#include <stdio.h>

int main(void) {
int a,b,c;
int count=0;
scanf("%d %d %d",&a,&b,&c);
if(a>=80){
	count++;
}if(b>=80){
	count++;
}if(c>=80){
	count++;
}if(count>=2){
	printf("合格\n");
}else{
	printf("不合格\n");
	
}
	return 0;
}