#include <bits/stdc++.h> using ll = long long; using namespace std; int main() { string s1, s2; cin >> s1 >> s2; ll len1 = s1.length(); ll len2 = s2.length(); ll maxLen = max(len1, len2); vector<ll> a(maxLen + 5, 0), b(maxLen + 5, 0), c(maxLen + 5, 0); // 从索引1开始存储,逆序存储数字 for ...