富学识 博闻广记 源心性 静雅润和

//i yy;
//o yy
//s xx yy
//t yy yy
//+
//-
//*
///
//%
//: xxxx
//>
//<
//=
//g



    string operator +(string x,string y)
    {
        string z;
        int sum=0;
        reverse(x.begin(),x.end());
        reverse(y.begin(),y.end());
        for(int i=0;x.size()>i||y.size()>i;i++)
        {
            if(x.size()>i)sum+=x[i]-'0';
            if(y.size()>i)sum+=y[i]-'0';
            z.push_back(sum%10+'0');
            sum/=10;
        }
        if(sum!=0)z.push_back('1');
        reverse(z.begin(),z.end());
        return z;
    }
    string operator -(string x,string y)
    {
        string z;
        int sum=0;int fl=0;
        reverse(x.begin(),x.end());
        reverse(y.begin(),y.end());
        if(x.size()<y.size() || (x.size()==y.size() && x<y)){swap(x,y);fl=1;}
        for(int i=0;x.size()>i;i++)
        {
            sum=0;
            sum+=x[i]-'0';
            if(y.size()>i)sum-=y[i]-'0';
            if(sum<0)
            {
                sum+=10;
                x[i+1]--;
            }
            z.push_back(sum+'0');
        }
        while(z.size()>1 && z.back()=='0')z.pop_back();
        if(fl==1)z.push_back('-');
        reverse(z.begin(),z.end());
        return z;
    }
    string operator *(string x,string y)
    {
        string z;
    	reverse(x.begin(),x.end());
    	reverse(y.begin(),y.end());
    	for(int i=0;i<x.length();i++)
    	{
    		for(int j=0;j<y.length();j++)
    		{
    			if(i+j>=z.length())z.push_back('0');
    			int sum=(x[i]-'0')*(y[j]-'0')+(z[i+j]-'0');
    			z[i+j]=sum%10+'0';
    			if(i+j+1>=z.length())z.push_back('0');
    			z[i+j+1]+=sum/10;
    		}
    	}
    	while(z.size()>1 && z.back()=='0')z.pop_back();
    	reverse(z.begin(),z.end());
    	return z;
    }
    string operator /(string x,string y)
    {
        string z,k;
        for(int i=0;i<x.size();i++)
        {
            k.push_back(x[i]);
            int cnt=0;
            while(k.size()>y.size()||(k.size()==y.size() && k>=y))
            {
                k=k-y;
                cnt++;
            }
            z.push_back(cnt+'0');
        }
    	reverse(z.begin(),z.end());
        while(z.size()>1 && z.back()=='0')z.pop_back();
    	reverse(z.begin(),z.end());
        return z;
    }
    string operator %(string x,string y)
    {
        string z,k;
        for(int i=0;i<x.size();i++)
        {
            k.push_back(x[i]);
            int cnt=0;
            while(k.size()>y.size()||(k.size()==y.size() && k>=y))
            {
                k=k-y;
                cnt++;
            }
            z.push_back(cnt+'0');
        }
        return k;
    }