fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t,n,k;
  6.     int a,b,c,d;
  7.     cin>>t;
  8.     while(t--){
  9.         cin>>n>>k;
  10.         a = n%k;
  11.         b = k/2;
  12.         if(a>b){
  13.         	a=a-b;
  14.             n = n-a;
  15.             cout<<n<<endl;
  16.         }
  17.         else{
  18.         cout<<n<<endl;
  19.         }
  20.     }
  21.     return 0;
  22. }
Success #stdin #stdout 0s 4300KB
comments (?)
stdin
copy 
6
5  2
19  4
12  7
6  2  
100000  50010
5  7
stdout
copy 
5
18
10
6
75015
3
https://ideone.com/5hMbH6
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!