26 lines
348 B
C++
26 lines
348 B
C++
#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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n=n-2;
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int f;
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if(n%x==0) f=n/x+1;
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else f=n/x+2;
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cout<<f<<endl;
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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--) solve();
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} |