:heavy_check_mark: data_structure/test/LC_hash_map.test.cpp

Depends on

Code

#define PROBLEM "https://judge.yosupo.jp/problem/associative_array"
#include"../../util/template.hpp"
#include"../hash_map.hpp"
#include"../../util/fastIO.hpp"

int main(){
    hash_map<lint,lint>m;
    lint q;
    fin>>q;
    while(q--){
        lint c;
        fin>>c;
        if(c==0){
            lint k,v;
            fin>>k>>v;
            m[k]=v;
        }else{
            lint k;
            fin>>k;
            fout<<m[k]<<endl;
        }
    }
}
#line 1 "data_structure/test/LC_hash_map.test.cpp"
#define PROBLEM "https://judge.yosupo.jp/problem/associative_array"
#line 2 "util/template.hpp"
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx2")
#include<bits/stdc++.h>
using namespace std;
struct __INIT__{__INIT__(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(15);}}__INIT__;
typedef long long lint;
#define INF (1LL<<60)
#define IINF (1<<30)
#define EPS (1e-10)
#define endl ('\n')
typedef vector<lint> vec;
typedef vector<vector<lint>> mat;
typedef vector<vector<vector<lint>>> mat3;
typedef vector<string> svec;
typedef vector<vector<string>> smat;
template<typename T>using V=vector<T>;
template<typename T>using VV=V<V<T>>;
template<typename T>inline void output(T t){bool f=0;for(auto i:t){cout<<(f?" ":"")<<i;f=1;}cout<<endl;}
template<typename T>inline void output2(T t){for(auto i:t)output(i);}
template<typename T>inline void debug(T t){bool f=0;for(auto i:t){cerr<<(f?" ":"")<<i;f=1;}cerr<<endl;}
template<typename T>inline void debug2(T t){for(auto i:t)output(i);}
#define loop(n) for(long long _=0;_<(long long)(n);++_)
#define _overload4(_1,_2,_3,_4,name,...) name
#define __rep(i,a) repi(i,0,a,1)
#define _rep(i,a,b) repi(i,a,b,1)
#define repi(i,a,b,c) for(long long i=(long long)(a);i<(long long)(b);i+=c)
#define rep(...) _overload4(__VA_ARGS__,repi,_rep,__rep)(__VA_ARGS__)
#define _overload3_rev(_1,_2,_3,name,...) name
#define _rep_rev(i,a) repi_rev(i,0,a)
#define repi_rev(i,a,b) for(long long i=(long long)(b)-1;i>=(long long)(a);--i)
#define rrep(...) _overload3_rev(__VA_ARGS__,repi_rev,_rep_rev)(__VA_ARGS__)

// #define rep(i,...) for(auto i:range(__VA_ARGS__)) 
// #define rrep(i,...) for(auto i:reversed(range(__VA_ARGS__)))
// #define repi(i,a,b) for(lint i=lint(a);i<(lint)(b);++i)
// #define rrepi(i,a,b) for(lint i=lint(b)-1;i>=lint(a);--i)
// #define irep(i) for(lint i=0;;++i)
// inline vector<long long> range(long long n){if(n<=0)return vector<long long>();vector<long long>v(n);iota(v.begin(),v.end(),0LL);return v;}
// inline vector<long long> range(long long a,long long b){if(b<=a)return vector<long long>();vector<long long>v(b-a);iota(v.begin(),v.end(),a);return v;}
// inline vector<long long> range(long long a,long long b,long long c){if((b-a+c-1)/c<=0)return vector<long long>();vector<long long>v((b-a+c-1)/c);for(int i=0;i<(int)v.size();++i)v[i]=i?v[i-1]+c:a;return v;}
// template<typename T>inline T reversed(T v){reverse(v.begin(),v.end());return v;}
#define all(n) begin(n),end(n)
template<typename T,typename E>bool chmin(T& s,const E& t){bool res=s>t;s=min<T>(s,t);return res;}
template<typename T,typename E>bool chmax(T& s,const E& t){bool res=s<t;s=max<T>(s,t);return res;}
const vector<lint> dx={1,0,-1,0,1,1,-1,-1};
const vector<lint> dy={0,1,0,-1,1,-1,1,-1};
#define SUM(v) accumulate(all(v),0LL)
template<typename T,typename ...Args>auto make_vector(T x,int arg,Args ...args){if constexpr(sizeof...(args)==0)return vector<T>(arg,x);else return vector(arg,make_vector<T>(x,args...));}
#define extrep(v,...) for(auto v:__MAKE_MAT__({__VA_ARGS__}))
#define bit(n,a) ((n>>a)&1)
vector<vector<long long>> __MAKE_MAT__(vector<long long> v){if(v.empty())return vector<vector<long long>>(1,vector<long long>());long long n=v.back();v.pop_back();vector<vector<long long>> ret;vector<vector<long long>> tmp=__MAKE_MAT__(v);for(auto e:tmp)for(long long i=0;i<n;++i){ret.push_back(e);ret.back().push_back(i);}return ret;}
using graph=vector<vector<int>>;
template<typename T>using graph_w=vector<vector<pair<int,T>>>;
template<typename T,typename E>ostream& operator<<(ostream& out,pair<T,E>v){out<<"("<<v.first<<","<<v.second<<")";return out;}
constexpr inline long long powll(long long a,long long b){long long res=1;while(b--)res*=a;return res;}
#line 3 "data_structure/hash_map.hpp"
/**
 * @brief HashMap
 */

