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源心性 静雅润和

为人静雅，处事润和

#include <bits/stdc++.h>/////////
using namespace std;/////////////
stack<int> x,y;int n,f,c,ans,a,b;
int main(){y.push(40);while(c!=61
){c=getchar();if(isdigit(c)){n=n*
10+c-48;f=1;}else{if(f)x.push(n);
f=n=0;while(c%10==1?y.top()!=40//
:1935%c==0&&1974%y.top()==0){////
a=x.top(),x.pop();b=x.top(),x.pop
();char o=y.top();y.pop();if(o///
==43)ans=b+a;if(o==45)ans=b-a;if(
o==42)ans=b*a;if(o==47)ans=b/a;if
(o==37)ans=b%a;x.push(ans);}y.///
push(c);if(y.top()==41)y.pop(),y.
pop();}}cout<<x.top();}//孙子涵///

//01f
//02t
//03+
//04-
//05*
//06/
//07%
//08n
//09:
//10z
//11x
//12y
//13*
    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;
    }