Submission #136660

#	Time	Username	Problem	Language	Result	Execution time	Memory
136660		KLPP	Strange Device (APIO19_strange_device)	C++14	10 / 100	5082 ms	524292 KiB

strange_device

#include<bits/stdc++.h>

using namespace std;
typedef long long int lld;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define trav(a,v) for(auto a:v)
lld GCD(lld x, lld y){
  if(y==0)return x;
  return GCD(y,x%y);
}

int main(){
  lld n,A,B;
  cin>>n>>A>>B;
  lld l[n];
  lld r[n];
  rep(i,0,n)cin>>l[i]>>r[i];
  lld D=GCD(A,B+1);
  set<pair<lld,lld> >s;
  rep(i,0,n){
    for(lld j=l[i];j<=r[i];j++){
      s.insert(pair<lld,lld>((j+(j/B))%A,j%B));
    }
  }
  cout<<s.size()<<endl;
  //trav(a,s)cout<<a.first<<" "<<a.second<<endl;
  return 0;
}

Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:18:7: warning: unused variable 'D' [-Wunused-variable]
   lld D=GCD(A,B+1);
       ^

• Subtask 1: 10 / 10
• Subtask 2: 0 / 5
• Subtask 3: 0 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30