#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0; i < n; i++)
#define REPR(i, n) for(int i = n; i >= 0; i--)
#define FOR(i, m, n) for(int i = m; i < n; i++)
#define INF 2e9
#define ALL(v) v.begin(), v.end()
using namespace std;
typedef long long ll;
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n100, n25, n1;
    cin >> n100 >> n25 >> n1;
    
    int sum_yen = 100 * n100 + 25 * n25 + n1;
    int yen[4] = {1000, 100, 25, 1};

    int cnt = 0;
    for(int i = 0; i < 4; i++)
    {
        if(i > 0) cnt += (sum_yen / yen[i]);
        sum_yen = sum_yen - (sum_yen / yen[i])*yen[i];
    }
    cout << cnt << endl;
}