#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define vi vector<int>
#define vll vector<ll>
#define vvi vector<vector<int> >
#define pii pair<int, int>
#define rep(i,n) for(int i = 0;i < n; i++)
#define Rep(i,n) for(int i = 1;i <= n; i++)

int main(){
    int a, b, c;
    cin >> a >> b >> c;
    b+=c/25;
    c%=25;
    a+=b/4;
    b%=4;
    cout << a%10 + b + c << endl;
    return 0;
}