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21 lines
340 B
C++
21 lines
340 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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int t, x, y;
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int main() {
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cin >> t;
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while (t--) {
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cin >> x >> y;
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if (x > y) {
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cout << x + y << endl;
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} else if (x == y) {
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cout << x << endl;
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} else {
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cout << y - (y % x / 2) << endl;
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}
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}
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return 0;
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}
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