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14 lines
198 B
C++
14 lines
198 B
C++
#include<bits/stdc++.h>
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using namespace std;
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int main() {
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int t, a, b;
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cin >> t;
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while(t--) {
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cin >> a >> b;
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cout << a + b - (a & b) * 2 << endl;
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}
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return 0;
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}
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