#include<iostream>

using std::cout;
using std::endl;

#include<iostream>

using std::cout;
using std::endl;

#include<iostream>

using std::cout;
using std::endl;

#include<vector>
#include<list>
#include<string>
#include<iostream>
#include<numeric>        //accumulate

<?php
echo array_reduce(array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10), create_function('$a,$b', 'return $a+$b;'));
echo array_reduce(array("a", "b", "c"), create_function('$a,$b', 'return $a.$b;'));
?>

#自分で書く必要はない
use List::Util qw/reduce/;
print reduce { $a + $b } (1 .. 10);
print reduce { $a . $b } ("a", "b", "c");

#自分で書く必要はない
p (1..10).inject(0){|a, b| a + b}
p ["a", "b", "c"].inject(""){|a, b| a + b}

# -*- coding: utf-8 -*-
#自分で書く必要はない
print reduce(lambda x, y: x + y, range(1, 11))
print reduce(lambda x, y: x + y, ["a", "b", "c"])

#include<iostream>
#include<list>
#include<string>

using namespace std;

#include<iostream>
#include<list>
#include<string>

using namespace std;

#ifndef HASH_H
#define HASH_H

#include<stdio.h>