2022-01-01每日刷题打卡

#include 
#include 
using namespace std;

vector add(vector &A, vector &B)
{
	if(A.size() < B.size()) return add(B, A);
	
	vector C;
	int t = 0;
	for(int i = 0; i < A.size(); i++)
	{
		t += A[i];
		if(i < B.size()) t += B[i];
		C.push_back(t % 10);
		t /= 10;	
	}
	
	if(t) C.push_back(t);
	return C; 	
}

int main()
{
	string a, b;
	vector A, B;
	cin >> a >> b;
	
	for(int i = a.size() - 1; i >= 0; i--) A.push_back(a[i] - '0');
	for(int i = b.size() - 1; i >= 0; i--) B.push_back(b[i] - '0');
	
	vector C = add(A, B);
	
	for(int i = C.size() - 1; i >= 0; i--) cout << C[i];
	cout << endl;
	
	return 0;	
}