33 lines
495 B
C++
33 lines
495 B
C++
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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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void solve()
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{
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int n, x;
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cin >> n >> x;
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if (n < 3)
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cout << "1" << endl;
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else
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{
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n = n - 2;
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int f;
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if (n % x == 0)
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f = n / x + 1;
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else
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f = n / x + 2;
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cout << f << endl;
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}
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}
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int main()
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{
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ios_base::sync_with_stdio(false);
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cin.tie(nullptr);
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int TC = 1;
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cin >> TC;
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cin.ignore();
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while (TC--)
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solve();
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}
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