oj.uz

Submission #223305

# Submission time Handle Problem Language Result Execution time Memory
223305 2020-04-15T07:01:34 Z tqbfjotld Klasika (COCI20_klasika) C++14
110 / 110
 3704 ms 182688 KB 
#include <bits/stdc++.h>
using namespace std;

struct node{
int s,e;
set<int> v;
node *l,*r;
node(int _s, int _e){
    s = _s;
    e = _e;
    if (s!=e){
        l = new node(s,(s+e)/2);
        r = new node((s+e)/2+1,e);
    }
}
void addVal(int pos, int val){
    v.insert(val);
    if (s==e) return;
    if (pos>(s+e)/2){
        r->addVal(pos,val);
    }
    else{
        l->addVal(pos,val);
    }
}
int query(int a, int b, int val){
    if (a<=s && e<=b){
        if (v.empty()) return -1;
        int lb = 0;
        for (int x = 30; x>=0; x--){
            int bitmask = ((1<<30)-1+(1<<30)-((1<<(x+1))-1));
            int pref = (lb&bitmask);
            if ((val&(1<<x))==0){
                auto it = v.lower_bound(pref+(1<<x));
                if (it==v.end()){
                    continue;
                }
                int res = *(it);
                if ((res&(1<<x))!=0 && (pref==(res&bitmask))){
                    lb += (1<<x);
                }
            }
            else{
                auto it = v.lower_bound(pref);
                if (it==v.end()){
                    return 1/0;
                }
                int res = *(it);
                if ((res&(1<<x))!=0){
                    lb += (1<<x);
                }
            }
        }
/*
        printf("node %d to %d: ",s,e);
        for (auto x : v){
            printf("%d ",x);
        }
        printf("\n");
        printf("chose %d for val %d\n",lb,val);
*/
        return lb^val;
    }
    else if (b<=(s+e)/2){
        return l->query(a,b,val);
    }
    else if (a>(s+e)/2){
        return r->query(a,b,val);
    }
    else{
        return max(l->query(a,b,val),r->query(a,b,val));
    }
}
}*root;

int order[200005];
int subtree[200005];///subtree size
int dist[200005];///length of path to root
vector<pair<bool,pair<int,int> > > queries; ///offline lol
vector<pair<int,int> > adjl[200005];
int q;
int n = 1;
int cur = 1;

int dfs(int node){
    order[node] = cur;
    cur++;
    subtree[node] = 1;
    for (auto x : adjl[node]){
        dist[x.first] = dist[node]^x.second;
        subtree[node] += dfs(x.first);
    }
    return subtree[node];
}

int main(){
    cin>>q;
    for (int x = 0; x<q; x++){
        string str;
        cin>>str;
        int a,b;
        cin>>a;
        cin>>b;
        if (str=="Add"){
            n++;
            queries.push_back({true,{n,b}});
            adjl[a].push_back({n,b});
        }
        else{
            queries.push_back({false,{a,b}});
        }
    }
    root = new node(1,n);
    dfs(1);/*
    for (int x = 1; x<=n; x++){
        printf("%d ",dist[x]);
    }
    printf("\n");*/
    root->addVal(1,0);
    for (auto x : queries){
        if (x.first){
            //printf("adding %d %d\n",order[x.second.first],dist[x.second.first]);
            root->addVal(order[x.second.first],dist[x.second.first]);
        }
        else{
            int xr = dist[x.second.first];
            printf("%d\n",root->query(order[x.second.second],order[x.second.second]+subtree[x.second.second]-1,xr));
        }
    }
}
/*
10
Add 1 4
Add 1 0
Add 3 1

