 8 ms 8320 KB Output is correct
16 Correct 11 ms 10880 KB Output is correct
17 Correct 5 ms 6408 KB Output is correct
18 Correct 8 ms 7812 KB Output is correct
19 Correct 9 ms 8192 KB Output is correct
20 Correct 10 ms 9216 KB Output is correct
21 Correct 6 ms 6408 KB Output is correct
22 Correct 8 ms 7812 KB Output is correct
23 Correct 8 ms 8192 KB Output is correct
24 Correct 11 ms 9216 KB Output is correct
25 Correct 681 ms 113028 KB Output is correct
26 Correct 1200 ms 224184 KB Output is correct
27 Correct 1663 ms 286192 KB Output is correct
28 Correct 2250 ms 458740 KB Output is correct
29 Correct 705 ms 113644 KB Output is correct
30 Correct 1297 ms 222540 KB Output is correct
31 Correct 1806 ms 283180 KB Output is correct
32 Correct 2504 ms 449176 KB Output is correct
33 Correct 666 ms 113900 KB Output is correct
34 Correct 1203 ms 223256 KB Output is correct
35 Correct 1706 ms 285748 KB Output is correct
36 Correct 2239 ms 450932 KB Output is correct
37 Correct 1154 ms 116596 KB Output is correct
38 Correct 1714 ms 227636 KB Output is correct
39 Correct 2098 ms 292156 KB Output is correct
40 Correct 2447 ms 459044 KB Output is correct
41 Correct 1279 ms 114004 KB Output is correct
42 Correct 1821 ms 222724 KB Output is correct
43 Correct 2247 ms 283424 KB Output is correct
44 Correct 2645 ms 449512 KB Output is correct
45 Correct 1307 ms 114372 KB Output is correct
46 Correct 1881 ms 223592 KB Output is correct
47 Correct 2306 ms 284420 KB Output is correct
48 Correct 2597 ms 451128 KB Output is correct