use strict;
use warnings;
use v5.16;

# https://yukicoder.me/problems/5

# my $input = "7
# 20
# 10

# ";

my $L = <>;
my $M = <>;
my $N = <>;
chomp( $L, $M, $N );

my $sum = $L * 100 + $M * 25 + $N;

my $coins = $sum % 1000;

my $coin_100 = int( $coins / 100 );
my $coin_25  = int( ( $coins - $coin_100 * 100 ) / 25 );
my $coin_1   = int( ( $coins - ( $coin_100 * 100 ) - ( $coin_25 * 25 ) ) );

print $coin_100 + $coin_25 + $coin_1, "\n";