AcWing 791. 高精度加法

https://www.acwing.com/problem/content/793/

#include<bits/stdc++.h>
using namespace std;
vector<int> add(vector<int> &A, vector<int> &B) {
    vector<int> C;
    int t = ;
    for (int i = ; 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 % );
        t /= ;
    }
    if (t) C.push_back();
    return C;
}
int main() {
    string a,b;
    vector<int>A,B;
    cin>>a>>b;//a=123456
    for(int i=a.size()-; i>=; i--)  A.push_back(a[i]-'');
    for(int i=b.size()-; i>=; i--)  B.push_back(b[i]-'');
    auto C=add(A,B);
    for(int i=C.size()-; i>=; i--) printf("%d",C[i]);
    return ;
}