Geeksforgeeks Solution For " Change Bits "

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Problem :- Change Bits

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Solution :- 

#include<bits/stdc++.h>
using namespace std;

int main() 
{
int t;
cin >> t;
while(t--)
{
    long long int n,m,p,c=0;
    cin >> m; 
    n = m;
    while(n)
    {
        n = n >> 1;
        c++;
    }

    p = (c == 0) ? 0 : (pow(2, c)-1);

    cout << (p-m) << " " << p << endl;
}
return 0;
}

Output:-