#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include <cmath>
#include <algorithm>
#include <vector>
#include <queue>
#include <stack>
#include <map>
#include <set>
#include <cstring>

typedef long long ll;
using namespace std;

#define mod 1000003
#define INF 10000000
#define LLINF 2000000000000000000LL

#define SIZE 10000

int main(){
    int l,m,n;
    
    scanf("%d%d%d",&l,&m,&n);
    
    m+=n/25;
    n%=25;
    l+=m/4;
    m%=4;
    l%=10;
    
    printf("%d\n",l+m+n);
    
    
    return 0;
}