Testing interactive problems' codes

→ Обратите внимание

До соревнования
Good Bye 2024: 2025 is NEAR
22:18:25
Зарегистрироваться »

*есть доп. регистрация

→ Лидеры (рейтинг)

№	Пользователь	Рейтинг
1	tourist	3985
2	jiangly	3814
3	jqdai0815	3682
4	Benq	3529
5	orzdevinwang	3526
6	ksun48	3517
7	Radewoosh	3410
8	hos.lyric	3399
9	ecnerwala	3392
9	Um_nik	3392

Страны | Города | Организации

Всё →

→ Лидеры (вклад)

№	Пользователь	Вклад
1	cry	170
2	Um_nik	162
3	maomao90	161
4	atcoder_official	160
5	djm03178	158
5	-is-this-fft-	158
7	adamant	154
7	Dominater069	154
9	awoo	152
9	luogu_official	152

Всё →

→ Найти пользователя

→ Прямой эфир

Детальнее →

Блог пользователя ldn694

Testing interactive problems' codes

Автор ldn694, история, 4 года назад, По-английски

Hello peoples of codeforces, I just want to ask a question. Recently, I found debugging interactive problems' code manually kinda frustrating. Take this problem as an example. Having to answer the code's queries on my own is really time-consuming and one mistake means typing all over again. But if we could have another code that can simply read the original code's queries and answering them automatically then it would be really useful and convenient, especially when participating in a contest. If the problem was non-interactive, I would simply use files for input and output, but interactive problems require simultaneous interaction between two codes, which makes the solution of using files failed. So I am curious to know how to implement that. I would be so appreciative if someone can provide me a template in C++. Thanks for reading and have a nice day.

ldn694
4 года назад
4

Комментарии (4)

Написать комментарий?

ldn694

4 года назад, # |

Auto comment: topic has been updated by ldn694 (previous revision, new revision, compare).

→ Ответить

Everule

4 года назад, # |

+15

I put all query functions in lambdas. I can easily modify it to return the value from some given data. For example

void solve(){
    int n;
    cin>>n;
    //vector<int> seq(n);
    //cin>>seq;
    auto query = [&](int i,int j){
        cout<<"? "<<i+1<<" "<<j+1<<endl;
        int ans;
        cin>>ans;
        //ans = (seq[i] | seq[j]);
        return ans;
    };
}

Its very easy to switch between local testing and submissions. You can also use #ifdefs, if you have to change a lot. It's perhaps not the best way to test, but I think it is simple enough.

→ Ответить

ldn694

4 года назад, # ^ |

I am looking for a code that can check the original code (the code I would submit). Then I could write a code to generate random tests and check the original one. For example the problem I mentioned in the blog. I want to have a code to simply generate random sequences, run the original code and interact with it, and check whether the sequence that the first code provides are the correct ones. If that is possible, I could automatically check the original one with a lot of random tests and fix the bugs if it gives an incorrect answer. I am sorry if the blog is easily to be misunderstood.

→ Ответить

Halit

4 года назад, # |

← Rev. 5 →

Code


	vector<int> ANSWER = {0,0,2,3};
	const int LIMIT = n+2;
	int NUMBER_OF_INTERACTIONS = 0;

        #ifndef DEBUG
		auto interaction = [&](string operation, int i, int j){
			cout << operation << ' ' << i << ' ' << j << endl;
			int res;
			cin >> res;
			return res;
		};

		auto guess = [&](vector<int> v){
			cout << '!';
			for(int e : v)
				cout << ' ' << e;
			cout << endl;
		};
	#else
		auto interaction = [&](string operation, int i, int j){
			cout << "INTERACTION: " << operation << ' ' << i << ' ' << j << endl;
                        

                        NUMBER_OF_INTERACTIONS++;
			if(NUMBER_OF_INTERACTIONS > LIMIT){
				cout << "WRONG ANSWER (INTERACTION LIMIT EXCEED)" << endl;
				exit(0);
			} 

			if(i < 1 || i > n || j < 1 || j > n){
				cout << "WRONG ANSWER (WRONG INTERACTION COMMAND)" << endl;
				exit(0);
			}

			if(operation == "AND"){
				cout << "ANSWER : " << (ANSWER[i-1] & ANSWER[j-1]) << endl;
				return ANSWER[i-1] & ANSWER[j-1];
			} else if(operation == "XOR"){
				cout << "ANSWER : " << (ANSWER[i-1] ^ ANSWER[j-1]) << endl;
				return ANSWER[i-1] ^ ANSWER[j-1];
			} else if(operation == "OR"){
				cout << "ANSWER : " << (ANSWER[i-1] | ANSWER[j-1]) << endl;
				return ANSWER[i-1] | ANSWER[j-1];
			} else{
				cout << "WRONG ANSWER (WRONG INTERACTION COMMAND)" << endl;
				exit(0);
			}
		};

		auto guess = [&](vector<int> v){
			cout << "INTERACTION(GUESS) : ";
			cout << '!';
			for(int e : v)
				cout << ' ' << e;
			cout << endl;

			bool flag = 1;
			if(v.size() != ANSWER.size()){
				cout << "WRONG ANSWER" << endl;
			} else{
				for(int i = 0;i < v.size();++i)
					flag &= v[i] == ANSWER[i];
				if(flag){
					cout << "CORRECT ANSWER" << endl;
				} else{
					cout << "WRONG ANSWER" << endl;
				}
			}
		};
	#endif

For this problem, you can write some code like this to check your code

→ Ответить

Соревнования по программированию 2.0

Время на сервере: 27.12.2024 19:16:36 (k2).

Десктопная версия, переключиться на мобильную.

При поддержке