题目描述

https://www.acwing.com/problem/content/796/

C++ 代码

#include<iostream>
#include<cstdio>
#include<vector>
#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;
    vector<int> A;
    cin>>a>>b;
    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<<r<<endl;
    return 0;
}