[46] (多校联训) A层冲刺NOIP2024模拟赛06

#include<bits/stdc++.h>
using namespace std;
#include"include/hdk/rand.h"
using namespace hdk::Rand;
char getchar_(){
    char ch=getchar();
    if(ch>='a' and ch<='z') ch+=('A'-'a');
    while(ch!='S' and ch!='R' and ch!='P'){
        ch=getchar();
        if(ch>='a' and ch<='z') ch+=('A'-'a');
    }
    return ch;
}
int cnt=0,tot=0,totm=0;
int main(){
    randt.device_srand();
    while(1){
        totm++;
        cout<<"Act (R 石头 | S 剪刀 | P 布)>>";
        cout.flush();
        char ans=getchar_();
        char act=randt.randfrom<char>({'R','S','P'});
        cout<<"Robot act with   "<<act<<endl;
        if(ans==act){
            cout<<"Draw."<<endl;
        }
        else if(ans=='R'){
            if(act=='S'){
                cout<<"You win."<<endl;
                tot++;cnt++;
            }
            if(act=='P'){
                cout<<"You lost."<<endl;
                cnt=0;
            }
        }
        else if(ans=='S'){
            if(act=='R'){
                cout<<"You lost."<<endl;
                cnt=0;
            }
            if(act=='P'){
                cout<<"You win."<<endl;
                tot++;cnt++;
            }
        }
        else{
            if(act=='R'){
                cout<<"You win."<<endl;
                tot++;cnt++;
            }
            if(act=='S'){
                cout<<"You lost."<<endl;
                cnt=0;
            }
        }
        cout<<"Longest Streak: "<<cnt<<" Rounds"<<endl;
        cout<<"Win: "<<tot<<"/"<<totm<<endl<<endl;
    }
}

rand.h

#ifndef HDK
#define HDK 0
#endif
#ifndef RAND_H
#define RAND_H
#include<bits/stdc++.h>
using namespace std;
namespace hdk{
	namespace Rand{
random_device __rd;
struct __Rand{
	mt19937_64 _Rand;
	long long Rand(){
		return ((_Rand())|(_Rand()<<20))&(_Rand()|_Rand());
	}
	int SystemRand(long long a,long long b){
		return std::rand()%(b-a+1)+a;
	}
	int RandSignedInt(){
		return (int)Rand();
	}
	int RandSignedInt(int l,int r){
		int res=RandSignedInt();
		while(res<l or res>r) res=RandSignedInt();
		return res;
	}
	int RandInt(){
		return abs(RandSignedInt());
	}
	int RandInt(int a,int b){
		return abs(RandSignedInt())%(b-a+1)+a;
	}
	long long RandSignedLong(){
		return (long long)Rand();
	}
	long long RandSignedLong(long long l,long long r){
		long long res=RandSignedLong();
		while(res<l or res>r)  res=RandSignedLong();
		return res;
	}
	long long RandLong(){
		return llabs(RandSignedLong());
	}
	long long RandLong(long long a,long long b){
		return RandLong()%(b-a+1)+a;
	}
	unsigned long long device_srand(){
		unsigned long long seed=__rd();
		_Rand=mt19937_64(seed);
		return seed;
	}
	unsigned long long time_srand(){
		unsigned long long seed=time(0);
		_Rand=mt19937_64(seed);
		return seed;
	}
	void seed_srand(unsigned long long seed=time(0)){
		_Rand=mt19937_64(seed);
	}
	long double RandReal(int fixed){
		long long res=1;
		for(int i=1;i<=fixed;++i) res*=10;
		int rres=RandLong(0,res);
		cout<<rres<<endl;
		return rres*1.0/res;
	}
	bool access(double access_p){
		long long res=RandLong();
		cout<<res<<endl;
		if(res<=LLONG_MAX*access_p){
			return true;
		}
		return false;
	}
	template<typename T>
	T randfrom(vector<T>A){
		return A[RandLong(0,(int)A.size()-1)];
	}
	template<typename T>
	T randfrom(T A[],int l,int r){
		return A[RandLong(l,r)];
	}
}randt;
struct RandTest{
	void Balanced_Test(int r,int times,bool display=false){
		map<int,int>mp;
		double aver=times*1.0/r,sum=0;
		while(times--){
			mp[randt.RandInt(1,r)]++;
		}
		for(int i=1;i<=r;++i){
			if(display) cout<<"["<<i<<","<<mp[i]<<"]"<<endl;
			sum+=(aver-mp[i])*(aver-mp[i]);
		}
		cout<<"[randt Sqrt Dx]: "<<sqrt(sum)<<endl;
		cout<<endl;
	}
	void System_Balanced_Test(int r,int times,bool display=false){
		map<int,int>mp;srand(__rd());
		double aver=times*1.0/r,sum=0;
		while(times--){
			mp[rand()%r+1]++;
		}
		for(int i=1;i<=r;++i){
			if(display) cout<<"["<<i<<","<<mp[i]<<"]"<<endl;
			sum+=(aver-mp[i])*(aver-mp[i]);
		}
		cout<<"[std::rand Sqrt Dx]: "<<sqrt(sum)<<endl;
		cout<<endl;
	}
};
RandTest Test;
}
}
#endif

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