2021-04-05

1098

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int k;
    while(scanf("%d", &k) == 1){
        k %= 65;
        for(int a = 0; a <= 64; a++){
                if((18+a*k)%65 == 0){
                printf("%d\n", a);
                break;
            }
            if(a == 64) printf("no\n");
        }
    }
    return 0;
}