Add 3 2
Add 3 3
Add 3 4
Query 2 3
Add 3 7
Add 3 9
Query 4 1
*/

Compilation message

klasika.cpp: In member function 'int node::query(int, int, int)':
klasika.cpp:46:29: warning: division by zero [-Wdiv-by-zero]
                     return 1/0;
                            ~^~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 4992 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 8 ms 5120 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 9 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 8 ms 5120 KB Output is correct
9 Correct 8 ms 4992 KB Output is correct
10 Correct 8 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 9 ms 5120 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 4992 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 8 ms 5120 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 9 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 8 ms 5120 KB Output is correct
9 Correct 8 ms 4992 KB Output is correct
10 Correct 8 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 9 ms 5120 KB Output is correct
13 Correct 17 ms 5376 KB Output is correct
14 Correct 17 ms 5632 KB Output is correct
15 Correct 22 ms 6016 KB Output is correct
16 Correct 17 ms 6400 KB Output is correct
17 Correct 12 ms 5376 KB Output is correct
18 Correct 13 ms 5632 KB Output is correct
19 Correct 14 ms 5888 KB Output is correct
20 Correct 14 ms 6272 KB Output is correct
21 Correct 14 ms 5376 KB Output is correct
22 Correct 15 ms 5632 KB Output is correct
23 Correct 15 ms 5888 KB Output is correct
24 Correct 14 ms 6272 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 937 ms 49044 KB Output is correct
2 Correct 1215 ms 92440 KB Output is correct
3 Correct 1434 ms 136460 KB Output is correct
4 Correct 1463 ms 182560 KB Output is correct
5 Correct 1120 ms 47364 KB Output is correct
6 Correct 1625 ms 89508 KB Output is correct
7 Correct 2106 ms 131540 KB Output is correct
8 Correct 2672 ms 175756 KB Output is correct
9 Correct 1070 ms 47236 KB Output is correct
10 Correct 1409 ms 89828 KB Output is correct
11 Correct 1621 ms 133004 KB Output is correct
12 Correct 1812 ms 177180 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 4992 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 8 ms 5120 KB Output is correct
4 Correct 8 ms 5120 KB Output is correct
5 Correct 9 ms 5120 KB Output is correct
6 Correct 8 ms 5120 KB Output is correct
7 Correct 8 ms 5120 KB Output is correct
8 Correct 8 ms 5120 KB Output is correct
9 Correct 8 ms 4992 KB Output is correct
10 Correct 8 ms 5120 KB Output is correct
11 Correct 8 ms 5120 KB Output is correct
12 Correct 9 ms 5120 KB Output is correct
13 Correct 17 ms 5376 KB Output is correct
14 Correct 17 ms 5632 KB Output is correct
15 Correct 22 ms 6016 KB Output is correct
16 Correct 17 ms 6400 KB Output is correct
17 Correct 12 ms 5376 KB Output is correct
18 Correct 13 ms 5632 KB Output is correct
19 Correct 14 ms 5888 KB Output is correct
20 Correct 14 ms 6272 KB Output is correct
21 Correct 14 ms 5376 KB Output is correct
22 Correct 15 ms 5632 KB Output is correct
23 Correct 15 ms 5888 KB Output is correct
24 Correct 14 ms 6272 KB Output is correct
25 Correct 937 ms 49044 KB Output is correct
26 Correct 1215 ms 92440 KB Output is correct
27 Correct 1434 ms 136460 KB Output is correct
28 Correct 1463 ms 182560 KB Output is correct
29 Correct 1120 ms 47364 KB Output is correct
30 Correct 1625 ms 89508 KB Output is correct
31 Correct 2106 ms 131540 KB Output is correct
32 Correct 2672 ms 175756 KB Output is correct
33 Correct 1070 ms 47236 KB Output is correct
34 Correct 1409 ms 89828 KB Output is correct
35 Correct 1621 ms 133004 KB Output is correct
36 Correct 1812 ms 177180 KB Output is correct
37 Correct 3667 ms 49484 KB Output is correct
38 Correct 3704 ms 92620 KB Output is correct
39 Correct 3399 ms 137476 KB Output is correct
40 Correct 2647 ms 182688 KB Output is correct
41 Correct 932 ms 47376 KB Output is correct
42 Correct 1409 ms 89032 KB Output is correct
43 Correct 1910 ms 131384 KB Output is correct
44 Correct 2523 ms 175536 KB Output is correct
45 Correct 1781 ms 47264 KB Output is correct
46 Correct 2192 ms 89772 KB Output is correct
47 Correct 2235 ms 133016 KB Output is correct
48 Correct 2053 ms 178180 KB Output is correct