#include <stdio.h>
int main() {
int y, m, d;
scanf("%d %d %d", &y, &m, &d);
int y1, m1, d1;
scanf("%d %d %d", &y1, &m1, &d1);
if(y1>=y){//2022
if(m1>=m){//1
if(d1>=d){
printf("yes");
}
else
printf("yes");
}
else printf("yes");
}
else
printf("no");
return 0;
}

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