#include <iostream>
using namespace std;
const int rate1=   1;
const int rate2=  25;
const int rate3= 100;
const int rate4=1000;

int main(void){
    int L,M,N;
    int t=0;
    int ans =0;
    
    cin >> L >> M >> N;
    
    M += rate1*L/rate2;
    ans += (rate1*L%rate2)/rate1;
    
    N += rate2*M/rate3;
    ans += (rate2*M%rate3)/rate2;

    
    t += rate3*N/rate4;
    ans += (rate3*N%rate4)/rate3;
    
    cout << ans << endl;
    
}