#include <iostream>
#include <vector>
#include <algorithm>
#define REP(i,n) for(int i=0;i<(n);++i)
#define SORT(a) sort((a).begin(),(a).end())
#define PB push_back
using namespace std;
typedef vector<int> VI;

int main(){
  int L, M, N;
  cin >> L >> M >> N;
  int m = L * 100 + M * 25 + N;
  int r = 0;
  r += (m % 1000) / 100;
  r += (m % 100) / 25;
  r += m % 25;
  cout << r << endl;
}