[AcWing 794] 高精度除法
2022-04-25 22:52:53

#include<iostream>
#include<vector>
#include<algorithm>

using namespace std;

vector<int> div(vector<int>& A, int b, int &r)
{
    vector<int> C;
    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 = 0;
    auto C = div(A, b, r);
    for (int i = C.size() - 1; i >= 0; i --)    printf("%d", C[i]);
    cout << endl << r << endl;
    return 0;
}