The issue seems to be caused by the line
output+='\0'
on line 48. Since the code prints a new line character with endl, the \0 is
redundant, causing that pesky WA error. I ran your code without adding the
\0 to the output, and it passed both test cases. Hope this helps!
Best,
Matt
On Monday, April 6, 2020 at 8:56:20 PM UTC-4, Avinash Bhardwaj wrote:
>
>
> I prepared several testcases and each one is passing as per the rules
> stated in the problem. But still I get WA: wrong answer. Could anyone point
> me out to a possible case where my solution fails? It'd be great help
>
> #include <iostream>
> #include <string>
> #include <deque>
> using namespace std;
>
> int main()
> {
> int T , N ;
> cin >> T ;
> for(int it = 1 ; it <= T ; ++it)
> {
> string input ;
> string output ;
> cin >> input ;
> int nc_open = 0 ;
> deque<char> tailstr ;
> for(auto digit : input)
> {
> int num = digit - '0' ;
> if(nc_open <= num)
> {
> int nc_add = num - nc_open ;
> string temp(nc_add, '(');
> temp += digit ;
> output += temp;
> for(int k = 0 ; k < nc_add ; ++k)
> {
> tailstr.push_back(')');
> }
> nc_open = num;
> }
> else
> {
> int extra_par = nc_open - num ;
> for(auto i = 1 ; i <= extra_par ; ++i)
> {
> output += tailstr.back();
> tailstr.pop_back();
> }
> nc_open = num ;
> output += digit ;
> }
> }
> for(auto ch: tailstr)
> output += ch ;
> output += '\0' ;
> cout << "Case #"<< it << ": " << output << endl;
> }
> return 0 ;
> }
>
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