Secret Origins - bruteforce

#include <bits/stdc++.h>
#define wrench786 ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long
#define PI (acos(-1.0))
#define LIMIT 1000000000
#define pb push_back
#define dot(x) fixed<<setprecision(x)
using namespace std;

int BinOne(ll int n){
    int ans =0;
    while(n!=0){
        if(n&1) ans++;
        n>>=1;
    }
    return ans;
}

string solve(int n){
    string str;
    while(n!=0){
        if(n&1) str.pb('1');
        else str.pb('0');
        n>>=1;
    }
    reverse(str.begin(),str.end());
    return str;
}

int main(){
    wrench786

#ifndef ONLINE_JUDGE
    clock_t tStart = clock();
    freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout);
#endif
    int j;
    for(j=1;j<=32;j++){
        ll int n,i,ans1=0,ans2=0;
        ans1 = BinOne(j);
        for(i=j+1;;i++){
            ans2 = BinOne(i);
            if(ans1==ans2){
                string str1 = solve(j);
                string str2 = solve(i);
                cout<<j<<" = "<<str1<<" "<<str2<<" = "<<i<<endl;
                break;
            }
        }
    }

#ifndef ONLINE_JUDGE
    fprintf(stderr, "\n>> Runtime: %.10fs\n", (double) (clock() - tStart) / CLOCKS_PER_SEC);
#endif

}