#include <iostream>
using namespace std;
int main() {
int A, B, C;
cin >> A >> B >>C;
if(A > B and A > C){
cout << A;
}else if(B > A and B > C){
cout << B;
if(C > A and C > B){
cout << C;
}else if (A>= 727 or B >= 727 or C>=727){
cout << "Error";
}else{
}
}
return 0;
}
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