#include <bits/stdc++.h>
using namespace std;
int main(){
    int L,M,N;
    cin>>L>>M>>N;
    int sum=(L*100+M*25+N)%1000;
    int ans=0;
    ans+=sum/100;
    sum=sum%100;
    ans+=sum/25;
    sum=sum%25;
    ans+=sum;
    cout<<ans<<endl;
    
}