#include<bits/stdc++.h>
using namespace std;

const long long INF = 1LL << 60;
#define MOD 1000000007;

typedef long long ll;

#define writeln(n) cout<<n<<endl;
#define rep(i,n) for(int i=0; i<n; i++);

typedef pair<float, float> P;

typedef pair<string, int> Psi;

int main() {

	int l,m,s;
	cin>>l>>m>>s;

	int change =0;
	int sum =0;
	if(s >=25){
		change =s/25;
	}
	sum += s%25;

	if(m >=4){
			change =(m+change)/4;
		}
	sum += m%4;

	if(l+change >=10){
		l = (change+l)%10;
	}
	sum +=l;

	writeln(sum);

}