28 lines
543 B
C++
28 lines
543 B
C++
// Number Spiral
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#include<bits/stdc++.h>
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using namespace std;
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using ll = long long;
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int main() {
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int t; cin >> t;
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for (int i{}; i < t; i++) {
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ll x, y;
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cin >> y >> x;
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if (y >= x) {
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ll yy = y * (y-1) + 1;
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if (y & 1) yy -= (y - x);
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else yy += (y - x);
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cout << yy << endl;
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} else {
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ll xx = x * (x - 1) + 1;
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if (x & 1) xx += (x - y);
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else xx -= (x - y);
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cout << xx << endl;
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}
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}
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return 0;
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}
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