#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;
}

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