E4 D bitop

/*
 Author: Cao Beijian
 Result: AC Submission_id: 4278576
 Created at: Tue Apr 05 2022 21:37:20 GMT+0800 (China Standard Time)
 Problem_id: 5477   Time: 4 Memory: 1616
*/

#include <stdio.h>
int main(){
    int n = 0, a, i, a03, j;
    scanf("%d", &a);
    a03 = a & 7;
    while(a){
        a >>= 3;
        n++;
    }
    for(i = 2; i >= 0; i--){
        if(a03 & (1 << i)){
            for(j = 0; j < 3 * n; j++){
                putchar('-');
            }
        }
        else{
            for(j = 0; j < n; j++){
                putchar('-');
            }
            for(j = 0; j < n; j++){
                putchar(' ');
            }
            for(j = 0; j < n; j++){
                putchar('-');
            }
        }
        putchar('\n');
    }
    return 0;
}