[백준] 1436 영화감독 숌 (C언어)

#include <stdio.h>
 
int i, temp, check, cnt = 1;
int main(void)
{
    int series;
    scanf("%d", &series);
    if(series==1){
        printf("666");
        return 0;
    }
    for(i=667;; i++){
        temp = i;
        check = 0;
        while(temp){
            if(temp % 1000 == 666){
                check = 1;
            }
            temp /= 10;
        }
        if(check){
            cnt++;
            if(cnt == series){
                break;
            }
        }
    }
    printf("%d\n", i);
    return 0;
}