Problem:
Score : 100 points

Problem Statement

This contest, AtCoder Beginner Contest, is abbreviated as ABC.

When we refer to a specific round of ABC, a three-digit number is appended after ABC. For example, ABC680 is the 680th round of ABC.

What is the abbreviation for the N-th round of ABC? Write a program to output the answer.

Constraints

100 ≤ N ≤ 999

Input

Input is given from Standard Input in the following format:

N

Output

Print the abbreviation for the N-th round of ABC.

Sample Input 1

100

Sample Output 1

ABC100

The 100th round of ABC is ABC100.

Sample Input 2

425

Sample Output 2

ABC425

Sample Input 3

999

Sample Output 3

ABC999

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <iostream>
#include <vector>

#define _For(idx, from, to, inc, cmp) \
	for(auto idx=(from) ; idx cmp (to) ; inc idx)
#define For(idx, from, to) \
	_For(idx, from, to, ++, <)
using u64 = uint64_t;
using u64p = std::pair<u64, u64>;
using i64 = int64_t;
constexpr int NA = 50;
int main() {
	u64 n;
	std::cin >> n;

	const u64 div = n/NA;
	const u64 initial = (NA-1) + div;
	std::vector<u64> ret(NA, initial);
	n %= NA;
	For(i, 0, n) {
		ret[i] += NA;
		For(j, 0, NA) {
			if(j != i) {
				ret[j] -= 1;
			}
		}
	}
	std::cout << NA << std::endl;
	For(i, 0, NA) {
		if(i!=0)
			std::cout << ' ';
		std::cout << ret[i];
	}
	std::cout << std::endl;
	return 0;
}