#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("Yes");}else{puts("No");}
#define MAX_N 200005

int main() {
    int l, m, n;
    cin >> l >> m >> n;

    m += n / 25;
    n %= 25;
    l += m / 4;
    m %= 4;
    l %= 10;

    int ans = l + m + n;

    cout << ans << endl;
    return 0;
}