#include <stdio.h>
int main() {
    int year,month,day;//规定计划
    int Cyear,Cmonth,Cday;//实行计划时
    scanf("%d %d %d",&year,&month,&day);
    scanf("%d %d %d",&Cyear,&Cmonth,&Cday);//这样总不能错了吧
    if(year <= Cyear && month <=Cmonth && day <=Cday)
        printf("yes");
    else if(year <= Cyear && month <= Cmonth)
        printf("yes");
    else if(year < Cyear)
        printf("yes");
    else 
        printf("no");
    return 0;
}