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OI-codes/S2OJ/1546/1546.cpp

25 lines
512 B
C++

#include <iostream>
#include <numeric>
#include <string>
#include <unordered_map>
using std::cin;
using std::cout;
const char endl = '\n';
int main() {
std::ios::sync_with_stdio(false);
cin.tie(nullptr);
std::string a, b;
std::unordered_map<char, int> map;
cin >> a >> b;
for (char c : b) map[c]++;
cout << (a.size() + 1) * (b.size() + 1) - std::accumulate(a.begin(), a.end(), 0ll, [&](long long lhs, char rhs) -> long long { return lhs + map[rhs]; }) << endl;
return 0;
}