#include <bits/stdc++.h>
using namespace std;
int main() {
int V,A,B,C;
cin >> V >>A>>B>>C;
while (V>0) {
if (V-A>=0) {
V-=A;
}
else if (V-A<0)
{
cout << "F" << endl;
}
return 0 ;
if (V-B >=0)
V-=B;
else if (V-B<0)
{
cout << "M" << endl;
}
return 0;
if (V-C>=0)
{
V-=C;
}
else if ( V-C <0)
{
cout << "T" << endl;
}
return 0;
cout << "F" << endl;
}
}
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