#include <stdio.h>
#define DEBUGe

#define NOP do{}while(0)

#ifdef DEBUG
#define TRACE(...) do{printf(__VA_ARGS__);fflush(stdout);}while(0)
#define TRACECR do{printf("\n");fflush(stdout);}while(0)
#else
#define TRACE(...) NOP
#define TRACECR NOP
#endif
int main( void ) {
    unsigned long    aa;
    unsigned long    wid = 3;
    unsigned long    stp = 3;
    unsigned long   val;

    scanf("%d", &aa );
    if( aa != 1 ) {
        printf("YES\n");
        return 0;
    }
#if 0
    while( (wid+stp) <= aa+aa ) {
        //TRACE("%d,",wid);
        if( (( aa - stp ) % wid) == 0 ) {
            val = ( aa - stp ) / wid;
            if( val > aa ) {
                printf("NO\n");
                return 0;
            }
            for( int i=0;i<wid;i++) {
                if(i) TRACE(" + ");
                TRACE("%ld",val+i);
            }
            TRACE("= %d\n",aa);
            printf("YES\n");
            return 0;
        }
        stp += wid;
        wid++;
    }
    TRACE("(wid+stp)=%ld, wid=%ld,stp=%ld,aa=%ld\n", wid+stp, wid, stp,aa);
#endif
    printf("NO\n");
    return 0;
}