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Create problem17.cpp
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problem17.cpp

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/*
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Solved by Vignesh M
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Dept of CSE
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*/
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#include <iostream>
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#include <vector>
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using namespace std;
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int main()
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{
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vector <int> inputElements;
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int n, i, xor1 = 0, xor2 = 0, temp;
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cin >> n;
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for(i = 1; i <= n; i++)
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{
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cin >> temp;
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inputElements.push_back(temp);
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xor1 ^= i;
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xor2 ^= temp;
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}
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xor1 ^= (n + 1);
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cout << (xor1 ^ xor2);
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return 0;
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}

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