题解 | #特殊乘法#
特殊乘法
https://www.nowcoder.com/practice/a5edebf0622045468436c74c3a34240f
#include<bits/stdc++.h>
using namespace std;
int main() {
string s1, s2;
cin >> s1 >> s2;
int sum = 0;
for (int i = 0; i < s1.length(); i++) {
for (int j = 0; j < s2.length(); j++) {
sum += (s1[i] - '0') * (s2[j] - '0');
}
}
cout << sum;
}