#include <bits/stdc++.h> using namespace std; int main() { int a, b; scanf("%d%d", &a, &b); int a1 = a/10, a2 = a%10, b1 = b/10, b2 = b%10; int c=a1 * b1 + a1 * b2 + a2 * b1 + a2 * b2; printf("%d", c); }