高精度除法
#include<iostream>
#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, r;
vector<int> A;
cin >> a >> b;
for (int i = a.size() - 1; i >= 0; i -- ) A.push_back(a[i] - '0');
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;
}