一道c加加问题求解急

#include <stdio.h>
int main()
{
    int i=0;
    int count = 0;
    int n;
    scanf("%d",&n);
    while(1)
    {
        i++;
        if(i%3==0 || i%10==3)
            continue;
        count++;
        if(count == n)
        {
            printf("%d\n",i);
            break;
        }
    }
    return 0;
}