#include<bits/stdc++.h>
#define ll long long int
#define repv(x,y) for(auto&x:(y))
#define rep(x,z,y) for(long long int x=(z);x<(y);x++)
using namespace std;



int main()
{
    ll L,M,N,ans=0;
    cin>>L>>M>>N;
    ans=N%25;
    M+=N/25;
    ans+=M%4;
    L+=M/4;
    ans+=L%10;
    cout<<ans<<endl;
    return 0;
}