baekjoon 1436

https://www.acmicpc.net/problem/1436

Idea

브루트포스 싫어...

Code

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <math.h>

int main(void) {
	int N, cnt = 0;
	int result = 665;

	scanf("%d", &N);

	while (cnt != N) {
		result++;

		for (int i = 0; i < 5; i++) {
			if (result / (int)pow(10, i) % 1000 == 666) {
				cnt++;
				break;
			}
		}
	}

	printf("%d", result);

	return 0;
}