hdu 1753 坑爹的高精度

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1753

wa了N次，惭愧啊

#include<iostream>
#include<string>
#include<cstring>
const int N=1000;
using namespace std;
int num[N];

int main(){
    string str1,str2;
    while(cin>>str1>>str2){
        string s1[2],s2[2],s3,s,s4;
        int i=0,j=0,k=0,temp=0;
        while((str1[i]!='.'&&i<str1.size())||(str2[j]!='.'&&j<str2.size())){
            if(str1[i]!='.'&&i<str1.size()){
                s1[0]+=str1[i];
                i++;
            }else if(str2[j]!='.'&&j<str2.size()){
                s1[1]+=str2[j];
                j++;
            }
        }
        i++,j++;
        while(i<str1.size()||j<str2.size()){
            if(i<str1.size()){
                s2[0]+=str1[i];
                i++;
            }else if(j<str2.size()){
                s2[1]+=str2[j];
                j++;
            }
        }
        memset(num,0,sizeof(num));
        int len1=s2[0].size()-1;
        int len2=s2[1].size()-1;
        if(len1==-1){
            s=s2[1];
        }else if(len2==-1){
            s=s2[0];
        }else {
            int len=len1<len2?len1:len2;
            for(i=len,j=len,k=0;i>=0&&j>=0;i--,j--){
                temp+=s2[0][i]+s2[1][j]-96;
                num[k++]=temp%10;
                temp/=10;
                num[k]=temp;
            }
            while(i>=0){
                temp+=s2[0][i--]-48;
                num[k++]=temp%10;
                temp/=10;
                num[k]=temp;
            }
            while(j>=0){
                temp+=s2[1][j--]-48;
                num[k++]=temp%10;
                temp/=10;
                num[k]=temp;
            }
            while(k>=0&&k>len&&num[k]==0)k--;
            if(temp)k--;
            while(k>=0){
                s+=num[k--]+48;
            }
            for(i=len+1;i<=len1;i++){
                s+=s2[0][i];
            }
            for(i=len+1;i<=len2;i++){
                s+=s2[1][i];
            }
        }
        i=s.size()-1;
        while(i>=0&&s[i]=='0')i--;
        if(i<0)s4="";
        else {
            for(k=0;k<=i;k++){
                s4+=s[k];
            }
        }
        memset(num,0,sizeof(num));
        len1=s1[0].size(),len2=s1[1].size();
        k=0;
        for(i=len1-1,j=len2-1;i>=0&&j>=0;i--,j--){
            temp+=s1[0][i]+s1[1][j]-96;
            num[k++]=temp%10;
            temp/=10;
            num[k]=temp;
        }
        while(i>=0){
            temp+=s1[0][i--]-48;
            num[k++]=temp%10;
            temp/=10;
            num[k]=temp;
        }
        while(j>=0){
            temp+=s1[1][j--]-48;
            num[k++]=temp%10;
            temp/=10;
            num[k]=temp;
        }
        while(k>=0&&num[k]==0)k--;
        while(k>=0){
            s3+=num[k--]+48;
        }
        if(s3.size()==0)s3="0";
        if(s4.size()){
            cout<<s3<<"."<<s4<<endl;
        }else 
            cout<<s3<<endl;
    }
    return 0;
}