#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>

#define int ptrdiff_t
#define div lldiv
#define div_t lldiv_t
#define abs(a) ((a)<0?-(a):(a))
#define min(a,b) ((a)<(b)?(a):(b))

int N;
int conb(int n, int r) {
    int p = 1;
    int q = 0;
    while (r--)
        p=p*n--/++q;
    return p;
}

int check(int a, int rank) {
    int t = 0;
    if (a%2 == 0) return 0;
    while (rank--)
        if (a & (1ULL << rank))
            t++;
    return t%3 == 0;
}

void print(int a, int rank) {
    while (rank--)
        if (a & (1ULL << rank))
            putchar('5');
        else
            putchar('3');
    printf("\n");
}

main(void) {
    scanf("%td\n", &N);
    int rank = 3;
    for (rank = 3; ; rank++) {
        int t = 0;
        int nfive;
        for (nfive = 3; nfive <= rank; nfive+=3)
            t += conb(rank-1, nfive-1);
        if (t < N) {
            N-=t;
        } else {
            break;
        }
    }
    int a=0;
    do {
       if (check(a, rank))
           if (--N == 0)
               break;
       a++;
    } while(1);
    print(a, rank);
    return 0;
}