template<typename T,typename E,typename F=std::hash<T>>
struct hash_map{
    struct node{
        T key;E val;
        unsigned long b;
        node():key(T()),val(E()),b(0){}
        node(T key,E val):key(key),val(val),b(0){}
        static node* alc;
        static size_t cnt;
        static size_t alc_sz;
        void* operator new(size_t){
            if(alc_sz==cnt){
                alc_sz*=2;
                alc=(node*)malloc(alc_sz*sizeof(node));
                cnt=0;
            }
            return alc+cnt++;
        }
    };
    size_t sz;
    node* point;
    constexpr static size_t mod_list[24]={37,67,131,257,521,1031,2053,4099,8209,16411,32771,65537,131101,262147,524309,1048583,2097169,4194319,8388617,16777259,33554467,67108879,134217757,268435459};
    node** table;
    F op;
    hash_map(F op=F()):sz(15),op(op){
        table=new node*[mod_list[sz]]();
    }
    node** _realloc(){
        const size_t old_sz=sz;
        while(1){
            sz++;
            bool fail=0;
            node** tmp=new node*[mod_list[sz]]();
            for(node** itr=table;itr<table+mod_list[old_sz];++itr){
                if(*itr==0)continue;
                const size_t ha=op((*itr)->key)%mod_list[sz];
                (*itr)->b=0;
                if(insert(tmp,*itr,ha).first==0){fail=1;break;}
            }
            if(fail){
                delete[] tmp;
            }
            else {
                delete[] table;
                table=tmp;
                break;
            }
        }
        return table;
    }
    std::pair<bool,node*> insert(node** table,node* t,size_t tmp){
        if(!table[tmp])return {true,table[tmp]=t};
        size_t k=0;
        unsigned long tt=~table[tmp]->b;
        const size_t pre=tmp;
        unsigned long x=1;
        while(tt){
            tmp+=(k=__builtin_ctzl(tt)+1);
            x<<=k;
            tt>>=k;
            tmp%=mod_list[sz];
            if(!table[tmp]){
                table[tmp]=t;
                table[pre]->b|=x>>1;
                return {true,table[tmp]};
            }
        }
        return {false,nullptr};
    }
    std::pair<bool,node*> search(T key,size_t tmp){
        int k=0;
        if(!table[tmp])return {false,nullptr};
        if(table[tmp]->key==key)return {true,table[tmp]};

        unsigned long t=table[tmp]->b;
        while(t){
            tmp+=(k=__builtin_ctzl(t)+1);
            tmp%=mod_list[sz];
            t>>=k;
            if(table[tmp]->key==key)return {true,table[tmp]};
        }
        return {false,nullptr};
    }
    E& operator[](T key){
        size_t ha=op(key)%mod_list[sz];
        auto res=search(key,ha);
        if(res.first)return res.second->val;
        else {
            while(1){
                auto res=insert(table,new node(key,E()),ha);
                if(res.first)return res.second->val;
                _realloc();
                ha=op(key)%mod_list[sz];
            }
        }
    }
};
template<typename T,typename E,typename F=std::hash<T>>typename hash_map<T,E,F>::node* hash_map<T,E,F>::node::alc=(node*)malloc(sizeof(node));
template<typename T,typename E,typename F=std::hash<T>>size_t hash_map<T,E,F>::node::cnt=0;
template<typename T,typename E,typename F=std::hash<T>>size_t hash_map<T,E,F>::node::alc_sz=1;
#line 1 "util/fastIO.hpp"
/**
 * @brief 高速入出力(WIP)
 */

struct fastI{
    char in[1<<26];
    char const*o;
    fastI(){
        o = in; 
        in[fread(in,1,sizeof(in)-4,stdin)]=0;
    }
    fastI& operator>>(char& c){
        while(*o&&*o<=32)++o;
        c=*o++;
        return *this;
    }
    fastI& operator>>(int& u){
        u=0; 
        unsigned s=0;
        while(*o&&*o<=32)++o;
        if (*o == '-')s = ~s, ++o; else if (*o == '+')++o;
        while('0'<=*o && *o<='9')u = (u<<3) + (u << 1) + (*o++ - '0');
        (u^=s)+=!!s;
        return *this;
    }
    fastI& operator>>(long long& u){
        u=0;
        uint64_t s=0;
        while(*o&&*o<=32)++o;
        if (*o == '-')s = ~s, ++o; else if (*o == '+')++o;
        while('0'<=*o && *o<='9')u = (u<<3) + (u << 1) + (*o++ - '0');
        (u^=s)+=!!s;
        return *this;
    }
} fin;

struct fastO{
    char out[1<<26];
    char *o;
    fastO(){
        o=out;
    }
    ~fastO(){
        fwrite(out,1,o-out,stdout);
    }
    fastO& operator<<(const char& c){
        *o++=c;
        return *this;
    }
    fastO& operator<<(int u){
         if(u){
            auto be=o;
            while(u)*o++=u%10+'0',u/=10;
            auto en=o;
            while(be<en)std::swap(*--en,*be++);
        }else *o++='0';
        return *this;
    }
    fastO& operator<<(long long u){
        if(u){
            auto be=o;
            while(u)*o++=u%10+'0',u/=10;
            auto en=o;
            while(be<en)std::swap(*--en,*be++);
        }else *o++='0';
        return *this;
    }
} fout;
#line 5 "data_structure/test/LC_hash_map.test.cpp"

int main(){
    hash_map<lint,lint>m;
    lint q;
    fin>>q;
    while(q--){
        lint c;
        fin>>c;
        if(c==0){
            lint k,v;
            fin>>k>>v;
            m[k]=v;
        }else{
            lint k;
            fin>>k;
            fout<<m[k]<<endl;
        }
    }
}
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