·座位旁边一个同学，哼着歌，说着：“要用高精度啊，好麻烦，不想写啊啊啊，不想写啊，不想写啊……”他的这首歌持续了大约6min，然后他的DEV里一个漂亮的高精度运算代码已经写好了。
·看来大米饼也不能甘于落后啊，模板来啦：
1 #include<vector>
2 #include<stdio.h>
3 #include<cstring>
4 #define ll long long
5 #define go(i,a,b) for(int i=a;i<=b;i++)
6 #define ro(i,a,b) for(int i=a;i>=b;i--)
7 using namespace std;const int N=5000003;
8 char A[N],B[N];
9 struct Rabbit
10 {
11 static const ll gap=10;
12 static const ll len=1;
13 vector<int>s;Rabbit(ll num=0){*this=num;}
14 int ID(char c){return c-'0';}
15 Rabbit operator=(char *T)
16 {
17 s.clear();int n=strlen(T),_=0,f=1;
18 ro(i,n-1,0){_=_+ID(T[i])*f,f*=10,
19 i==0||(n-1-i)%len==len-1?s.push_back(_),_=0,f=1:1;}
20 return *this;
21 }
22 Rabbit operator=(ll T)
23 {
24 s.clear();do{s.push_back(T%gap),T/=gap;}while(T);return *this;
25 }
26 Rabbit operator+(Rabbit b)
27 {
28 Rabbit c;c.s.clear();
29 int i=0,_=0,n=s.size(),m=b.s.size(),w;
30 while(_||i<n||i<m)w=_,i<n?w+=s[i]:1,i<m?w+=b.s[i]:1,
31 c.s.push_back(w%gap),_/=gap,i++;return c;
32 }
33 Rabbit operator-(Rabbit b)
34 {
35 Rabbit c;c.s.clear();
36 int i=0,g=0,n=s.size(),m=b.s.size(),w;
37 while(i<n)w=s[i]-g,i<m?w-=b.s[i]:1,
38 w<0?g=1,w+=gap:g=0,c.s.push_back(w),i++;
39 i=c.s.size()-1;while(c.s[i]==0&&i)c.s.pop_back(),i--;
40 return c;
41 }
42 Rabbit operator*(Rabbit b)
43 {
44 Rabbit c;int n=s.size(),m=b.s.size();c.s.resize(m+n,0);
45 go(i,0,n-1)go(j,0,m-1)c.s[i+j]+=s[i]*b.s[j];
46 go(i,0,n+m-1)c.s[i+1]+=c.s[i]/gap,c.s[i]%=gap;
47 int i=n+m-1;while(c.s[i]==0&&i)c.s.pop_back(),i--;
48 return c;
49 }
50 Rabbit operator/(Rabbit b)
51 {
52 Rabbit c,d=0;int n=s.size();c.s.resize(n,0);
53 ro(i,n-1,0){d=d*gap;d.s[0]=s[i];
54 while(d>=b)d-=b,c.s[i]++;}
55 int i=n-1;while(c.s[i]==0&&i)c.s.pop_back(),i--;
56 return c;
57 }
58 Rabbit operator%(Rabbit b){Rabbit w=*this/b;w=*this-w*b;return w;}
59 bool operator<(const Rabbit& b)const
60 {
61 int n=s.size(),m=b.s.size();
62 if(m>n)return 1;if(m<n)return 0;ro(i,n-1,0){
63 if(s[i]<b.s[i])return 1;
64 if(s[i]>b.s[i])return 0;}return 0;
65 }
66 bool operator> (Rabbit b)const{return b<*this;}
67 bool operator>=(Rabbit b)const{return !(*this<b);}
68 bool operator<=(Rabbit b)const{return !(b<*this);}
69 bool operator==(Rabbit b)const{return !(*this<b)&&!(b<*this);}
70 bool operator!=(Rabbit b)const{return (*this<b)||(b<*this);}
71
72 Rabbit operator+=(Rabbit b){*this=*this+b;return *this;}
73 Rabbit operator-=(Rabbit b){*this=*this-b;return *this;}
74 Rabbit operator*=(Rabbit b){*this=*this*b;return *this;}
75 Rabbit operator/=(Rabbit b){*this=*this/b;return *this;}
76 Rabbit operator%=(Rabbit b){*this=*this%b;return *this;}
77
78 void Print(){int n=s.size();ro(i,n-1,0)printf("%d",s[i]);puts("");}
79 };
80 int main()
81 {
82
83 scanf("%s%s",A,B);
84 Rabbit a,b;a=A;b=B;
85 (a/b).Print();//b.Print();
86 return 0;
87 }//Paul_Guderian
这条，长长的街道，留下我多少青春和梦想，
它会把我，带向，何方。——————汪峰《街道》