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#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main(){
	while (1){
		cout<<"计算大冒险"<<endl<<"开始游戏（0）";
		int a;
		cin>>a;
		if (a==0){
			int sum;
			sum=0;
			double a,a_1,a_2,a_3,b,b_1,b_2,b_3,c,c_1,c_2,c_3,d,d_1,d_2,d_3;
			cout<<"开始游戏！";
			for (int i=1;i<=100;i++){
				cout<<endl;
			}
			while (1){
				srand(time(0));
				a=rand()%100+0;
				srand(time(0));
				a_1=rand()%99+0;
				cout<<a<<"+"<<a_1<<"=";
				cin>>a_3;
				if (a_3==a+a_1){
					cout<<"答对了！！！"<<endl;
		        	sum+=1;
				}
				else{
					cout<<"答错了。"<<endl;
					cout<<"答对了"<<sum<<"道题。"<<endl;
					break;
				}
				srand(time(0));
				b=rand()%200+100;
				srand(time(0));
				b_1=rand()%50+1;
				cout<<b<<"-"<<b_1<<"=";
				cin>>b_3;
				if (b_3==b-b_1){
					cout<<"答对了！！！"<<endl;
		        	sum+=1;
				}
				else{
					cout<<"答错了。"<<endl;
					cout<<"答对了"<<sum<<"道题。"<<endl;
					break;
				}
				srand(time(0));
				c=rand()%10+0;
				srand(time(0));
				c_1=rand()%9+1;
				cout<<b<<"x"<<b_1<<"=";
				cin>>c_3;
				if (c_3==c*c_1){
					cout<<"答对了！！！"<<endl;
		        	sum+=1;
				}
				else{
					cout<<"答错了。"<<endl;
					cout<<"答对了"<<sum<<"道题。"<<endl;
					break;
				}
				srand(time(0));
				d=rand()%1000+100;
				srand(time(0));
				d_1=rand()%50+40;
				cout<<b<<"/"<<b_1<<"=";
				cin>>d_3;
				if (d_3==d/d_1){
					cout<<"答对了！！！"<<endl;
		        	sum+=1;
				}
				else{
					cout<<"答错了。"<<endl;
					cout<<"答对了"<<sum<<"道题。"<<endl;
					break;
				}
			}
		}
	}
	return 0;
}