Hello everyone.
I recently entered the contest Codeforces Round 699 (Div. 2), specifically I did the exercise 1481A - Space Navigation , which asked me to read two integers qx, qy and finally a string character S. I use C ++ programming language to do this. I used the fflush(stdin) function to clear the count memory while doing this, specifically my main code at the time was:
vector <string> ans;
int main() {
int t, a, b;
string s;
cin >> t;
for (int i = 0; i < t; i++) {
cin >> a >> b;
fflush(stdin);
getline(cin, s);
ans.push_back(solve(a, b, s));
}
for (int i = 0; i < ans.size(); i++)
cout << ans[i] << endl;
}
The problem I have is that the codeforces system does not seem to be executing my fflush () function, while I am still able to run the correct program using my computer.
I have to fix my program to:
vector <string> ans;
int main() {
int t, a, b;
string s;
cin >> t;
for (int i = 0; i < t; i++) {
cin >> a >> b;
cin >> s;
ans.push_back(solve(a, b, s));
}
for (int i = 0; i < ans.size(); i++)
cout << ans[i] << endl;
}
With this program, the system accepted my program.
However, entering a string using the function std :: cin is not a good choice, if there is ' '(whitespace, # 32 ASCII) in the string then I don't really know how to read the data. :(
I write this article to ask you to share your experiences about the problem that I am facing to help my upcoming competitions go smoother.
Thank you for reading my article, good day.