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Submission #336446

# Submission time Handle Problem Language Result Execution time Memory
336446 2020-12-15T10:47:38 Z ewwdsgfvsd Klasika (COCI20_klasika) C++17
33 / 110
 865 ms 524292 KB 
#include <bits/stdc++.h>
//#pragma GCC optimize("Ofast")
/*#pragma GCC optimize("O2")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,sse,sse2,fma")*/
using namespace std;
using ll = /*long long*/ int;
#define F first
#define S second
#define pb push_back
#define fast_io ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
const int N=2e5+10,LN=31,SQ=200;
const ll INF=1e18;
const int MOD=1000000007 /*998244353*/;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using pll=pair<ll,ll>;
using pii=pair<int,int>;
#define ordered_set tree<pair<pll,ll>, null_type,less<pair<pll,ll>>, rb_tree_tag,tree_order_statistics_node_update>
ll pow(ll x, ll y, ll mod){
    ll ans=1;
    while (y != 0) {
        if (y & 1) ans = ans * x % mod;
        y >>= 1;
        x = x * x % mod;
    }
    return ans;
}
struct tr{
    vector<ll> nx[2];
    ll k;
    void add(ll x) {
        ll v = 0;
        for (ll i=LN-1;i>=0;i--) {
            ll y=bool(x&(1<<i));
            if(!nx[y][v]) nx[y][v] = k++;
            v = nx[y][v];
        }
    }
    ll get(ll x){
        ll res=0,v=0;
        if(k==1) return 0;
        for(ll i=LN-1; i>=0; i--){
            ll y=((x&(1<<i))!=0);
            y=1-y;
            if(nx[y][v]) v=nx[y][v],res+=(1<<i);
            else v=nx[1-y][v];
        }
        return res;
    }
};
tr f[4*N];
ll q,a[N],t=1,st[N],fn[N],g=2;
vector<pair<ll,pll>> qu;
vector<pll> adj[N];
void dfs(ll v){
    st[v]=t++;
    for(pll p :adj[v]) a[p.F]=a[v]^p.S,dfs(p.F);
    fn[v]=t;
}
void build(ll v, ll l, ll r) {
    f[v].k=1;
    f[v].nx[0].resize((r-l+2)*(LN-1),0);
    f[v].nx[1].resize((r-l+2)*(LN-1),0);
    if (r-l==1) return;
    ll m=(l+r)/2;
    build(v*2,l,m);
    build(v*2+1,m,r);
}
void upd(ll v, ll l, ll r, ll p, ll x){
    f[v].add(x);
    //cout << l << ' ' << r << ' ' << f[v].get(0) << '\n';
    if(r-l==1) return;
    ll m=(l+r)/2;
    if(p<m) upd(v*2,l,m,p,x);
    else upd(v*2+1,m,r,p,x);
}
ll get(ll v, ll l, ll r, ll tl, ll tr, ll x){
    if(tl>=tr) return 0;
    if(l==tl && r==tr) return f[v].get(x);
    ll m=(l+r)/2;
    return max(get(v*2,l,m,tl,min(m,tr),x),get(v*2+1,m,r,max(m,tl),tr,x));
}
int main(){
    fast_io;
    cin >> q;
    for(ll i=0; i<q; i++){
        string s;
        ll c,x,y;
        cin >> s >> x >> y;
        if(s[0]=='A') c=0;
        else c=1;
        if(c==0){
            qu.pb({c,{x,g}});
            adj[x].pb({g++,y});
        }else qu.pb({c,{x,y}});
    }
    dfs(1);
    build(1,1,t);
    upd(1,1,t,st[1],a[1]);
    for(ll i=0; i<q; i++){
        ll x=qu[i].S.F,y=qu[i].S.S;
        if(qu[i].F==0){
            //cout << i << ' ' << y << '\n';
            upd(1,1,t,st[y],a[y]);
        }else{
            //cout << (a[x]^a[y]) << '\n';
            cout << get(1,1,t,st[y],fn[y],a[x]) << '\n';
        }
    }
    //cout << st[4] << ' ' << fn[4] << ' ' << st[5] << ' ' << fn[5] << '\n';
    return 0;
}

Compilation message

klasika.cpp:13:14: warning: overflow in conversion from 'double' to 'll' {aka 'int'} changes value from '1.0e+18' to '2147483647' [-Woverflow]
   13 | const ll INF=1e18;
      |              ^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 49004 KB Output is correct
2 Correct 33 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 33 ms 49004 KB Output is correct
6 Correct 34 ms 49132 KB Output is correct
7 Correct 33 ms 49260 KB Output is correct
8 Correct 33 ms 49388 KB Output is correct
9 Correct 34 ms 49004 KB Output is correct
10 Correct 33 ms 49132 KB Output is correct
11 Correct 33 ms 49260 KB Output is correct
12 Correct 34 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 33 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 33 ms 49004 KB Output is correct
6 Correct 34 ms 49132 KB Output is correct
7 Correct 33 ms 49260 KB Output is correct
8 Correct 33 ms 49388 KB Output is correct
9 Correct 34 ms 49004 KB Output is correct
10 Correct 33 ms 49132 KB Output is correct
11 Correct 33 ms 49260 KB Output is correct
12 Correct 34 ms 49388 KB Output is correct
13 Correct 37 ms 50372 KB Output is correct
14 Correct 40 ms 51948 KB Output is correct
15 Correct 41 ms 53740 KB Output is correct
16 Correct 43 ms 55148 KB Output is correct
17 Correct 37 ms 50284 KB Output is correct
18 Correct 42 ms 51820 KB Output is correct
19 Correct 41 ms 53484 KB Output is correct
20 Correct 50 ms 55000 KB Output is correct
21 Correct 38 ms 50352 KB Output is correct
22 Correct 38 ms 51820 KB Output is correct
23 Correct 43 ms 53356 KB Output is correct
24 Correct 43 ms 54892 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 482 ms 251152 KB Output is correct
2 Correct 865 ms 467484 KB Output is correct
3 Runtime error 413 ms 524292 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 33 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 33 ms 49004 KB Output is correct
6 Correct 34 ms 49132 KB Output is correct
7 Correct 33 ms 49260 KB Output is correct
8 Correct 33 ms 49388 KB Output is correct
9 Correct 34 ms 49004 KB Output is correct
10 Correct 33 ms 49132 KB Output is correct
11 Correct 33 ms 49260 KB Output is correct
12 Correct 34 ms 49388 KB Output is correct
13 Correct 37 ms 50372 KB Output is correct
14 Correct 40 ms 51948 KB Output is correct
15 Correct 41 ms 53740 KB Output is correct
16 Correct 43 ms 55148 KB Output is correct
17 Correct 37 ms 50284 KB Output is correct
18 Correct 42 ms 51820 KB Output is correct
19 Correct 41 ms 53484 KB Output is correct
20 Correct 50 ms 55000 KB Output is correct
21 Correct 38 ms 50352 KB Output is correct
22 Correct 38 ms 51820 KB Output is correct
23 Correct 43 ms 53356 KB Output is correct
24 Correct 43 ms 54892 KB Output is correct
25 Correct 482 ms 251152 KB Output is correct
26 Correct 865 ms 467484 KB Output is correct
27 Runtime error 413 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
28 Halted 0 ms 0 KB -