1. B2068:

上代码：

int n=0,s=0,fu=0,c[5]={0,0,0,0,0},he=0;
cin>>n;
for(int i=1;i<=n;i++){
	cin>>s;
	c[1]=s%10;
	c[2]=(s%100-s%10)/10;
	c[3]=(s%1000-s%100)/100;
	c[4]=s/1000;
	he=c[1]-c[2]-c[3]-c[4];
	if(he>0) fu++;
}
cout<<fu;
int fhgdg;cin>>fhgdg;
return 0;

}