static void main_sink(){int data=_main_data;{int result=data * data;printIntLine(result);}}void _main(){int data;data=-1;fscanf (stdin, "%d", &data);_main_data=data;main_sink();}
static void main_sink(){int data=_main_data;{int result=data * data;printIntLine(result);}}static void main(){int data;data=-1;data=5;_main_data=data;main_sink();}