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  1. #include<iostream>
  2. using namespace std;
  3. int main(){
  4. int N,K,m;
  5. cin>>N>>K;
  6. m=(N-1)/K;
  7. if((N-1)%K!=0&&m<0){
  8. m=-1;}
  9. cout<<m;
  10. return 0;}
Success #stdin #stdout 0s 4384KB
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https://ideone.com/P5k6lz
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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