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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long ll;
  4. const int Mod=998244353;
  5.  
  6. void solve() {
  7.     int l,r;
  8.     cin >> l >> r;
  9.     int ans = 0 ;
  10.     for(int i=l;i<=r;i++) if(i%2==1) ans++;
  11.     cout << ans/2 << '\n';
  12. }
  13.  
  14. int main(){ 
  15.     ios::sync_with_stdio(false);
  16.     cin.tie(nullptr);
  17.  
  18.     int t;
  19.     cin >> t;
  20.     while (t--) solve();
  21.  
  22.  
  23.     return 0;
  24. }
  25.  
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
copy 
8
1 3
3 7
10 21
2 8
51 60
2 15
10 26
1 1000
stdout
copy 
1
1
3
1
2
3
4
250
https://ideone.com/aX7PRT
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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