#include <iostream>
using namespace std;
int main()
{
    int output;
    int amount[4];
    const int rankup[] = {25,4,10};
    for (int i = 2;i>=0;i--)cin >> amount[i];
       for (int i = 0; i<=2;i++){
         if (rankup[i]<=amount[i]){
             amount[i+1] += (amount[i]/rankup[i]);
             amount[i] = amount[i]%rankup[i];
         }
     }
    for (int i = 0; i<=2;i++){
        output+= amount[i];
    }
    cout << output << endl;

}