Submission #256945

#	Time	Username	Problem	Language	Result	Execution time	Memory
256945		blacktulip	Klasika (COCI20_klasika)	C++17	0 / 110	275 ms	29176 KiB

klasika

#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define mp make_pair
#define int long long
#define endl "\n"
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t,say=1,nodee=1,visit[li][5],xorr[li];
int cev;
char s[10];
vector<int> v,vec;

inline void build_trie(){
	int node=1;
	for(int i=0;i<(int)v.size();i++){
		if(visit[node][v[i]])node=visit[node][v[i]];
		else{
			visit[node][v[i]]=++nodee;
			node=nodee;
		}
	}
}

inline void ask_trie(){
	int node=1;
	for(int i=0;i<(int)v.size();i++){
		if(visit[node][!v[i]]){node=visit[node][!v[i]];vec.pb(1);}
		else if(visit[node][v[i]]){node=visit[node][v[i]];vec.pb(0);}
		else break;
	}
}

main(void){
	//~ freopen("at.txt","r",stdin);
	//~ freopen("att.txt","w",stdout);
	scanf("%lld",&t);
	for(int i=1;i<35;i++)v.pb(0);
	build_trie();
	while(t--){
		int x,y;
		scanf("%s %lld %lld",s,&x,&y);
		if(s[0]=='A'){
			xorr[++say]=(xorr[x]^y);
			int at=xorr[say];
			v.clear();
			while(at){
				v.pb(at%2);
				at/=2;
			}
			while((int)v.size()<35)v.pb(0);
			reverse(v.begin(),v.end());
			build_trie();
			continue;
		}
		int at=xorr[x];
		v.clear();
		while(at){
			v.pb(at%2);
			at/=2;
		}
		while((int)v.size()<35)v.pb(0);
		reverse(v.begin(),v.end());
		vec.clear();
		ask_trie();
		reverse(vec.begin(),vec.end());
		int ans=0;
		for(int i=0;i<(int)vec.size();i++){
			if(vec[i]==1)ans=(ans^(1ll<<i));
		}
		printf("%lld\n",ans);
	}
	return 0;
}

Compilation message (stderr)

klasika.cpp:53:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(void){
          ^
klasika.cpp: In function 'int main()':
klasika.cpp:56:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&t);
  ~~~~~^~~~~~~~~~~
klasika.cpp:61:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s %lld %lld",s,&x,&y);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 22
• Subtask 3: 0 / 33
• Subtask 4: 0 / 44