#include <cstdio> in

#include <cstdio>
int n,id,x,s,f,g;
int main(){
for(scanf("%d",&n);n--;g|=f){
scanf("%d%d",&id,&x);
f=1;
while(x--){scanf("%d",&s);if(s>1899)f=0;}
if(f)printf("I AK %d\n",id);
}
if(!g)puts("GG");
}