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Submission #336485

# Submission time Handle Problem Language Result Execution time Memory
336485 2020-12-15T12:09:17 Z parsabahrami Klasika (COCI20_klasika) C++17
33 / 110
 997 ms 524288 KB 
#include <bits/stdc++.h>
 
using namespace std;

typedef long long int ll;
typedef pair<int, int> pii;
 
#define SZ(x)                       (int) x.size()
#define F                           first
#define S                           second
#define lc                          id << 1
#define rc                          lc | 1

const int N = 2e5 + 10;
struct Node {
    int ptr; vector<int> trie[2];

    void add(ll x) {
    	int v = 0;
    	for (int i = 30; i >= 0; i--) {
    		int b = bool(x & (1 << i));
      		if (!trie[b][v]) trie[b][v] = ptr++;
    		v = trie[b][v];
        }
    }
 
    ll get(ll x) {
    	if (ptr == 1) return 0;
    	int v = 0; ll res = 0;
    	for (int i = 30; i >= 0; i--) {
    		int b = bool(x & (1 << i));
    		if (trie[!b][v]) v = trie[!b][v], res += 1 << i;
    		else v = trie[b][v];
    	}
    	return res;
    }
};
int type[N], X[N], Y[N], St[N], Ft[N], n = 1, q, tim; ll H[N];
vector<pii> adj[N]; Node seg[N << 2];

void DFS(int v, int p = -1) {
    St[v] = tim++;
    for (pii u : adj[v]) {
        if (u.F != p) {
            H[u.F] = H[v] ^ u.S;
            DFS(u.F, v);
        }
    }
    Ft[v] = tim;
}

void build(int id = 1, int l = 0, int r = tim) {
    seg[id].ptr = 1;
    seg[id].trie[0].resize((r - l + 2) * 30, 0);
    seg[id].trie[1].resize((r - l + 2) * 30, 0);
    if (r - l == 1) return;
    int mid = (l + r) >> 1;
    build(lc, l, mid);
    build(rc, mid, r);
}

void add(int pos, ll x, int id = 1, int l = 0, int r = tim) {
    seg[id].add(x);
    if (r - l == 1) return;
    int mid = (l + r) >> 1;
    if (pos < mid) add(pos, x, lc, l, mid);
    else add(pos, x, rc, mid, r);
}

ll get(int ql, int qr, ll x, int id = 1, int l = 0, int r = tim) {
    if (qr <= l || r <= ql) return 0;
    if (ql <= l && r <= qr) return seg[id].get(x);
    int mid = (l + r) >> 1;
    return max(get(ql, qr, x, lc, l, mid), get(ql, qr, x, rc, mid, r));
}

int main() {
    scanf("%d", &q);
    for (int i = 1; i <= q; i++) {
        string t;
        cin >> t >> X[i] >> Y[i];
        if (t == "Add") {
            type[i] = 0;
            adj[X[i]].push_back({++n, Y[i]});
        } else {
            type[i] = 1;
        }
    }
    DFS(1);
    build();
    add(0, 0);
    n = 1;
    for (int i = 1; i <= q; i++) {
        if (type[i]) {
            printf("%lld\n", get(St[Y[i]], Ft[Y[i]], H[X[i]]));
        } else {
            n++;
            add(St[n], H[n]);
        }
    }

    return 0;
}

Compilation message

klasika.cpp: In function 'int main()':
klasika.cpp:78:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   78 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 49004 KB Output is correct
2 Correct 34 ms 49132 KB Output is correct
3 Correct 33 ms 49260 KB Output is correct
4 Correct 33 ms 49388 KB Output is correct
5 Correct 34 ms 49004 KB Output is correct
6 Correct 33 ms 49132 KB Output is correct
7 Correct 33 ms 49260 KB Output is correct
8 Correct 34 ms 49388 KB Output is correct
9 Correct 34 ms 49004 KB Output is correct
10 Correct 34 ms 49260 KB Output is correct
11 Correct 33 ms 49260 KB Output is correct
12 Correct 33 ms 49388 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 49004 KB Output is correct
2 Correct 34 ms 49132 KB Output is correct
3 Correct 33 ms 49260 KB Output is correct
4 Correct 33 ms 49388 KB Output is correct
5 Correct 34 ms 49004 KB Output is correct
6 Correct 33 ms 49132 KB Output is correct
7 Correct 33 ms 49260 KB Output is correct
8 Correct 34 ms 49388 KB Output is correct
9 Correct 34 ms 49004 KB Output is correct
10 Correct 34 ms 49260 KB Output is correct
11 Correct 33 ms 49260 KB Output is correct
12 Correct 33 ms 49388 KB Output is correct
13 Correct 38 ms 50284 KB Output is correct
14 Correct 41 ms 51820 KB Output is correct
15 Correct 44 ms 53564 KB Output is correct
16 Correct 44 ms 55020 KB Output is correct
17 Correct 37 ms 50304 KB Output is correct
18 Correct 40 ms 51692 KB Output is correct
19 Correct 42 ms 53356 KB Output is correct
20 Correct 44 ms 54892 KB Output is correct
21 Correct 39 ms 50284 KB Output is correct
22 Correct 39 ms 51820 KB Output is correct
23 Correct 41 ms 53356 KB Output is correct
24 Correct 44 ms 54892 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 616 ms 249392 KB Output is correct
2 Correct 997 ms 466492 KB Output is correct
3 Runtime error 519 ms 524288 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 49004 KB Output is correct
2 Correct 34 ms 49132 KB Output is correct
3 Correct 33 ms 49260 KB Output is correct
4 Correct 33 ms 49388 KB Output is correct
5 Correct 34 ms 49004 KB Output is correct
6 Correct 33 ms 49132 KB Output is correct
7 Correct 33 ms 49260 KB Output is correct
8 Correct 34 ms 49388 KB Output is correct
9 Correct 34 ms 49004 KB Output is correct
10 Correct 34 ms 49260 KB Output is correct
11 Correct 33 ms 49260 KB Output is correct
12 Correct 33 ms 49388 KB Output is correct
13 Correct 38 ms 50284 KB Output is correct
14 Correct 41 ms 51820 KB Output is correct
15 Correct 44 ms 53564 KB Output is correct
16 Correct 44 ms 55020 KB Output is correct
17 Correct 37 ms 50304 KB Output is correct
18 Correct 40 ms 51692 KB Output is correct
19 Correct 42 ms 53356 KB Output is correct
20 Correct 44 ms 54892 KB Output is correct
21 Correct 39 ms 50284 KB Output is correct
22 Correct 39 ms 51820 KB Output is correct
23 Correct 41 ms 53356 KB Output is correct
24 Correct 44 ms 54892 KB Output is correct
25 Correct 616 ms 249392 KB Output is correct
26 Correct 997 ms 466492 KB Output is correct
27 Runtime error 519 ms 524288 KB Execution killed with signal 9 (could be triggered by violating memory limits)
28 Halted 0 ms 0 KB -