# include<iostearm>

using namespace std;

int main()
{
int t1, t2, t3;
cin >> t1 >> t2 >> t3;
if (t1 > t2) swap(t1, t2);
if (t2 > t3) swap(t2, t3);
if (t1 > t2) swap(t1, t2);
cout << (min(60, t2-t1) + min(60, t3-t2) + 60) << endl;
return 0;
}