题目描述
请输出两个数的和,差,积,商,取余。注意不要有前导零。
输入
多组数据,每组数据是两个整数A,B(0<=A<=10^100,0<B<=10^100).
输出
对于每组数据,输出五个整数,分别代表A+B,A-B,A*B,A/B,A%B.
样例输入
5 2
11 3
样例输出
7 3 10 2 1
14 8 33 3 2
#include <iostream>
#include <cstring>
#include <algorithm>
#include <string>
#include <cmath>
using namespace std;
typedef unsigned long ul;
string v;
int absInt(int a){return a>0?a:a*-1;}
//if a>=b return true;
bool compare(string a,string b)
{
if(a[0] == '-')
return false;
if(a.size()>b.size())
return true;
else if(a.size()==b.size())
return a>=b;
return false;
}
string add(string a,string b)
{
reverse(a.begin(), a.end());
reverse(b.begin(), b.end());
if(a.size()<b.size())
swap(a, b);
bool f = 0;
for(int i=0;i<b.size();i++)
{
a[i] = a[i] +b[i]-48+f;
if(a[i]>'9')
{
f = true;
a[i] = a[i] -10;
}
else
f = false;
}
for(ul i=b.size();i<a.size();i++)
{
a[i] = a[i]+f;
if(a[i]>'9')
{
f = true;
a[i] = a[i] -10;
}
else
f = false;
}
if(f)
a = a+"1";
reverse(a.begin(),a.end());
return a;
}
string sub(string a,string b)
{
bool flag = compare(a, b);
if(!flag)
swap(a,b);
reverse(a.begin(), a.end());
reverse(b.begin(), b.end());
bool f = false;
for(int i=0;i<b.size();i++)
{
a[i] = a[i] + '0' - b[i] -f;
if(a[i]<'0')
{
f = true;
a[i] = a[i] + 10;
}
else
f = false;
}
for(ul i=b.size();i<a.size();i++)
{
a[i] = a[i] - f;
if(a[i]<'0')
{
f = true;
a[i] = a[i] + 10;
}
else
f = false;
}
reverse(a.begin(),a.end());
while(*a.begin()=='0')
a.erase(a.begin());
if(a.size()==0)
a = "0";
if(!flag)
a = "-"+a;
return a;
}
string mul(string a,int b)
{
int flag = 0;
for(int i=a.size()-1;i>=0;i--)
{
int str = (a[i]-48)*b + flag;
a[i] = str%10 +48;
flag = str/10;
}
if(flag)
a.insert(a.begin(), flag+48);
while(*a.begin()=='0')
a.erase(a.begin());
if(a.size()==0)
a = "0";
return a;
}
string mul(string a,string b)
{
string c;
if(a.size()<b.size())
swap(a, b);
c = mul(a,b[b.size()-1]-'0');
string k = "0";
for(int i=b.size()-2;i>=0;i--)
{
string f = mul(a,b[i]-'0');
f = f+k;
c = add(c, f);
k = k + "0";
}
return c;
}
string div(string a,string b)
{
string c;
if(a.size()<b.size())
{
c = "0";
v = a;
}
if(a.size()==b.size()&&a<b)
{
c = "0";
v = a;
}
string f(a.begin(),a.begin()+b.size());
int res = 0;
while(compare(f, b))
{
f = sub(f,b);
res++;
}
c.insert(c.end(), res+'0');
for(ul i=b.size();i<a.size();i++)
{
f.insert(f.end(), a[i]);
while(*f.begin()=='0')
f.erase(f.begin());
int res = 0;
while(compare(f, b))
{
f = sub(f,b);
res++;
}
c.insert(c.end(), res+'0');
}
v = f;
while(*c.begin()=='0')
c.erase(c.begin());
if(c.size()==0)
c = "0";
return c;
}
int main()
{
string a,b;
while(cin>>a>>b)
{
cout<<add(a,b)<<' '<<sub(a,b)<<' '<<mul(a,b)<<' '<<div(a, b)<<' '<<v<<endl;
}
return 0;
}
/*
input:
5 2
output:
7 3 10 2 1
input:
11 3
output:
14 8 33 3 2
*/
//之后会扩展到整数域的计算