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#include <iostream>
using namespace std;

int main()
{
    int n, m;
    scanf("%d %d", &n, &m);
    m = n*m;
    if(m<=0)
    {
        printf("%d\n", 0);
        return 0;
    }
    bool flag = false;
    while(m>0)
    {
        if(m%10>0) flag = true;
        if(flag) printf("%d", m%10);
        m /= 10;
    }

    return 0;
}

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#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
int main() {
    int a, b;
    scanf("%d %d", &a, &b);
    string s = to_string(a * b);
    reverse(s.begin(), s.end());
    printf("%d", stoi(s));
    return 0;
}