#include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
for (int i = 0; i < 5; i++)
{
char ope;
int x;
cin >> ope >> x;
if (ope == '+')
{
n = n + x;
}
else if (ope == '-')
{
n = n - x;
}
else if (ope == '*')
{
n = n * x;
}
}
cout << n << endl;
return 0;
}
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