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#include <bits/stdc++.h>
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using namespace std;
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typedef long long ll;
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int main()
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{
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int T;
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ll n, k;
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scanf("%d", &T);
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while (T--)
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{
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scanf("%lld%lld", &n, &k);
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if (k == 1)
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printf("%lld\n", array<ll, 4>({n, 1, n + 1, 0})[n & 3]);
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else
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{
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}
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}
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return 0;
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} |
