process exited due to signal 6/11 c++ - c++

Question

I didn't have any problems with compiling my program, but I have a big one when I try to use a bot to check output data. It says: "process exited due to signal 6" or "process exited due to signal 11". I thought it was a matter of dynamic arrays (i have two in this program) but both are deleted at the end.
I would be very grateful for any tip!
#include <iostream>
using namespace std;
void input_data (int p_n, int **p_arr);
void output_data (int p_n, int **p_arr);
void check_salary(int p_n, int **p_arr);
int main()
{
int n;
cin >> n;
int** arr = new int*[n];
for(int i = 0; i < n; ++i){
arr[i] = new int[2];}
input_data(n, arr);
check_salary(n, arr);
output_data(n, arr);
for(int i=0; i<n; i++) {
delete [] arr[i];
}
delete[] arr;
return 0;
}
void check_salary(int p_n, int **p_arr)
{
bool fit, flag, exist;
int *used = new int(p_n);
int boss, salary, i_temp, i_salarless, min_sal ,i_used = 0,boss_salary, id;
for (int i=0; i<p_n; i++)
{
if(p_arr[i][1] != 0)
{
used[i_used]=p_arr[i][1];
i_used++;
}
}
do{
flag = false;
exist=false;
for (int i=0; i<p_n; i++)
{
i_salarless = 0;
id = i+1;
boss = p_arr[i][0];
salary=p_arr[i][1];
boss_salary = p_arr[boss-1][1];
if(salary==0)
{
if(boss==id){
p_arr[i][1] = p_n;
flag = true;
}else if(boss_salary>0){
for (int j=0; j<p_n; j++)
{
if (p_arr[j][0]==boss && p_arr[j][1] == 0){i_salarless++;}
}
if (i_salarless == 1){
do{
--boss_salary;
exist = false;
for (int i=0; i< i_used; i++){
{
if(boss_salary == used[i]){exist = true;}
}
}
}while(exist);
p_arr[i][1]= boss_salary;
used[i_used]= p_arr[i][1];
i_used++;
flag = true;
}
}
}else{}
}
} while(flag);
delete []used;
}
void output_data (int p_n, int **p_arr)
{
for (int i=0; i<p_n; i++)
{
cout<< p_arr[i][1] << "\n";
}
}
void input_data (int p_n, int **p_arr)
{
for (int i=0; i<p_n; i++)
{
for (int j=0; j<2; j++)
{
cin>> p_arr[i][j];
}
}
}

Answer 1

I think the main issue is that you are doing int *used = new int(p_n);, this will create a pointer to an integer that has initial value equal to p_n. But, the problem comes here: used[i_used]=p_arr[i][1]; -- this may lead to a segmentation fault, as you may end up using memory outside the valid bounds.
I'm not sure about the algorithm, but based on the code, I think you should use this instead:
used = new int[p_n]; // assuming p_n > 0