自己写的高精度加法，大神们看下还有啥可以改进的

#include<bits/stdc++.h>
using namespace std;
const int N = 1e6 + 10;
vector<int> add(vector<int>&A,vector<int>&B){
	vector<int> C;
	int t = 0;
	for(int i = 0;i< A.size()||i<B.size();i++){
			if(i<A.size())t+=A[i];
		if(i<B.size())t+=B[i];
		C.push_back(t%10);
		t /=10;
	}
	if(t)C.push_back(1);
	return C;
}
int main(){
	string a,b;
	vector<int>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');
	auto C = add(A,B);
	for(int i = C.size()-1;i>=0;i--) printf("%d",C[i]);
	return 0; 
}