> #include<iostream>
> #include<vector>
> #include<string>
> using namespace std;
> 
> int main(){
> 	int i=0,j=0,sum=0;
> 	vector<string> sb(1000);
> 	vector<string> sf(1000);
> 	sb[0]="http://www.acm.org/";
> 	string a;
> 	while(cin >>a&&a!="QUIT"){
> 		if(a=="VISIT"){
> 			cin >>a;i++;
> 			sb[i]=a;
> 			sf[j]=a;j++;
> 			if(sum<=j) sum=j;
> 			cout <<a<<endl;
> 		}
> 		else if(a=="BACK"){
>             i--;j--;
> 			if(i<0) {cout<<"Ignored"<<endl;i=0;}
> 			else cout<<sb[i]<<endl;
> 		}
> 		else if(a=="FORWARD"){	
> 			if(j<0) j=0;
> 			if(j>=sum) {cout<<"Ignored"<<endl;j=sum;}
> 			else {i++;sb[i]=sf[j];j++;cout <<sb[i]<<endl;}
> 		}
> 	}
> 	return 0;
> }

• Re:没有道理啊,数据都过了,我用的VECTOR<STRING>怎么会不对 (635) earthquake 2008-04-12 17:14:11