#include <iostream>
#include <stdio.h>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
vector<int> div(vector<int> &A,int b,int &r)
{
	vector<int> C;
	r=0;
	for(int i=A.size()-1;i>=0;i--)
	{
		r=r*10+A[i];
		C.push_back(r/b);
	    r%=b;
	}
	reverse(C.begin(),C.end());
    while(C.size()>1&&C.back()==0) C.pop_back();
	return C;
}
int main()
{
	string a;
	int b;
	cin>>a>>b;
	vector<int> A;
	for(int i=a.size()-1;i>=0;i--) A.push_back(a[i]-‘0‘);
	int r;
	vector<int> C=div(A,b,r);
	for(int i=C.size()-1;i>=0;i--) printf("%d",C[i]);
	cout<<endl;
	cout<<r<<endl;
	return 0;
}
原文:https://www.cnblogs.com/xiao--yang/p/14770363.html