[代码已更新，满分代码请移步]CCF CSP 201912-3 化学方程式配平【Python 满分代码 】

非满分代码

问题出在哪里，我也不知道。

给的测试样例是全对的，官方test显示运行超时，60分。

另外一个版本的代码，显示运行错误，60分，218ms，猜测应该不是真正的资源不足，也许是某个地方进入了死循环？

但苦于样本不够，找不出问题所在，故发出来恳请大神能指点一二

这份代码是在Ubuntu 18 ，Python3.7的环境下写的，非标准的评测环境。

【2020年2月13日】在win下做了一点优化，变成70分了，也许真的是超时？

# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
'''
11
Cu+As=Cs+Au
2H2+O2=2H2O
H2+Cl2=2NaCl
H2+Cl2=2HCl
CH4+2O2=CO2+2H2O
CaCl2+2AgNO3=Ca(NO3)2+2AgCl
3Ba(OH)2+2H3PO4=6H2O+Ba3(PO4)2
3Ba(OH)2+2H3PO4=Ba3(PO4)2+6H2O
4Zn+10HNO3=4Zn(NO3)2+NH4NO3+3H2O
4Au+8NaCN+2H2O+O2=4Na(Au(CN)2)+4NaOH
H2+O2=H2O
'''

class Elem:
    def __init__(self,in_name,in_num=1):
        self.name=in_name
        self.num=in_num
    def updateNum(self,in_num):
        self.num*=in_num

class Form:
    def __init__(self,in_str,in_Coef=1):
        self.inStr=in_str
        self.myCoef=in_Coef
        self.list_Elem=[]
        i=0
        while i < len(self.inStr):
            if self.inStr[i].isdigit():
                if i == 0:
                    i, coeftemp = self.getNum(i)
                    self.myCoef *= coeftemp
                    continue
                else:
                    print('May have ERROR in digit positon? Now inStr is {} , inStr[i] is {}.'.format(self.inStr,self.inStr[i]))
                    i+=1
                    continue
            elif self.inStr[i].isupper():
                i = self.disUpper(i)
                continue
            elif self.inStr[i]=='(':
                i = self.disBrackest(i)
                continue
            else:
                print('May have ERROR in current positon? Now inStr is {} ,inStr[i] is {}.'.format(self.inStr,self.inStr[i]))
                i+=1
                continue
        
                
        if self.myCoef!=1:
            #print('Mycoef is %d'%self.myCoef)
            #print('before change:')
            #self.printElem()
            for i in range(len(self.list_Elem)):
                self.list_Elem[i].updateNum(self.myCoef)
            #print('after change:')
            #self.printElem()
        '''
        print('\n')
        self.printElem()
        '''
    def getNum(self, i):
        temp_num=''
        #print('i is %d'%i)
        #print(self.inStr[i])
        while i<len(self.inStr) and self.inStr[i].isdigit():
            
            temp_num+=self.inStr[i]
            #print('temp_num is %s'%temp_num)
            i+=1
        #print('temp_num is %s'%temp_num)
        return i,int(temp_num)
    
    def printElem(self):
        for i in range(len(self.list_Elem)):
            print('{}:{}'.format(self.list_Elem[i].name,self.list_Elem[i].num))

    def disUpper(self, i):
        name_temp = self.inStr[i]
        i+=1
        if i<len(self.inStr):
            if self.inStr[i].isdigit():
                i, numtemp = self.getNum(i)
                self.list_Elem.append(Elem(name_temp,numtemp))
                return i
            elif self.inStr[i].islower():
                name_temp += self.inStr[i]
                if i + 1 < len(self.inStr) and self.inStr[i + 1].isdigit():
                    i += 1
                    i, numtemp = self.getNum(i)
                    self.list_Elem.append(Elem(name_temp,numtemp))
                    return i
                else:
                    self.list_Elem.append(Elem(name_temp))
                    return i+1
            else:
                self.list_Elem.append(Elem(name_temp))
                return i
        else:
            self.list_Elem.append(Elem(name_temp))
            return i


    def disBrackest(self, i):
        l = i+1
        r = self.inStr.rfind(')')
        i=r
        if i + 1 < len(self.inStr) and self.inStr[i + 1].isdigit():
            i+=1
            i, tempcoef = self.getNum(i)
            self.list_Elem.extend(Form(self.inStr[l:r],tempcoef).list_Elem)
            return i
        else:
            self.list_Elem.extend(Form(self.inStr[l:r]).list_Elem)
            return i + 1

class E:
    def __init__(self,in_str):
        instr=in_str.split('=')
        instr_l=instr[0].split('+')
        instr_r=instr[1].split('+')
        self.list_Elem_l=[Form(i).list_Elem for i in instr_l]
        self.list_Elem_r = [Form(i).list_Elem for i in instr_r]

        '''
        for i in instr_l:
            self.list_Elem_l.extend(Form(i).list_Elem)
        for i in instr_r:
            self.list_Elem_r.extend(Form(i).list_Elem)
        #self.printElem(self.list_Elem_r)
        '''

        '''
        print('L:')
        self.printElem(self.list_Elem_l)
        print('R:')
        self.printElem(self.list_Elem_r)
        '''
        self.dict_l={}
        self.dict_r={}
        self.newDict(self.dict_l,self.list_Elem_l)
        self.newDict(self.dict_r,self.list_Elem_r)
        
        #print(self.dict_l)
        #print(self.dict_r)
        


    def newDict(self,in_dict,in_list):
        for i in in_list:
            if i.name in in_dict:
               in_dict[i.name]+=i.num
            else:
                in_dict.setdefault(i.name,i.num)
    def printElem(self,in_list):
        for i in in_list:
            print('{}:{}'.format(i.name,i.num))
    def printResult(self):
        if self.dict_l==self.dict_r:
            print('Y')
        else:
            print('N')
'''
n=int(input())
list_in=[]
for i in range(n):
    list_in.append(input())
for i in list_in:
    E(i).printResult()     
'''
n=int(input())
for i in range(n):
    E(input()).printResult()
'''
用这个注释掉的for循环，最后一行要按回车才出结果，因此新增一个list接收输入

'''