#include<stdio.h>
#define max(a,b) (a>b?a:b)
#define min(a,b) (a<b?a:b)
void dfs(long long int level, long long int l, long long int r);
char s1[5]="OuQ";
long long int len[55];
long long int k, l, r;
int main(void)
{
    int i;
    len[1]=3;
    for(i=2; i<=50; i++)
        len[i]=2*len[i-1]+3;
    while(scanf("%lld %lld %lld", &k, &l, &r)!=EOF)
    {
        dfs(k, l, r);
        printf("\n");
    }
    return 0;
}
void dfs(long long int level, long long int l, long long int r)
{
    int i;
    if(level==0)
        return;
    if(l==0)
        printf("O");
    if(l<len[level]/2 && r>0)
        dfs(level-1, max(0, l-1), min(r, len[level-1])-1);
    if(l<=len[level]/2 && len[level]/2<=r)
        printf("u");
    if(l<len[level]-1 && len[level]/2<r)
        dfs(level-1, max(0, l-len[level]/2-1), min(r-len[level]/2, len[level-1])-1);
    if(r==len[level]-1)
        printf("Q");
}