import std.stdio;
import std.algorithm;
import std.string;
import std.conv;

void main()
{
    int l = readln.chomp.to!int;
    int m = readln.chomp.to!int;
    int n = readln.chomp.to!int;

exl:
    l %= 10;
exm:
    if (m >= 4) {
        l += m / 4;
        m %= 4;
        goto exl;
    }
    if (n >= 25) {
        m += n / 25;
        n %= 25;
        goto exm;
    }
    writeln(l + m + n);
}