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#include <iostream>

#include <vector>

#include <algorithm>

using namespace std;

class Solution {

public:

int findComplement(int num) {

unsigned int res = 2;

while (res <= num)

{

res *= 2;

}

return res-1-num;

}

};

int main()

{

Solution solution;

int res = solution.findComplement(2147483647);

cout << res << endl;

return 0;

}