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#include <bits/stdc++.h>
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using namespace std;
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vector<int> mul(vector<int>& A, int b) {
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    vector<int> C;
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    int t = 0;
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    for (int i = 0; i < (int)A.size() || t; i++) {
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        if (i < (int)A.size()) t += A[i] * b;
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        C.push_back(t % 10);
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        t /= 10;
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    }
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    while (C.size() > 1 && C.back() == 0) C.pop_back();
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    return C;
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}
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int main() {
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    string a;
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    int b;
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    cin >> a >> b;
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    vector<int> A;
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    for (int i = a.size() - 1; i >= 0; i--) {
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        A.push_back(a[i] - '0');
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    }
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    vector<int> C = mul(A, b);
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    for (int i = C.size() - 1; i >= 0; i--) printf("%d", C[i]);
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    return 0;
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}